Bug Summary

File:tools/clang/lib/Driver/Driver.cpp
Warning:line 1671, column 17
Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name Driver.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-eagerly-assume -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -mrelocation-model pic -pic-level 2 -mthread-model posix -relaxed-aliasing -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -momit-leaf-frame-pointer -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-7/lib/clang/7.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/lib/Driver -I /build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver -I /build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include -I /build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-7~svn329677/build-llvm/include -I /build/llvm-toolchain-snapshot-7~svn329677/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/x86_64-linux-gnu/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/x86_64-linux-gnu/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/backward -internal-isystem /usr/include/clang/7.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-7/lib/clang/7.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/lib/Driver -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-checker optin.performance.Padding -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2018-04-11-031539-24776-1 -x c++ /build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp
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/CommandLine.h"
66#include "llvm/Support/ErrorHandling.h"
67#include "llvm/Support/FileSystem.h"
68#include "llvm/Support/Path.h"
69#include "llvm/Support/PrettyStackTrace.h"
70#include "llvm/Support/Process.h"
71#include "llvm/Support/Program.h"
72#include "llvm/Support/TargetRegistry.h"
73#include "llvm/Support/raw_ostream.h"
74#include "llvm/Support/StringSaver.h"
75#include <map>
76#include <memory>
77#include <utility>
78#if LLVM_ON_UNIX1
79#include <unistd.h> // getpid
80#endif
81
82using namespace clang::driver;
83using namespace clang;
84using namespace llvm::opt;
85
86Driver::Driver(StringRef ClangExecutable, StringRef DefaultTargetTriple,
87 DiagnosticsEngine &Diags,
88 IntrusiveRefCntPtr<vfs::FileSystem> VFS)
89 : Opts(createDriverOptTable()), Diags(Diags), VFS(std::move(VFS)),
90 Mode(GCCMode), SaveTemps(SaveTempsNone), BitcodeEmbed(EmbedNone),
91 LTOMode(LTOK_None), ClangExecutable(ClangExecutable),
92 SysRoot(DEFAULT_SYSROOT""), DriverTitle("clang LLVM compiler"),
93 CCPrintOptionsFilename(nullptr), CCPrintHeadersFilename(nullptr),
94 CCLogDiagnosticsFilename(nullptr), CCCPrintBindings(false),
95 CCPrintOptions(false), CCPrintHeaders(false), CCLogDiagnostics(false),
96 CCGenDiagnostics(false), DefaultTargetTriple(DefaultTargetTriple),
97 CCCGenericGCCName(""), Saver(Alloc), CheckInputsExist(true),
98 CCCUsePCH(true), GenReproducer(false),
99 SuppressMissingInputWarning(false) {
100
101 // Provide a sane fallback if no VFS is specified.
102 if (!this->VFS)
103 this->VFS = vfs::getRealFileSystem();
104
105 Name = llvm::sys::path::filename(ClangExecutable);
106 Dir = llvm::sys::path::parent_path(ClangExecutable);
107 InstalledDir = Dir; // Provide a sensible default installed dir.
108
109#if defined(CLANG_CONFIG_FILE_SYSTEM_DIR)
110 SystemConfigDir = CLANG_CONFIG_FILE_SYSTEM_DIR;
111#endif
112#if defined(CLANG_CONFIG_FILE_USER_DIR)
113 UserConfigDir = CLANG_CONFIG_FILE_USER_DIR;
114#endif
115
116 // Compute the path to the resource directory.
117 StringRef ClangResourceDir(CLANG_RESOURCE_DIR"");
118 SmallString<128> P(Dir);
119 if (ClangResourceDir != "") {
120 llvm::sys::path::append(P, ClangResourceDir);
121 } else {
122 StringRef ClangLibdirSuffix(CLANG_LIBDIR_SUFFIX"");
123 P = llvm::sys::path::parent_path(Dir);
124 llvm::sys::path::append(P, Twine("lib") + ClangLibdirSuffix, "clang",
125 CLANG_VERSION_STRING"7.0.0");
126 }
127 ResourceDir = P.str();
128}
129
130void Driver::ParseDriverMode(StringRef ProgramName,
131 ArrayRef<const char *> Args) {
132 ClangNameParts = ToolChain::getTargetAndModeFromProgramName(ProgramName);
133 setDriverModeFromOption(ClangNameParts.DriverMode);
134
135 for (const char *ArgPtr : Args) {
136 // Ignore nullptrs, they are the response file's EOL markers.
137 if (ArgPtr == nullptr)
138 continue;
139 const StringRef Arg = ArgPtr;
140 setDriverModeFromOption(Arg);
141 }
142}
143
144void Driver::setDriverModeFromOption(StringRef Opt) {
145 const std::string OptName =
146 getOpts().getOption(options::OPT_driver_mode).getPrefixedName();
147 if (!Opt.startswith(OptName))
148 return;
149 StringRef Value = Opt.drop_front(OptName.size());
150
151 if (auto M = llvm::StringSwitch<llvm::Optional<DriverMode>>(Value)
152 .Case("gcc", GCCMode)
153 .Case("g++", GXXMode)
154 .Case("cpp", CPPMode)
155 .Case("cl", CLMode)
156 .Default(None))
157 Mode = *M;
158 else
159 Diag(diag::err_drv_unsupported_option_argument) << OptName << Value;
160}
161
162InputArgList Driver::ParseArgStrings(ArrayRef<const char *> ArgStrings,
163 bool &ContainsError) {
164 llvm::PrettyStackTraceString CrashInfo("Command line argument parsing");
165 ContainsError = false;
166
167 unsigned IncludedFlagsBitmask;
168 unsigned ExcludedFlagsBitmask;
169 std::tie(IncludedFlagsBitmask, ExcludedFlagsBitmask) =
170 getIncludeExcludeOptionFlagMasks();
171
172 unsigned MissingArgIndex, MissingArgCount;
173 InputArgList Args =
174 getOpts().ParseArgs(ArgStrings, MissingArgIndex, MissingArgCount,
175 IncludedFlagsBitmask, ExcludedFlagsBitmask);
176
177 // Check for missing argument error.
178 if (MissingArgCount) {
179 Diag(diag::err_drv_missing_argument)
180 << Args.getArgString(MissingArgIndex) << MissingArgCount;
181 ContainsError |=
182 Diags.getDiagnosticLevel(diag::err_drv_missing_argument,
183 SourceLocation()) > DiagnosticsEngine::Warning;
184 }
185
186 // Check for unsupported options.
187 for (const Arg *A : Args) {
188 if (A->getOption().hasFlag(options::Unsupported)) {
189 unsigned DiagID;
190 auto ArgString = A->getAsString(Args);
191 std::string Nearest;
192 if (getOpts().findNearest(
193 ArgString, Nearest, IncludedFlagsBitmask,
194 ExcludedFlagsBitmask | options::Unsupported) > 1) {
195 DiagID = diag::err_drv_unsupported_opt;
196 Diag(DiagID) << ArgString;
197 } else {
198 DiagID = diag::err_drv_unsupported_opt_with_suggestion;
199 Diag(DiagID) << ArgString << Nearest;
200 }
201 ContainsError |= Diags.getDiagnosticLevel(DiagID, SourceLocation()) >
202 DiagnosticsEngine::Warning;
203 continue;
204 }
205
206 // Warn about -mcpu= without an argument.
207 if (A->getOption().matches(options::OPT_mcpu_EQ) && A->containsValue("")) {
208 Diag(diag::warn_drv_empty_joined_argument) << A->getAsString(Args);
209 ContainsError |= Diags.getDiagnosticLevel(
210 diag::warn_drv_empty_joined_argument,
211 SourceLocation()) > DiagnosticsEngine::Warning;
212 }
213 }
214
215 for (const Arg *A : Args.filtered(options::OPT_UNKNOWN)) {
216 unsigned DiagID;
217 auto ArgString = A->getAsString(Args);
218 std::string Nearest;
219 if (getOpts().findNearest(
220 ArgString, Nearest, IncludedFlagsBitmask, ExcludedFlagsBitmask) > 1) {
221 DiagID = IsCLMode() ? diag::warn_drv_unknown_argument_clang_cl
222 : diag::err_drv_unknown_argument;
223 Diags.Report(DiagID) << ArgString;
224 } else {
225 DiagID = IsCLMode() ? diag::warn_drv_unknown_argument_clang_cl_with_suggestion
226 : diag::err_drv_unknown_argument_with_suggestion;
227 Diags.Report(DiagID) << ArgString << Nearest;
228 }
229 ContainsError |= Diags.getDiagnosticLevel(DiagID, SourceLocation()) >
230 DiagnosticsEngine::Warning;
231 }
232
233 return Args;
234}
235
236// Determine which compilation mode we are in. We look for options which
237// affect the phase, starting with the earliest phases, and record which
238// option we used to determine the final phase.
239phases::ID Driver::getFinalPhase(const DerivedArgList &DAL,
240 Arg **FinalPhaseArg) const {
241 Arg *PhaseArg = nullptr;
242 phases::ID FinalPhase;
243
244 // -{E,EP,P,M,MM} only run the preprocessor.
245 if (CCCIsCPP() || (PhaseArg = DAL.getLastArg(options::OPT_E)) ||
246 (PhaseArg = DAL.getLastArg(options::OPT__SLASH_EP)) ||
247 (PhaseArg = DAL.getLastArg(options::OPT_M, options::OPT_MM)) ||
248 (PhaseArg = DAL.getLastArg(options::OPT__SLASH_P))) {
249 FinalPhase = phases::Preprocess;
250
251 // --precompile only runs up to precompilation.
252 } else if ((PhaseArg = DAL.getLastArg(options::OPT__precompile))) {
253 FinalPhase = phases::Precompile;
254
255 // -{fsyntax-only,-analyze,emit-ast} only run up to the compiler.
256 } else if ((PhaseArg = DAL.getLastArg(options::OPT_fsyntax_only)) ||
257 (PhaseArg = DAL.getLastArg(options::OPT_module_file_info)) ||
258 (PhaseArg = DAL.getLastArg(options::OPT_verify_pch)) ||
259 (PhaseArg = DAL.getLastArg(options::OPT_rewrite_objc)) ||
260 (PhaseArg = DAL.getLastArg(options::OPT_rewrite_legacy_objc)) ||
261 (PhaseArg = DAL.getLastArg(options::OPT__migrate)) ||
262 (PhaseArg = DAL.getLastArg(options::OPT__analyze,
263 options::OPT__analyze_auto)) ||
264 (PhaseArg = DAL.getLastArg(options::OPT_emit_ast))) {
265 FinalPhase = phases::Compile;
266
267 // -S only runs up to the backend.
268 } else if ((PhaseArg = DAL.getLastArg(options::OPT_S))) {
269 FinalPhase = phases::Backend;
270
271 // -c compilation only runs up to the assembler.
272 } else if ((PhaseArg = DAL.getLastArg(options::OPT_c))) {
273 FinalPhase = phases::Assemble;
274
275 // Otherwise do everything.
276 } else
277 FinalPhase = phases::Link;
278
279 if (FinalPhaseArg)
280 *FinalPhaseArg = PhaseArg;
281
282 return FinalPhase;
283}
284
285static Arg *MakeInputArg(DerivedArgList &Args, OptTable &Opts,
286 StringRef Value) {
287 Arg *A = new Arg(Opts.getOption(options::OPT_INPUT), Value,
288 Args.getBaseArgs().MakeIndex(Value), Value.data());
289 Args.AddSynthesizedArg(A);
290 A->claim();
291 return A;
292}
293
294DerivedArgList *Driver::TranslateInputArgs(const InputArgList &Args) const {
295 DerivedArgList *DAL = new DerivedArgList(Args);
296
297 bool HasNostdlib = Args.hasArg(options::OPT_nostdlib);
298 bool HasNodefaultlib = Args.hasArg(options::OPT_nodefaultlibs);
299 for (Arg *A : Args) {
300 // Unfortunately, we have to parse some forwarding options (-Xassembler,
301 // -Xlinker, -Xpreprocessor) because we either integrate their functionality
302 // (assembler and preprocessor), or bypass a previous driver ('collect2').
303
304 // Rewrite linker options, to replace --no-demangle with a custom internal
305 // option.
306 if ((A->getOption().matches(options::OPT_Wl_COMMA) ||
307 A->getOption().matches(options::OPT_Xlinker)) &&
308 A->containsValue("--no-demangle")) {
309 // Add the rewritten no-demangle argument.
310 DAL->AddFlagArg(A, Opts->getOption(options::OPT_Z_Xlinker__no_demangle));
311
312 // Add the remaining values as Xlinker arguments.
313 for (StringRef Val : A->getValues())
314 if (Val != "--no-demangle")
315 DAL->AddSeparateArg(A, Opts->getOption(options::OPT_Xlinker), Val);
316
317 continue;
318 }
319
320 // Rewrite preprocessor options, to replace -Wp,-MD,FOO which is used by
321 // some build systems. We don't try to be complete here because we don't
322 // care to encourage this usage model.
323 if (A->getOption().matches(options::OPT_Wp_COMMA) &&
324 (A->getValue(0) == StringRef("-MD") ||
325 A->getValue(0) == StringRef("-MMD"))) {
326 // Rewrite to -MD/-MMD along with -MF.
327 if (A->getValue(0) == StringRef("-MD"))
328 DAL->AddFlagArg(A, Opts->getOption(options::OPT_MD));
329 else
330 DAL->AddFlagArg(A, Opts->getOption(options::OPT_MMD));
331 if (A->getNumValues() == 2)
332 DAL->AddSeparateArg(A, Opts->getOption(options::OPT_MF),
333 A->getValue(1));
334 continue;
335 }
336
337 // Rewrite reserved library names.
338 if (A->getOption().matches(options::OPT_l)) {
339 StringRef Value = A->getValue();
340
341 // Rewrite unless -nostdlib is present.
342 if (!HasNostdlib && !HasNodefaultlib && Value == "stdc++") {
343 DAL->AddFlagArg(A, Opts->getOption(options::OPT_Z_reserved_lib_stdcxx));
344 continue;
345 }
346
347 // Rewrite unconditionally.
348 if (Value == "cc_kext") {
349 DAL->AddFlagArg(A, Opts->getOption(options::OPT_Z_reserved_lib_cckext));
350 continue;
351 }
352 }
353
354 // Pick up inputs via the -- option.
355 if (A->getOption().matches(options::OPT__DASH_DASH)) {
356 A->claim();
357 for (StringRef Val : A->getValues())
358 DAL->append(MakeInputArg(*DAL, *Opts, Val));
359 continue;
360 }
361
362 DAL->append(A);
363 }
364
365 // Enforce -static if -miamcu is present.
366 if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false))
367 DAL->AddFlagArg(0, Opts->getOption(options::OPT_static));
368
369// Add a default value of -mlinker-version=, if one was given and the user
370// didn't specify one.
371#if defined(HOST_LINK_VERSION)
372 if (!Args.hasArg(options::OPT_mlinker_version_EQ) &&
373 strlen(HOST_LINK_VERSION) > 0) {
374 DAL->AddJoinedArg(0, Opts->getOption(options::OPT_mlinker_version_EQ),
375 HOST_LINK_VERSION);
376 DAL->getLastArg(options::OPT_mlinker_version_EQ)->claim();
377 }
378#endif
379
380 return DAL;
381}
382
383/// \brief Compute target triple from args.
384///
385/// This routine provides the logic to compute a target triple from various
386/// args passed to the driver and the default triple string.
387static llvm::Triple computeTargetTriple(const Driver &D,
388 StringRef DefaultTargetTriple,
389 const ArgList &Args,
390 StringRef DarwinArchName = "") {
391 // FIXME: Already done in Compilation *Driver::BuildCompilation
392 if (const Arg *A = Args.getLastArg(options::OPT_target))
393 DefaultTargetTriple = A->getValue();
394
395 llvm::Triple Target(llvm::Triple::normalize(DefaultTargetTriple));
396
397 // Handle Apple-specific options available here.
398 if (Target.isOSBinFormatMachO()) {
399 // If an explicit Darwin arch name is given, that trumps all.
400 if (!DarwinArchName.empty()) {
401 tools::darwin::setTripleTypeForMachOArchName(Target, DarwinArchName);
402 return Target;
403 }
404
405 // Handle the Darwin '-arch' flag.
406 if (Arg *A = Args.getLastArg(options::OPT_arch)) {
407 StringRef ArchName = A->getValue();
408 tools::darwin::setTripleTypeForMachOArchName(Target, ArchName);
409 }
410 }
411
412 // Handle pseudo-target flags '-mlittle-endian'/'-EL' and
413 // '-mbig-endian'/'-EB'.
414 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
415 options::OPT_mbig_endian)) {
416 if (A->getOption().matches(options::OPT_mlittle_endian)) {
417 llvm::Triple LE = Target.getLittleEndianArchVariant();
418 if (LE.getArch() != llvm::Triple::UnknownArch)
419 Target = std::move(LE);
420 } else {
421 llvm::Triple BE = Target.getBigEndianArchVariant();
422 if (BE.getArch() != llvm::Triple::UnknownArch)
423 Target = std::move(BE);
424 }
425 }
426
427 // Skip further flag support on OSes which don't support '-m32' or '-m64'.
428 if (Target.getArch() == llvm::Triple::tce ||
429 Target.getOS() == llvm::Triple::Minix)
430 return Target;
431
432 // Handle pseudo-target flags '-m64', '-mx32', '-m32' and '-m16'.
433 Arg *A = Args.getLastArg(options::OPT_m64, options::OPT_mx32,
434 options::OPT_m32, options::OPT_m16);
435 if (A) {
436 llvm::Triple::ArchType AT = llvm::Triple::UnknownArch;
437
438 if (A->getOption().matches(options::OPT_m64)) {
439 AT = Target.get64BitArchVariant().getArch();
440 if (Target.getEnvironment() == llvm::Triple::GNUX32)
441 Target.setEnvironment(llvm::Triple::GNU);
442 } else if (A->getOption().matches(options::OPT_mx32) &&
443 Target.get64BitArchVariant().getArch() == llvm::Triple::x86_64) {
444 AT = llvm::Triple::x86_64;
445 Target.setEnvironment(llvm::Triple::GNUX32);
446 } else if (A->getOption().matches(options::OPT_m32)) {
447 AT = Target.get32BitArchVariant().getArch();
448 if (Target.getEnvironment() == llvm::Triple::GNUX32)
449 Target.setEnvironment(llvm::Triple::GNU);
450 } else if (A->getOption().matches(options::OPT_m16) &&
451 Target.get32BitArchVariant().getArch() == llvm::Triple::x86) {
452 AT = llvm::Triple::x86;
453 Target.setEnvironment(llvm::Triple::CODE16);
454 }
455
456 if (AT != llvm::Triple::UnknownArch && AT != Target.getArch())
457 Target.setArch(AT);
458 }
459
460 // Handle -miamcu flag.
461 if (Args.hasFlag(options::OPT_miamcu, options::OPT_mno_iamcu, false)) {
462 if (Target.get32BitArchVariant().getArch() != llvm::Triple::x86)
463 D.Diag(diag::err_drv_unsupported_opt_for_target) << "-miamcu"
464 << Target.str();
465
466 if (A && !A->getOption().matches(options::OPT_m32))
467 D.Diag(diag::err_drv_argument_not_allowed_with)
468 << "-miamcu" << A->getBaseArg().getAsString(Args);
469
470 Target.setArch(llvm::Triple::x86);
471 Target.setArchName("i586");
472 Target.setEnvironment(llvm::Triple::UnknownEnvironment);
473 Target.setEnvironmentName("");
474 Target.setOS(llvm::Triple::ELFIAMCU);
475 Target.setVendor(llvm::Triple::UnknownVendor);
476 Target.setVendorName("intel");
477 }
478
479 return Target;
480}
481
482// \brief Parse the LTO options and record the type of LTO compilation
483// based on which -f(no-)?lto(=.*)? option occurs last.
484void Driver::setLTOMode(const llvm::opt::ArgList &Args) {
485 LTOMode = LTOK_None;
486 if (!Args.hasFlag(options::OPT_flto, options::OPT_flto_EQ,
487 options::OPT_fno_lto, false))
488 return;
489
490 StringRef LTOName("full");
491
492 const Arg *A = Args.getLastArg(options::OPT_flto_EQ);
493 if (A)
494 LTOName = A->getValue();
495
496 LTOMode = llvm::StringSwitch<LTOKind>(LTOName)
497 .Case("full", LTOK_Full)
498 .Case("thin", LTOK_Thin)
499 .Default(LTOK_Unknown);
500
501 if (LTOMode == LTOK_Unknown) {
502 assert(A)(static_cast <bool> (A) ? void (0) : __assert_fail ("A"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 502, __extension__ __PRETTY_FUNCTION__))
;
503 Diag(diag::err_drv_unsupported_option_argument) << A->getOption().getName()
504 << A->getValue();
505 }
506}
507
508/// Compute the desired OpenMP runtime from the flags provided.
509Driver::OpenMPRuntimeKind Driver::getOpenMPRuntime(const ArgList &Args) const {
510 StringRef RuntimeName(CLANG_DEFAULT_OPENMP_RUNTIME"libomp");
511
512 const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ);
513 if (A)
514 RuntimeName = A->getValue();
515
516 auto RT = llvm::StringSwitch<OpenMPRuntimeKind>(RuntimeName)
517 .Case("libomp", OMPRT_OMP)
518 .Case("libgomp", OMPRT_GOMP)
519 .Case("libiomp5", OMPRT_IOMP5)
520 .Default(OMPRT_Unknown);
521
522 if (RT == OMPRT_Unknown) {
523 if (A)
524 Diag(diag::err_drv_unsupported_option_argument)
525 << A->getOption().getName() << A->getValue();
526 else
527 // FIXME: We could use a nicer diagnostic here.
528 Diag(diag::err_drv_unsupported_opt) << "-fopenmp";
529 }
530
531 return RT;
532}
533
534void Driver::CreateOffloadingDeviceToolChains(Compilation &C,
535 InputList &Inputs) {
536
537 //
538 // CUDA
539 //
540 // We need to generate a CUDA toolchain if any of the inputs has a CUDA type.
541 if (llvm::any_of(Inputs, [](std::pair<types::ID, const llvm::opt::Arg *> &I) {
542 return types::isCuda(I.first);
543 })) {
544 const ToolChain *HostTC = C.getSingleOffloadToolChain<Action::OFK_Host>();
545 const llvm::Triple &HostTriple = HostTC->getTriple();
546 llvm::Triple CudaTriple(HostTriple.isArch64Bit() ? "nvptx64-nvidia-cuda"
547 : "nvptx-nvidia-cuda");
548 // Use the CUDA and host triples as the key into the ToolChains map, because
549 // the device toolchain we create depends on both.
550 auto &CudaTC = ToolChains[CudaTriple.str() + "/" + HostTriple.str()];
551 if (!CudaTC) {
552 CudaTC = llvm::make_unique<toolchains::CudaToolChain>(
553 *this, CudaTriple, *HostTC, C.getInputArgs(), Action::OFK_Cuda);
554 }
555 C.addOffloadDeviceToolChain(CudaTC.get(), Action::OFK_Cuda);
556 }
557
558 //
559 // OpenMP
560 //
561 // We need to generate an OpenMP toolchain if the user specified targets with
562 // the -fopenmp-targets option.
563 if (Arg *OpenMPTargets =
564 C.getInputArgs().getLastArg(options::OPT_fopenmp_targets_EQ)) {
565 if (OpenMPTargets->getNumValues()) {
566 // We expect that -fopenmp-targets is always used in conjunction with the
567 // option -fopenmp specifying a valid runtime with offloading support,
568 // i.e. libomp or libiomp.
569 bool HasValidOpenMPRuntime = C.getInputArgs().hasFlag(
570 options::OPT_fopenmp, options::OPT_fopenmp_EQ,
571 options::OPT_fno_openmp, false);
572 if (HasValidOpenMPRuntime) {
573 OpenMPRuntimeKind OpenMPKind = getOpenMPRuntime(C.getInputArgs());
574 HasValidOpenMPRuntime =
575 OpenMPKind == OMPRT_OMP || OpenMPKind == OMPRT_IOMP5;
576 }
577
578 if (HasValidOpenMPRuntime) {
579 llvm::StringMap<const char *> FoundNormalizedTriples;
580 for (const char *Val : OpenMPTargets->getValues()) {
581 llvm::Triple TT(Val);
582 std::string NormalizedName = TT.normalize();
583
584 // Make sure we don't have a duplicate triple.
585 auto Duplicate = FoundNormalizedTriples.find(NormalizedName);
586 if (Duplicate != FoundNormalizedTriples.end()) {
587 Diag(clang::diag::warn_drv_omp_offload_target_duplicate)
588 << Val << Duplicate->second;
589 continue;
590 }
591
592 // Store the current triple so that we can check for duplicates in the
593 // following iterations.
594 FoundNormalizedTriples[NormalizedName] = Val;
595
596 // If the specified target is invalid, emit a diagnostic.
597 if (TT.getArch() == llvm::Triple::UnknownArch)
598 Diag(clang::diag::err_drv_invalid_omp_target) << Val;
599 else {
600 const ToolChain *TC;
601 // CUDA toolchains have to be selected differently. They pair host
602 // and device in their implementation.
603 if (TT.isNVPTX()) {
604 const ToolChain *HostTC =
605 C.getSingleOffloadToolChain<Action::OFK_Host>();
606 assert(HostTC && "Host toolchain should be always defined.")(static_cast <bool> (HostTC && "Host toolchain should be always defined."
) ? void (0) : __assert_fail ("HostTC && \"Host toolchain should be always defined.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 606, __extension__ __PRETTY_FUNCTION__))
;
607 auto &CudaTC =
608 ToolChains[TT.str() + "/" + HostTC->getTriple().normalize()];
609 if (!CudaTC)
610 CudaTC = llvm::make_unique<toolchains::CudaToolChain>(
611 *this, TT, *HostTC, C.getInputArgs(), Action::OFK_OpenMP);
612 TC = CudaTC.get();
613 } else
614 TC = &getToolChain(C.getInputArgs(), TT);
615 C.addOffloadDeviceToolChain(TC, Action::OFK_OpenMP);
616 }
617 }
618 } else
619 Diag(clang::diag::err_drv_expecting_fopenmp_with_fopenmp_targets);
620 } else
621 Diag(clang::diag::warn_drv_empty_joined_argument)
622 << OpenMPTargets->getAsString(C.getInputArgs());
623 }
624
625 //
626 // TODO: Add support for other offloading programming models here.
627 //
628}
629
630/// Looks the given directories for the specified file.
631///
632/// \param[out] FilePath File path, if the file was found.
633/// \param[in] Dirs Directories used for the search.
634/// \param[in] FileName Name of the file to search for.
635/// \return True if file was found.
636///
637/// Looks for file specified by FileName sequentially in directories specified
638/// by Dirs.
639///
640static bool searchForFile(SmallVectorImpl<char> &FilePath,
641 ArrayRef<std::string> Dirs,
642 StringRef FileName) {
643 SmallString<128> WPath;
644 for (const StringRef &Dir : Dirs) {
645 if (Dir.empty())
646 continue;
647 WPath.clear();
648 llvm::sys::path::append(WPath, Dir, FileName);
649 llvm::sys::path::native(WPath);
650 if (llvm::sys::fs::is_regular_file(WPath)) {
651 FilePath = std::move(WPath);
652 return true;
653 }
654 }
655 return false;
656}
657
658bool Driver::readConfigFile(StringRef FileName) {
659 // Try reading the given file.
660 SmallVector<const char *, 32> NewCfgArgs;
661 if (!llvm::cl::readConfigFile(FileName, Saver, NewCfgArgs)) {
662 Diag(diag::err_drv_cannot_read_config_file) << FileName;
663 return true;
664 }
665
666 // Read options from config file.
667 llvm::SmallString<128> CfgFileName(FileName);
668 llvm::sys::path::native(CfgFileName);
669 ConfigFile = CfgFileName.str();
670 bool ContainErrors;
671 CfgOptions = llvm::make_unique<InputArgList>(
672 ParseArgStrings(NewCfgArgs, ContainErrors));
673 if (ContainErrors) {
674 CfgOptions.reset();
675 return true;
676 }
677
678 if (CfgOptions->hasArg(options::OPT_config)) {
679 CfgOptions.reset();
680 Diag(diag::err_drv_nested_config_file);
681 return true;
682 }
683
684 // Claim all arguments that come from a configuration file so that the driver
685 // does not warn on any that is unused.
686 for (Arg *A : *CfgOptions)
687 A->claim();
688 return false;
689}
690
691bool Driver::loadConfigFile() {
692 std::string CfgFileName;
693 bool FileSpecifiedExplicitly = false;
694
695 // Process options that change search path for config files.
696 if (CLOptions) {
697 if (CLOptions->hasArg(options::OPT_config_system_dir_EQ)) {
698 SmallString<128> CfgDir;
699 CfgDir.append(
700 CLOptions->getLastArgValue(options::OPT_config_system_dir_EQ));
701 if (!CfgDir.empty()) {
702 if (llvm::sys::fs::make_absolute(CfgDir).value() != 0)
703 SystemConfigDir.clear();
704 else
705 SystemConfigDir = std::string(CfgDir.begin(), CfgDir.end());
706 }
707 }
708 if (CLOptions->hasArg(options::OPT_config_user_dir_EQ)) {
709 SmallString<128> CfgDir;
710 CfgDir.append(
711 CLOptions->getLastArgValue(options::OPT_config_user_dir_EQ));
712 if (!CfgDir.empty()) {
713 if (llvm::sys::fs::make_absolute(CfgDir).value() != 0)
714 UserConfigDir.clear();
715 else
716 UserConfigDir = std::string(CfgDir.begin(), CfgDir.end());
717 }
718 }
719 }
720
721 // First try to find config file specified in command line.
722 if (CLOptions) {
723 std::vector<std::string> ConfigFiles =
724 CLOptions->getAllArgValues(options::OPT_config);
725 if (ConfigFiles.size() > 1) {
726 Diag(diag::err_drv_duplicate_config);
727 return true;
728 }
729
730 if (!ConfigFiles.empty()) {
731 CfgFileName = ConfigFiles.front();
732 assert(!CfgFileName.empty())(static_cast <bool> (!CfgFileName.empty()) ? void (0) :
__assert_fail ("!CfgFileName.empty()", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 732, __extension__ __PRETTY_FUNCTION__))
;
733
734 // If argument contains directory separator, treat it as a path to
735 // configuration file.
736 if (llvm::sys::path::has_parent_path(CfgFileName)) {
737 SmallString<128> CfgFilePath;
738 if (llvm::sys::path::is_relative(CfgFileName))
739 llvm::sys::fs::current_path(CfgFilePath);
740 llvm::sys::path::append(CfgFilePath, CfgFileName);
741 if (!llvm::sys::fs::is_regular_file(CfgFilePath)) {
742 Diag(diag::err_drv_config_file_not_exist) << CfgFilePath;
743 return true;
744 }
745 return readConfigFile(CfgFilePath);
746 }
747
748 FileSpecifiedExplicitly = true;
749 }
750 }
751
752 // If config file is not specified explicitly, try to deduce configuration
753 // from executable name. For instance, an executable 'armv7l-clang' will
754 // search for config file 'armv7l-clang.cfg'.
755 if (CfgFileName.empty() && !ClangNameParts.TargetPrefix.empty())
756 CfgFileName = ClangNameParts.TargetPrefix + '-' + ClangNameParts.ModeSuffix;
757
758 if (CfgFileName.empty())
759 return false;
760
761 // Determine architecture part of the file name, if it is present.
762 StringRef CfgFileArch = CfgFileName;
763 size_t ArchPrefixLen = CfgFileArch.find('-');
764 if (ArchPrefixLen == StringRef::npos)
765 ArchPrefixLen = CfgFileArch.size();
766 llvm::Triple CfgTriple;
767 CfgFileArch = CfgFileArch.take_front(ArchPrefixLen);
768 CfgTriple = llvm::Triple(llvm::Triple::normalize(CfgFileArch));
769 if (CfgTriple.getArch() == llvm::Triple::ArchType::UnknownArch)
770 ArchPrefixLen = 0;
771
772 if (!StringRef(CfgFileName).endswith(".cfg"))
773 CfgFileName += ".cfg";
774
775 // If config file starts with architecture name and command line options
776 // redefine architecture (with options like -m32 -LE etc), try finding new
777 // config file with that architecture.
778 SmallString<128> FixedConfigFile;
779 size_t FixedArchPrefixLen = 0;
780 if (ArchPrefixLen) {
781 // Get architecture name from config file name like 'i386.cfg' or
782 // 'armv7l-clang.cfg'.
783 // Check if command line options changes effective triple.
784 llvm::Triple EffectiveTriple = computeTargetTriple(*this,
785 CfgTriple.getTriple(), *CLOptions);
786 if (CfgTriple.getArch() != EffectiveTriple.getArch()) {
787 FixedConfigFile = EffectiveTriple.getArchName();
788 FixedArchPrefixLen = FixedConfigFile.size();
789 // Append the rest of original file name so that file name transforms
790 // like: i386-clang.cfg -> x86_64-clang.cfg.
791 if (ArchPrefixLen < CfgFileName.size())
792 FixedConfigFile += CfgFileName.substr(ArchPrefixLen);
793 }
794 }
795
796 // Prepare list of directories where config file is searched for.
797 SmallVector<std::string, 3> CfgFileSearchDirs;
798 CfgFileSearchDirs.push_back(UserConfigDir);
799 CfgFileSearchDirs.push_back(SystemConfigDir);
800 CfgFileSearchDirs.push_back(Dir);
801
802 // Try to find config file. First try file with corrected architecture.
803 llvm::SmallString<128> CfgFilePath;
804 if (!FixedConfigFile.empty()) {
805 if (searchForFile(CfgFilePath, CfgFileSearchDirs, FixedConfigFile))
806 return readConfigFile(CfgFilePath);
807 // If 'x86_64-clang.cfg' was not found, try 'x86_64.cfg'.
808 FixedConfigFile.resize(FixedArchPrefixLen);
809 FixedConfigFile.append(".cfg");
810 if (searchForFile(CfgFilePath, CfgFileSearchDirs, FixedConfigFile))
811 return readConfigFile(CfgFilePath);
812 }
813
814 // Then try original file name.
815 if (searchForFile(CfgFilePath, CfgFileSearchDirs, CfgFileName))
816 return readConfigFile(CfgFilePath);
817
818 // Finally try removing driver mode part: 'x86_64-clang.cfg' -> 'x86_64.cfg'.
819 if (!ClangNameParts.ModeSuffix.empty() &&
820 !ClangNameParts.TargetPrefix.empty()) {
821 CfgFileName.assign(ClangNameParts.TargetPrefix);
822 CfgFileName.append(".cfg");
823 if (searchForFile(CfgFilePath, CfgFileSearchDirs, CfgFileName))
824 return readConfigFile(CfgFilePath);
825 }
826
827 // Report error but only if config file was specified explicitly, by option
828 // --config. If it was deduced from executable name, it is not an error.
829 if (FileSpecifiedExplicitly) {
830 Diag(diag::err_drv_config_file_not_found) << CfgFileName;
831 for (const std::string &SearchDir : CfgFileSearchDirs)
832 if (!SearchDir.empty())
833 Diag(diag::note_drv_config_file_searched_in) << SearchDir;
834 return true;
835 }
836
837 return false;
838}
839
840Compilation *Driver::BuildCompilation(ArrayRef<const char *> ArgList) {
841 llvm::PrettyStackTraceString CrashInfo("Compilation construction");
842
843 // FIXME: Handle environment options which affect driver behavior, somewhere
844 // (client?). GCC_EXEC_PREFIX, LPATH, CC_PRINT_OPTIONS.
845
846 if (Optional<std::string> CompilerPathValue =
847 llvm::sys::Process::GetEnv("COMPILER_PATH")) {
848 StringRef CompilerPath = *CompilerPathValue;
849 while (!CompilerPath.empty()) {
850 std::pair<StringRef, StringRef> Split =
851 CompilerPath.split(llvm::sys::EnvPathSeparator);
852 PrefixDirs.push_back(Split.first);
853 CompilerPath = Split.second;
854 }
855 }
856
857 // We look for the driver mode option early, because the mode can affect
858 // how other options are parsed.
859 ParseDriverMode(ClangExecutable, ArgList.slice(1));
860
861 // FIXME: What are we going to do with -V and -b?
862
863 // Arguments specified in command line.
864 bool ContainsError;
865 CLOptions = llvm::make_unique<InputArgList>(
866 ParseArgStrings(ArgList.slice(1), ContainsError));
867
868 // Try parsing configuration file.
869 if (!ContainsError)
870 ContainsError = loadConfigFile();
871 bool HasConfigFile = !ContainsError && (CfgOptions.get() != nullptr);
872
873 // All arguments, from both config file and command line.
874 InputArgList Args = std::move(HasConfigFile ? std::move(*CfgOptions)
875 : std::move(*CLOptions));
876 if (HasConfigFile)
877 for (auto *Opt : *CLOptions) {
878 const Arg *BaseArg = &Opt->getBaseArg();
879 if (BaseArg == Opt)
880 BaseArg = nullptr;
881 Arg *Copy = new llvm::opt::Arg(Opt->getOption(), Opt->getSpelling(),
882 Args.size(), BaseArg);
883 Copy->getValues() = Opt->getValues();
884 if (Opt->isClaimed())
885 Copy->claim();
886 Args.append(Copy);
887 }
888
889 // FIXME: This stuff needs to go into the Compilation, not the driver.
890 bool CCCPrintPhases;
891
892 // Silence driver warnings if requested
893 Diags.setIgnoreAllWarnings(Args.hasArg(options::OPT_w));
894
895 // -no-canonical-prefixes is used very early in main.
896 Args.ClaimAllArgs(options::OPT_no_canonical_prefixes);
897
898 // Ignore -pipe.
899 Args.ClaimAllArgs(options::OPT_pipe);
900
901 // Extract -ccc args.
902 //
903 // FIXME: We need to figure out where this behavior should live. Most of it
904 // should be outside in the client; the parts that aren't should have proper
905 // options, either by introducing new ones or by overloading gcc ones like -V
906 // or -b.
907 CCCPrintPhases = Args.hasArg(options::OPT_ccc_print_phases);
908 CCCPrintBindings = Args.hasArg(options::OPT_ccc_print_bindings);
909 if (const Arg *A = Args.getLastArg(options::OPT_ccc_gcc_name))
910 CCCGenericGCCName = A->getValue();
911 CCCUsePCH =
912 Args.hasFlag(options::OPT_ccc_pch_is_pch, options::OPT_ccc_pch_is_pth);
913 GenReproducer = Args.hasFlag(options::OPT_gen_reproducer,
914 options::OPT_fno_crash_diagnostics,
915 !!::getenv("FORCE_CLANG_DIAGNOSTICS_CRASH"));
916 // FIXME: DefaultTargetTriple is used by the target-prefixed calls to as/ld
917 // and getToolChain is const.
918 if (IsCLMode()) {
919 // clang-cl targets MSVC-style Win32.
920 llvm::Triple T(DefaultTargetTriple);
921 T.setOS(llvm::Triple::Win32);
922 T.setVendor(llvm::Triple::PC);
923 T.setEnvironment(llvm::Triple::MSVC);
924 T.setObjectFormat(llvm::Triple::COFF);
925 DefaultTargetTriple = T.str();
926 }
927 if (const Arg *A = Args.getLastArg(options::OPT_target))
928 DefaultTargetTriple = A->getValue();
929 if (const Arg *A = Args.getLastArg(options::OPT_ccc_install_dir))
930 Dir = InstalledDir = A->getValue();
931 for (const Arg *A : Args.filtered(options::OPT_B)) {
932 A->claim();
933 PrefixDirs.push_back(A->getValue(0));
934 }
935 if (const Arg *A = Args.getLastArg(options::OPT__sysroot_EQ))
936 SysRoot = A->getValue();
937 if (const Arg *A = Args.getLastArg(options::OPT__dyld_prefix_EQ))
938 DyldPrefix = A->getValue();
939
940 if (const Arg *A = Args.getLastArg(options::OPT_resource_dir))
941 ResourceDir = A->getValue();
942
943 if (const Arg *A = Args.getLastArg(options::OPT_save_temps_EQ)) {
944 SaveTemps = llvm::StringSwitch<SaveTempsMode>(A->getValue())
945 .Case("cwd", SaveTempsCwd)
946 .Case("obj", SaveTempsObj)
947 .Default(SaveTempsCwd);
948 }
949
950 setLTOMode(Args);
951
952 // Process -fembed-bitcode= flags.
953 if (Arg *A = Args.getLastArg(options::OPT_fembed_bitcode_EQ)) {
954 StringRef Name = A->getValue();
955 unsigned Model = llvm::StringSwitch<unsigned>(Name)
956 .Case("off", EmbedNone)
957 .Case("all", EmbedBitcode)
958 .Case("bitcode", EmbedBitcode)
959 .Case("marker", EmbedMarker)
960 .Default(~0U);
961 if (Model == ~0U) {
962 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
963 << Name;
964 } else
965 BitcodeEmbed = static_cast<BitcodeEmbedMode>(Model);
966 }
967
968 std::unique_ptr<llvm::opt::InputArgList> UArgs =
969 llvm::make_unique<InputArgList>(std::move(Args));
970
971 // Perform the default argument translations.
972 DerivedArgList *TranslatedArgs = TranslateInputArgs(*UArgs);
973
974 // Owned by the host.
975 const ToolChain &TC = getToolChain(
976 *UArgs, computeTargetTriple(*this, DefaultTargetTriple, *UArgs));
977
978 // The compilation takes ownership of Args.
979 Compilation *C = new Compilation(*this, TC, UArgs.release(), TranslatedArgs,
980 ContainsError);
981
982 if (!HandleImmediateArgs(*C))
983 return C;
984
985 // Construct the list of inputs.
986 InputList Inputs;
987 BuildInputs(C->getDefaultToolChain(), *TranslatedArgs, Inputs);
988
989 // Populate the tool chains for the offloading devices, if any.
990 CreateOffloadingDeviceToolChains(*C, Inputs);
991
992 // Construct the list of abstract actions to perform for this compilation. On
993 // MachO targets this uses the driver-driver and universal actions.
994 if (TC.getTriple().isOSBinFormatMachO())
995 BuildUniversalActions(*C, C->getDefaultToolChain(), Inputs);
996 else
997 BuildActions(*C, C->getArgs(), Inputs, C->getActions());
998
999 if (CCCPrintPhases) {
1000 PrintActions(*C);
1001 return C;
1002 }
1003
1004 BuildJobs(*C);
1005
1006 return C;
1007}
1008
1009static void printArgList(raw_ostream &OS, const llvm::opt::ArgList &Args) {
1010 llvm::opt::ArgStringList ASL;
1011 for (const auto *A : Args)
1012 A->render(Args, ASL);
1013
1014 for (auto I = ASL.begin(), E = ASL.end(); I != E; ++I) {
1015 if (I != ASL.begin())
1016 OS << ' ';
1017 Command::printArg(OS, *I, true);
1018 }
1019 OS << '\n';
1020}
1021
1022bool Driver::getCrashDiagnosticFile(StringRef ReproCrashFilename,
1023 SmallString<128> &CrashDiagDir) {
1024 using namespace llvm::sys;
1025 assert(llvm::Triple(llvm::sys::getProcessTriple()).isOSDarwin() &&(static_cast <bool> (llvm::Triple(llvm::sys::getProcessTriple
()).isOSDarwin() && "Only knows about .crash files on Darwin"
) ? void (0) : __assert_fail ("llvm::Triple(llvm::sys::getProcessTriple()).isOSDarwin() && \"Only knows about .crash files on Darwin\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 1026, __extension__ __PRETTY_FUNCTION__))
1026 "Only knows about .crash files on Darwin")(static_cast <bool> (llvm::Triple(llvm::sys::getProcessTriple
()).isOSDarwin() && "Only knows about .crash files on Darwin"
) ? void (0) : __assert_fail ("llvm::Triple(llvm::sys::getProcessTriple()).isOSDarwin() && \"Only knows about .crash files on Darwin\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 1026, __extension__ __PRETTY_FUNCTION__))
;
1027
1028 // The .crash file can be found on at ~/Library/Logs/DiagnosticReports/
1029 // (or /Library/Logs/DiagnosticReports for root) and has the filename pattern
1030 // clang-<VERSION>_<YYYY-MM-DD-HHMMSS>_<hostname>.crash.
1031 path::home_directory(CrashDiagDir);
1032 if (CrashDiagDir.startswith("/var/root"))
1033 CrashDiagDir = "/";
1034 path::append(CrashDiagDir, "Library/Logs/DiagnosticReports");
1035 int PID =
1036#if LLVM_ON_UNIX1
1037 getpid();
1038#else
1039 0;
1040#endif
1041 std::error_code EC;
1042 fs::file_status FileStatus;
1043 TimePoint<> LastAccessTime;
1044 SmallString<128> CrashFilePath;
1045 // Lookup the .crash files and get the one generated by a subprocess spawned
1046 // by this driver invocation.
1047 for (fs::directory_iterator File(CrashDiagDir, EC), FileEnd;
1048 File != FileEnd && !EC; File.increment(EC)) {
1049 StringRef FileName = path::filename(File->path());
1050 if (!FileName.startswith(Name))
1051 continue;
1052 if (fs::status(File->path(), FileStatus))
1053 continue;
1054 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> CrashFile =
1055 llvm::MemoryBuffer::getFile(File->path());
1056 if (!CrashFile)
1057 continue;
1058 // The first line should start with "Process:", otherwise this isn't a real
1059 // .crash file.
1060 StringRef Data = CrashFile.get()->getBuffer();
1061 if (!Data.startswith("Process:"))
1062 continue;
1063 // Parse parent process pid line, e.g: "Parent Process: clang-4.0 [79141]"
1064 size_t ParentProcPos = Data.find("Parent Process:");
1065 if (ParentProcPos == StringRef::npos)
1066 continue;
1067 size_t LineEnd = Data.find_first_of("\n", ParentProcPos);
1068 if (LineEnd == StringRef::npos)
1069 continue;
1070 StringRef ParentProcess = Data.slice(ParentProcPos+15, LineEnd).trim();
1071 int OpenBracket = -1, CloseBracket = -1;
1072 for (size_t i = 0, e = ParentProcess.size(); i < e; ++i) {
1073 if (ParentProcess[i] == '[')
1074 OpenBracket = i;
1075 if (ParentProcess[i] == ']')
1076 CloseBracket = i;
1077 }
1078 // Extract the parent process PID from the .crash file and check whether
1079 // it matches this driver invocation pid.
1080 int CrashPID;
1081 if (OpenBracket < 0 || CloseBracket < 0 ||
1082 ParentProcess.slice(OpenBracket + 1, CloseBracket)
1083 .getAsInteger(10, CrashPID) || CrashPID != PID) {
1084 continue;
1085 }
1086
1087 // Found a .crash file matching the driver pid. To avoid getting an older
1088 // and misleading crash file, continue looking for the most recent.
1089 // FIXME: the driver can dispatch multiple cc1 invocations, leading to
1090 // multiple crashes poiting to the same parent process. Since the driver
1091 // does not collect pid information for the dispatched invocation there's
1092 // currently no way to distinguish among them.
1093 const auto FileAccessTime = FileStatus.getLastModificationTime();
1094 if (FileAccessTime > LastAccessTime) {
1095 CrashFilePath.assign(File->path());
1096 LastAccessTime = FileAccessTime;
1097 }
1098 }
1099
1100 // If found, copy it over to the location of other reproducer files.
1101 if (!CrashFilePath.empty()) {
1102 EC = fs::copy_file(CrashFilePath, ReproCrashFilename);
1103 if (EC)
1104 return false;
1105 return true;
1106 }
1107
1108 return false;
1109}
1110
1111// When clang crashes, produce diagnostic information including the fully
1112// preprocessed source file(s). Request that the developer attach the
1113// diagnostic information to a bug report.
1114void Driver::generateCompilationDiagnostics(
1115 Compilation &C, const Command &FailingCommand,
1116 StringRef AdditionalInformation, CompilationDiagnosticReport *Report) {
1117 if (C.getArgs().hasArg(options::OPT_fno_crash_diagnostics))
1118 return;
1119
1120 // Don't try to generate diagnostics for link or dsymutil jobs.
1121 if (FailingCommand.getCreator().isLinkJob() ||
1122 FailingCommand.getCreator().isDsymutilJob())
1123 return;
1124
1125 // Print the version of the compiler.
1126 PrintVersion(C, llvm::errs());
1127
1128 Diag(clang::diag::note_drv_command_failed_diag_msg)
1129 << "PLEASE submit a bug report to " BUG_REPORT_URL"https://bugs.llvm.org/" " and include the "
1130 "crash backtrace, preprocessed source, and associated run script.";
1131
1132 // Suppress driver output and emit preprocessor output to temp file.
1133 Mode = CPPMode;
1134 CCGenDiagnostics = true;
1135
1136 // Save the original job command(s).
1137 Command Cmd = FailingCommand;
1138
1139 // Keep track of whether we produce any errors while trying to produce
1140 // preprocessed sources.
1141 DiagnosticErrorTrap Trap(Diags);
1142
1143 // Suppress tool output.
1144 C.initCompilationForDiagnostics();
1145
1146 // Construct the list of inputs.
1147 InputList Inputs;
1148 BuildInputs(C.getDefaultToolChain(), C.getArgs(), Inputs);
1149
1150 for (InputList::iterator it = Inputs.begin(), ie = Inputs.end(); it != ie;) {
1151 bool IgnoreInput = false;
1152
1153 // Ignore input from stdin or any inputs that cannot be preprocessed.
1154 // Check type first as not all linker inputs have a value.
1155 if (types::getPreprocessedType(it->first) == types::TY_INVALID) {
1156 IgnoreInput = true;
1157 } else if (!strcmp(it->second->getValue(), "-")) {
1158 Diag(clang::diag::note_drv_command_failed_diag_msg)
1159 << "Error generating preprocessed source(s) - "
1160 "ignoring input from stdin.";
1161 IgnoreInput = true;
1162 }
1163
1164 if (IgnoreInput) {
1165 it = Inputs.erase(it);
1166 ie = Inputs.end();
1167 } else {
1168 ++it;
1169 }
1170 }
1171
1172 if (Inputs.empty()) {
1173 Diag(clang::diag::note_drv_command_failed_diag_msg)
1174 << "Error generating preprocessed source(s) - "
1175 "no preprocessable inputs.";
1176 return;
1177 }
1178
1179 // Don't attempt to generate preprocessed files if multiple -arch options are
1180 // used, unless they're all duplicates.
1181 llvm::StringSet<> ArchNames;
1182 for (const Arg *A : C.getArgs()) {
1183 if (A->getOption().matches(options::OPT_arch)) {
1184 StringRef ArchName = A->getValue();
1185 ArchNames.insert(ArchName);
1186 }
1187 }
1188 if (ArchNames.size() > 1) {
1189 Diag(clang::diag::note_drv_command_failed_diag_msg)
1190 << "Error generating preprocessed source(s) - cannot generate "
1191 "preprocessed source with multiple -arch options.";
1192 return;
1193 }
1194
1195 // Construct the list of abstract actions to perform for this compilation. On
1196 // Darwin OSes this uses the driver-driver and builds universal actions.
1197 const ToolChain &TC = C.getDefaultToolChain();
1198 if (TC.getTriple().isOSBinFormatMachO())
1199 BuildUniversalActions(C, TC, Inputs);
1200 else
1201 BuildActions(C, C.getArgs(), Inputs, C.getActions());
1202
1203 BuildJobs(C);
1204
1205 // If there were errors building the compilation, quit now.
1206 if (Trap.hasErrorOccurred()) {
1207 Diag(clang::diag::note_drv_command_failed_diag_msg)
1208 << "Error generating preprocessed source(s).";
1209 return;
1210 }
1211
1212 // Generate preprocessed output.
1213 SmallVector<std::pair<int, const Command *>, 4> FailingCommands;
1214 C.ExecuteJobs(C.getJobs(), FailingCommands);
1215
1216 // If any of the preprocessing commands failed, clean up and exit.
1217 if (!FailingCommands.empty()) {
1218 if (!isSaveTempsEnabled())
1219 C.CleanupFileList(C.getTempFiles(), true);
1220
1221 Diag(clang::diag::note_drv_command_failed_diag_msg)
1222 << "Error generating preprocessed source(s).";
1223 return;
1224 }
1225
1226 const ArgStringList &TempFiles = C.getTempFiles();
1227 if (TempFiles.empty()) {
1228 Diag(clang::diag::note_drv_command_failed_diag_msg)
1229 << "Error generating preprocessed source(s).";
1230 return;
1231 }
1232
1233 Diag(clang::diag::note_drv_command_failed_diag_msg)
1234 << "\n********************\n\n"
1235 "PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\n"
1236 "Preprocessed source(s) and associated run script(s) are located at:";
1237
1238 SmallString<128> VFS;
1239 SmallString<128> ReproCrashFilename;
1240 for (const char *TempFile : TempFiles) {
1241 Diag(clang::diag::note_drv_command_failed_diag_msg) << TempFile;
1242 if (Report)
1243 Report->TemporaryFiles.push_back(TempFile);
1244 if (ReproCrashFilename.empty()) {
1245 ReproCrashFilename = TempFile;
1246 llvm::sys::path::replace_extension(ReproCrashFilename, ".crash");
1247 }
1248 if (StringRef(TempFile).endswith(".cache")) {
1249 // In some cases (modules) we'll dump extra data to help with reproducing
1250 // the crash into a directory next to the output.
1251 VFS = llvm::sys::path::filename(TempFile);
1252 llvm::sys::path::append(VFS, "vfs", "vfs.yaml");
1253 }
1254 }
1255
1256 // Assume associated files are based off of the first temporary file.
1257 CrashReportInfo CrashInfo(TempFiles[0], VFS);
1258
1259 std::string Script = CrashInfo.Filename.rsplit('.').first.str() + ".sh";
1260 std::error_code EC;
1261 llvm::raw_fd_ostream ScriptOS(Script, EC, llvm::sys::fs::F_Excl);
1262 if (EC) {
1263 Diag(clang::diag::note_drv_command_failed_diag_msg)
1264 << "Error generating run script: " + Script + " " + EC.message();
1265 } else {
1266 ScriptOS << "# Crash reproducer for " << getClangFullVersion() << "\n"
1267 << "# Driver args: ";
1268 printArgList(ScriptOS, C.getInputArgs());
1269 ScriptOS << "# Original command: ";
1270 Cmd.Print(ScriptOS, "\n", /*Quote=*/true);
1271 Cmd.Print(ScriptOS, "\n", /*Quote=*/true, &CrashInfo);
1272 if (!AdditionalInformation.empty())
1273 ScriptOS << "\n# Additional information: " << AdditionalInformation
1274 << "\n";
1275 if (Report)
1276 Report->TemporaryFiles.push_back(Script);
1277 Diag(clang::diag::note_drv_command_failed_diag_msg) << Script;
1278 }
1279
1280 // On darwin, provide information about the .crash diagnostic report.
1281 if (llvm::Triple(llvm::sys::getProcessTriple()).isOSDarwin()) {
1282 SmallString<128> CrashDiagDir;
1283 if (getCrashDiagnosticFile(ReproCrashFilename, CrashDiagDir)) {
1284 Diag(clang::diag::note_drv_command_failed_diag_msg)
1285 << ReproCrashFilename.str();
1286 } else { // Suggest a directory for the user to look for .crash files.
1287 llvm::sys::path::append(CrashDiagDir, Name);
1288 CrashDiagDir += "_<YYYY-MM-DD-HHMMSS>_<hostname>.crash";
1289 Diag(clang::diag::note_drv_command_failed_diag_msg)
1290 << "Crash backtrace is located in";
1291 Diag(clang::diag::note_drv_command_failed_diag_msg)
1292 << CrashDiagDir.str();
1293 Diag(clang::diag::note_drv_command_failed_diag_msg)
1294 << "(choose the .crash file that corresponds to your crash)";
1295 }
1296 }
1297
1298 for (const auto &A : C.getArgs().filtered(options::OPT_frewrite_map_file,
1299 options::OPT_frewrite_map_file_EQ))
1300 Diag(clang::diag::note_drv_command_failed_diag_msg) << A->getValue();
1301
1302 Diag(clang::diag::note_drv_command_failed_diag_msg)
1303 << "\n\n********************";
1304}
1305
1306void Driver::setUpResponseFiles(Compilation &C, Command &Cmd) {
1307 // Since commandLineFitsWithinSystemLimits() may underestimate system's capacity
1308 // if the tool does not support response files, there is a chance/ that things
1309 // will just work without a response file, so we silently just skip it.
1310 if (Cmd.getCreator().getResponseFilesSupport() == Tool::RF_None ||
1311 llvm::sys::commandLineFitsWithinSystemLimits(Cmd.getExecutable(), Cmd.getArguments()))
1312 return;
1313
1314 std::string TmpName = GetTemporaryPath("response", "txt");
1315 Cmd.setResponseFile(C.addTempFile(C.getArgs().MakeArgString(TmpName)));
1316}
1317
1318int Driver::ExecuteCompilation(
1319 Compilation &C,
1320 SmallVectorImpl<std::pair<int, const Command *>> &FailingCommands) {
1321 // Just print if -### was present.
1322 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
1323 C.getJobs().Print(llvm::errs(), "\n", true);
1324 return 0;
1325 }
1326
1327 // If there were errors building the compilation, quit now.
1328 if (Diags.hasErrorOccurred())
1329 return 1;
1330
1331 // Set up response file names for each command, if necessary
1332 for (auto &Job : C.getJobs())
1333 setUpResponseFiles(C, Job);
1334
1335 C.ExecuteJobs(C.getJobs(), FailingCommands);
1336
1337 // Remove temp files.
1338 C.CleanupFileList(C.getTempFiles());
1339
1340 // If the command succeeded, we are done.
1341 if (FailingCommands.empty())
1342 return 0;
1343
1344 // Otherwise, remove result files and print extra information about abnormal
1345 // failures.
1346 for (const auto &CmdPair : FailingCommands) {
1347 int Res = CmdPair.first;
1348 const Command *FailingCommand = CmdPair.second;
1349
1350 // Remove result files if we're not saving temps.
1351 if (!isSaveTempsEnabled()) {
1352 const JobAction *JA = cast<JobAction>(&FailingCommand->getSource());
1353 C.CleanupFileMap(C.getResultFiles(), JA, true);
1354
1355 // Failure result files are valid unless we crashed.
1356 if (Res < 0)
1357 C.CleanupFileMap(C.getFailureResultFiles(), JA, true);
1358 }
1359
1360 // Print extra information about abnormal failures, if possible.
1361 //
1362 // This is ad-hoc, but we don't want to be excessively noisy. If the result
1363 // status was 1, assume the command failed normally. In particular, if it
1364 // was the compiler then assume it gave a reasonable error code. Failures
1365 // in other tools are less common, and they generally have worse
1366 // diagnostics, so always print the diagnostic there.
1367 const Tool &FailingTool = FailingCommand->getCreator();
1368
1369 if (!FailingCommand->getCreator().hasGoodDiagnostics() || Res != 1) {
1370 // FIXME: See FIXME above regarding result code interpretation.
1371 if (Res < 0)
1372 Diag(clang::diag::err_drv_command_signalled)
1373 << FailingTool.getShortName();
1374 else
1375 Diag(clang::diag::err_drv_command_failed) << FailingTool.getShortName()
1376 << Res;
1377 }
1378 }
1379 return 0;
1380}
1381
1382void Driver::PrintHelp(bool ShowHidden) const {
1383 unsigned IncludedFlagsBitmask;
1384 unsigned ExcludedFlagsBitmask;
1385 std::tie(IncludedFlagsBitmask, ExcludedFlagsBitmask) =
1386 getIncludeExcludeOptionFlagMasks();
1387
1388 ExcludedFlagsBitmask |= options::NoDriverOption;
1389 if (!ShowHidden)
1390 ExcludedFlagsBitmask |= HelpHidden;
1391
1392 getOpts().PrintHelp(llvm::outs(), Name.c_str(), DriverTitle.c_str(),
1393 IncludedFlagsBitmask, ExcludedFlagsBitmask,
1394 /*ShowAllAliases=*/false);
1395}
1396
1397void Driver::PrintVersion(const Compilation &C, raw_ostream &OS) const {
1398 // FIXME: The following handlers should use a callback mechanism, we don't
1399 // know what the client would like to do.
1400 OS << getClangFullVersion() << '\n';
1401 const ToolChain &TC = C.getDefaultToolChain();
1402 OS << "Target: " << TC.getTripleString() << '\n';
1403
1404 // Print the threading model.
1405 if (Arg *A = C.getArgs().getLastArg(options::OPT_mthread_model)) {
1406 // Don't print if the ToolChain would have barfed on it already
1407 if (TC.isThreadModelSupported(A->getValue()))
1408 OS << "Thread model: " << A->getValue();
1409 } else
1410 OS << "Thread model: " << TC.getThreadModel();
1411 OS << '\n';
1412
1413 // Print out the install directory.
1414 OS << "InstalledDir: " << InstalledDir << '\n';
1415
1416 // If configuration file was used, print its path.
1417 if (!ConfigFile.empty())
1418 OS << "Configuration file: " << ConfigFile << '\n';
1419}
1420
1421/// PrintDiagnosticCategories - Implement the --print-diagnostic-categories
1422/// option.
1423static void PrintDiagnosticCategories(raw_ostream &OS) {
1424 // Skip the empty category.
1425 for (unsigned i = 1, max = DiagnosticIDs::getNumberOfCategories(); i != max;
1426 ++i)
1427 OS << i << ',' << DiagnosticIDs::getCategoryNameFromID(i) << '\n';
1428}
1429
1430void Driver::HandleAutocompletions(StringRef PassedFlags) const {
1431 if (PassedFlags == "")
1432 return;
1433 // Print out all options that start with a given argument. This is used for
1434 // shell autocompletion.
1435 std::vector<std::string> SuggestedCompletions;
1436 std::vector<std::string> Flags;
1437
1438 unsigned short DisableFlags =
1439 options::NoDriverOption | options::Unsupported | options::Ignored;
1440
1441 // Parse PassedFlags by "," as all the command-line flags are passed to this
1442 // function separated by ","
1443 StringRef TargetFlags = PassedFlags;
1444 while (TargetFlags != "") {
1445 StringRef CurFlag;
1446 std::tie(CurFlag, TargetFlags) = TargetFlags.split(",");
1447 Flags.push_back(std::string(CurFlag));
1448 }
1449
1450 // We want to show cc1-only options only when clang is invoked with -cc1 or
1451 // -Xclang.
1452 if (std::find(Flags.begin(), Flags.end(), "-Xclang") != Flags.end() ||
1453 std::find(Flags.begin(), Flags.end(), "-cc1") != Flags.end())
1454 DisableFlags &= ~options::NoDriverOption;
1455
1456 StringRef Cur;
1457 Cur = Flags.at(Flags.size() - 1);
1458 StringRef Prev;
1459 if (Flags.size() >= 2) {
1460 Prev = Flags.at(Flags.size() - 2);
1461 SuggestedCompletions = Opts->suggestValueCompletions(Prev, Cur);
1462 }
1463
1464 if (SuggestedCompletions.empty())
1465 SuggestedCompletions = Opts->suggestValueCompletions(Cur, "");
1466
1467 if (SuggestedCompletions.empty()) {
1468 // If the flag is in the form of "--autocomplete=-foo",
1469 // we were requested to print out all option names that start with "-foo".
1470 // For example, "--autocomplete=-fsyn" is expanded to "-fsyntax-only".
1471 SuggestedCompletions = Opts->findByPrefix(Cur, DisableFlags);
1472
1473 // We have to query the -W flags manually as they're not in the OptTable.
1474 // TODO: Find a good way to add them to OptTable instead and them remove
1475 // this code.
1476 for (StringRef S : DiagnosticIDs::getDiagnosticFlags())
1477 if (S.startswith(Cur))
1478 SuggestedCompletions.push_back(S);
1479 }
1480
1481 // Sort the autocomplete candidates so that shells print them out in a
1482 // deterministic order. We could sort in any way, but we chose
1483 // case-insensitive sorting for consistency with the -help option
1484 // which prints out options in the case-insensitive alphabetical order.
1485 llvm::sort(SuggestedCompletions.begin(), SuggestedCompletions.end(),
1486 [](StringRef A, StringRef B) {
1487 if (int X = A.compare_lower(B))
1488 return X < 0;
1489 return A.compare(B) > 0;
1490 });
1491
1492 llvm::outs() << llvm::join(SuggestedCompletions, "\n") << '\n';
1493}
1494
1495bool Driver::HandleImmediateArgs(const Compilation &C) {
1496 // The order these options are handled in gcc is all over the place, but we
1497 // don't expect inconsistencies w.r.t. that to matter in practice.
1498
1499 if (C.getArgs().hasArg(options::OPT_dumpmachine)) {
1500 llvm::outs() << C.getDefaultToolChain().getTripleString() << '\n';
1501 return false;
1502 }
1503
1504 if (C.getArgs().hasArg(options::OPT_dumpversion)) {
1505 // Since -dumpversion is only implemented for pedantic GCC compatibility, we
1506 // return an answer which matches our definition of __VERSION__.
1507 //
1508 // If we want to return a more correct answer some day, then we should
1509 // introduce a non-pedantically GCC compatible mode to Clang in which we
1510 // provide sensible definitions for -dumpversion, __VERSION__, etc.
1511 llvm::outs() << "4.2.1\n";
1512 return false;
1513 }
1514
1515 if (C.getArgs().hasArg(options::OPT__print_diagnostic_categories)) {
1516 PrintDiagnosticCategories(llvm::outs());
1517 return false;
1518 }
1519
1520 if (C.getArgs().hasArg(options::OPT_help) ||
1521 C.getArgs().hasArg(options::OPT__help_hidden)) {
1522 PrintHelp(C.getArgs().hasArg(options::OPT__help_hidden));
1523 return false;
1524 }
1525
1526 if (C.getArgs().hasArg(options::OPT__version)) {
1527 // Follow gcc behavior and use stdout for --version and stderr for -v.
1528 PrintVersion(C, llvm::outs());
1529 return false;
1530 }
1531
1532 if (C.getArgs().hasArg(options::OPT_v) ||
1533 C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
1534 PrintVersion(C, llvm::errs());
1535 SuppressMissingInputWarning = true;
1536 }
1537
1538 if (C.getArgs().hasArg(options::OPT_v)) {
1539 if (!SystemConfigDir.empty())
1540 llvm::errs() << "System configuration file directory: "
1541 << SystemConfigDir << "\n";
1542 if (!UserConfigDir.empty())
1543 llvm::errs() << "User configuration file directory: "
1544 << UserConfigDir << "\n";
1545 }
1546
1547 const ToolChain &TC = C.getDefaultToolChain();
1548
1549 if (C.getArgs().hasArg(options::OPT_v))
1550 TC.printVerboseInfo(llvm::errs());
1551
1552 if (C.getArgs().hasArg(options::OPT_print_resource_dir)) {
1553 llvm::outs() << ResourceDir << '\n';
1554 return false;
1555 }
1556
1557 if (C.getArgs().hasArg(options::OPT_print_search_dirs)) {
1558 llvm::outs() << "programs: =";
1559 bool separator = false;
1560 for (const std::string &Path : TC.getProgramPaths()) {
1561 if (separator)
1562 llvm::outs() << ':';
1563 llvm::outs() << Path;
1564 separator = true;
1565 }
1566 llvm::outs() << "\n";
1567 llvm::outs() << "libraries: =" << ResourceDir;
1568
1569 StringRef sysroot = C.getSysRoot();
1570
1571 for (const std::string &Path : TC.getFilePaths()) {
1572 // Always print a separator. ResourceDir was the first item shown.
1573 llvm::outs() << ':';
1574 // Interpretation of leading '=' is needed only for NetBSD.
1575 if (Path[0] == '=')
1576 llvm::outs() << sysroot << Path.substr(1);
1577 else
1578 llvm::outs() << Path;
1579 }
1580 llvm::outs() << "\n";
1581 return false;
1582 }
1583
1584 // FIXME: The following handlers should use a callback mechanism, we don't
1585 // know what the client would like to do.
1586 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_file_name_EQ)) {
1587 llvm::outs() << GetFilePath(A->getValue(), TC) << "\n";
1588 return false;
1589 }
1590
1591 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_prog_name_EQ)) {
1592 llvm::outs() << GetProgramPath(A->getValue(), TC) << "\n";
1593 return false;
1594 }
1595
1596 if (Arg *A = C.getArgs().getLastArg(options::OPT_autocomplete)) {
1597 StringRef PassedFlags = A->getValue();
1598 HandleAutocompletions(PassedFlags);
1599 return false;
1600 }
1601
1602 if (C.getArgs().hasArg(options::OPT_print_libgcc_file_name)) {
1603 ToolChain::RuntimeLibType RLT = TC.GetRuntimeLibType(C.getArgs());
1604 const llvm::Triple Triple(TC.ComputeEffectiveClangTriple(C.getArgs()));
1605 RegisterEffectiveTriple TripleRAII(TC, Triple);
1606 switch (RLT) {
1607 case ToolChain::RLT_CompilerRT:
1608 llvm::outs() << TC.getCompilerRT(C.getArgs(), "builtins") << "\n";
1609 break;
1610 case ToolChain::RLT_Libgcc:
1611 llvm::outs() << GetFilePath("libgcc.a", TC) << "\n";
1612 break;
1613 }
1614 return false;
1615 }
1616
1617 if (C.getArgs().hasArg(options::OPT_print_multi_lib)) {
1618 for (const Multilib &Multilib : TC.getMultilibs())
1619 llvm::outs() << Multilib << "\n";
1620 return false;
1621 }
1622
1623 if (C.getArgs().hasArg(options::OPT_print_multi_directory)) {
1624 for (const Multilib &Multilib : TC.getMultilibs()) {
1625 if (Multilib.gccSuffix().empty())
1626 llvm::outs() << ".\n";
1627 else {
1628 StringRef Suffix(Multilib.gccSuffix());
1629 assert(Suffix.front() == '/')(static_cast <bool> (Suffix.front() == '/') ? void (0) :
__assert_fail ("Suffix.front() == '/'", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 1629, __extension__ __PRETTY_FUNCTION__))
;
1630 llvm::outs() << Suffix.substr(1) << "\n";
1631 }
1632 }
1633 return false;
1634 }
1635 return true;
1636}
1637
1638// Display an action graph human-readably. Action A is the "sink" node
1639// and latest-occuring action. Traversal is in pre-order, visiting the
1640// inputs to each action before printing the action itself.
1641static unsigned PrintActions1(const Compilation &C, Action *A,
1642 std::map<Action *, unsigned> &Ids) {
1643 if (Ids.count(A)) // A was already visited.
1644 return Ids[A];
1645
1646 std::string str;
1647 llvm::raw_string_ostream os(str);
1648
1649 os << Action::getClassName(A->getKind()) << ", ";
1650 if (InputAction *IA = dyn_cast<InputAction>(A)) {
1651 os << "\"" << IA->getInputArg().getValue() << "\"";
1652 } else if (BindArchAction *BIA = dyn_cast<BindArchAction>(A)) {
1653 os << '"' << BIA->getArchName() << '"' << ", {"
1654 << PrintActions1(C, *BIA->input_begin(), Ids) << "}";
1655 } else if (OffloadAction *OA = dyn_cast<OffloadAction>(A)) {
1656 bool IsFirst = true;
1657 OA->doOnEachDependence(
1658 [&](Action *A, const ToolChain *TC, const char *BoundArch) {
1659 // E.g. for two CUDA device dependences whose bound arch is sm_20 and
1660 // sm_35 this will generate:
1661 // "cuda-device" (nvptx64-nvidia-cuda:sm_20) {#ID}, "cuda-device"
1662 // (nvptx64-nvidia-cuda:sm_35) {#ID}
1663 if (!IsFirst)
1
Assuming 'IsFirst' is not equal to 0
2
Taking false branch
1664 os << ", ";
1665 os << '"';
1666 if (TC)
3
Assuming 'TC' is null
4
Taking false branch
1667 os << A->getOffloadingKindPrefix();
1668 else
1669 os << "host";
1670 os << " (";
1671 os << TC->getTriple().normalize();
5
Called C++ object pointer is null
1672
1673 if (BoundArch)
1674 os << ":" << BoundArch;
1675 os << ")";
1676 os << '"';
1677 os << " {" << PrintActions1(C, A, Ids) << "}";
1678 IsFirst = false;
1679 });
1680 } else {
1681 const ActionList *AL = &A->getInputs();
1682
1683 if (AL->size()) {
1684 const char *Prefix = "{";
1685 for (Action *PreRequisite : *AL) {
1686 os << Prefix << PrintActions1(C, PreRequisite, Ids);
1687 Prefix = ", ";
1688 }
1689 os << "}";
1690 } else
1691 os << "{}";
1692 }
1693
1694 // Append offload info for all options other than the offloading action
1695 // itself (e.g. (cuda-device, sm_20) or (cuda-host)).
1696 std::string offload_str;
1697 llvm::raw_string_ostream offload_os(offload_str);
1698 if (!isa<OffloadAction>(A)) {
1699 auto S = A->getOffloadingKindPrefix();
1700 if (!S.empty()) {
1701 offload_os << ", (" << S;
1702 if (A->getOffloadingArch())
1703 offload_os << ", " << A->getOffloadingArch();
1704 offload_os << ")";
1705 }
1706 }
1707
1708 unsigned Id = Ids.size();
1709 Ids[A] = Id;
1710 llvm::errs() << Id << ": " << os.str() << ", "
1711 << types::getTypeName(A->getType()) << offload_os.str() << "\n";
1712
1713 return Id;
1714}
1715
1716// Print the action graphs in a compilation C.
1717// For example "clang -c file1.c file2.c" is composed of two subgraphs.
1718void Driver::PrintActions(const Compilation &C) const {
1719 std::map<Action *, unsigned> Ids;
1720 for (Action *A : C.getActions())
1721 PrintActions1(C, A, Ids);
1722}
1723
1724/// \brief Check whether the given input tree contains any compilation or
1725/// assembly actions.
1726static bool ContainsCompileOrAssembleAction(const Action *A) {
1727 if (isa<CompileJobAction>(A) || isa<BackendJobAction>(A) ||
1728 isa<AssembleJobAction>(A))
1729 return true;
1730
1731 for (const Action *Input : A->inputs())
1732 if (ContainsCompileOrAssembleAction(Input))
1733 return true;
1734
1735 return false;
1736}
1737
1738void Driver::BuildUniversalActions(Compilation &C, const ToolChain &TC,
1739 const InputList &BAInputs) const {
1740 DerivedArgList &Args = C.getArgs();
1741 ActionList &Actions = C.getActions();
1742 llvm::PrettyStackTraceString CrashInfo("Building universal build actions");
1743 // Collect the list of architectures. Duplicates are allowed, but should only
1744 // be handled once (in the order seen).
1745 llvm::StringSet<> ArchNames;
1746 SmallVector<const char *, 4> Archs;
1747 for (Arg *A : Args) {
1748 if (A->getOption().matches(options::OPT_arch)) {
1749 // Validate the option here; we don't save the type here because its
1750 // particular spelling may participate in other driver choices.
1751 llvm::Triple::ArchType Arch =
1752 tools::darwin::getArchTypeForMachOArchName(A->getValue());
1753 if (Arch == llvm::Triple::UnknownArch) {
1754 Diag(clang::diag::err_drv_invalid_arch_name) << A->getAsString(Args);
1755 continue;
1756 }
1757
1758 A->claim();
1759 if (ArchNames.insert(A->getValue()).second)
1760 Archs.push_back(A->getValue());
1761 }
1762 }
1763
1764 // When there is no explicit arch for this platform, make sure we still bind
1765 // the architecture (to the default) so that -Xarch_ is handled correctly.
1766 if (!Archs.size())
1767 Archs.push_back(Args.MakeArgString(TC.getDefaultUniversalArchName()));
1768
1769 ActionList SingleActions;
1770 BuildActions(C, Args, BAInputs, SingleActions);
1771
1772 // Add in arch bindings for every top level action, as well as lipo and
1773 // dsymutil steps if needed.
1774 for (Action* Act : SingleActions) {
1775 // Make sure we can lipo this kind of output. If not (and it is an actual
1776 // output) then we disallow, since we can't create an output file with the
1777 // right name without overwriting it. We could remove this oddity by just
1778 // changing the output names to include the arch, which would also fix
1779 // -save-temps. Compatibility wins for now.
1780
1781 if (Archs.size() > 1 && !types::canLipoType(Act->getType()))
1782 Diag(clang::diag::err_drv_invalid_output_with_multiple_archs)
1783 << types::getTypeName(Act->getType());
1784
1785 ActionList Inputs;
1786 for (unsigned i = 0, e = Archs.size(); i != e; ++i)
1787 Inputs.push_back(C.MakeAction<BindArchAction>(Act, Archs[i]));
1788
1789 // Lipo if necessary, we do it this way because we need to set the arch flag
1790 // so that -Xarch_ gets overwritten.
1791 if (Inputs.size() == 1 || Act->getType() == types::TY_Nothing)
1792 Actions.append(Inputs.begin(), Inputs.end());
1793 else
1794 Actions.push_back(C.MakeAction<LipoJobAction>(Inputs, Act->getType()));
1795
1796 // Handle debug info queries.
1797 Arg *A = Args.getLastArg(options::OPT_g_Group);
1798 if (A && !A->getOption().matches(options::OPT_g0) &&
1799 !A->getOption().matches(options::OPT_gstabs) &&
1800 ContainsCompileOrAssembleAction(Actions.back())) {
1801
1802 // Add a 'dsymutil' step if necessary, when debug info is enabled and we
1803 // have a compile input. We need to run 'dsymutil' ourselves in such cases
1804 // because the debug info will refer to a temporary object file which
1805 // will be removed at the end of the compilation process.
1806 if (Act->getType() == types::TY_Image) {
1807 ActionList Inputs;
1808 Inputs.push_back(Actions.back());
1809 Actions.pop_back();
1810 Actions.push_back(
1811 C.MakeAction<DsymutilJobAction>(Inputs, types::TY_dSYM));
1812 }
1813
1814 // Verify the debug info output.
1815 if (Args.hasArg(options::OPT_verify_debug_info)) {
1816 Action* LastAction = Actions.back();
1817 Actions.pop_back();
1818 Actions.push_back(C.MakeAction<VerifyDebugInfoJobAction>(
1819 LastAction, types::TY_Nothing));
1820 }
1821 }
1822 }
1823}
1824
1825/// \brief Check that the file referenced by Value exists. If it doesn't,
1826/// issue a diagnostic and return false.
1827static bool DiagnoseInputExistence(const Driver &D, const DerivedArgList &Args,
1828 StringRef Value, types::ID Ty) {
1829 if (!D.getCheckInputsExist())
1830 return true;
1831
1832 // stdin always exists.
1833 if (Value == "-")
1834 return true;
1835
1836 SmallString<64> Path(Value);
1837 if (Arg *WorkDir = Args.getLastArg(options::OPT_working_directory)) {
1838 if (!llvm::sys::path::is_absolute(Path)) {
1839 SmallString<64> Directory(WorkDir->getValue());
1840 llvm::sys::path::append(Directory, Value);
1841 Path.assign(Directory);
1842 }
1843 }
1844
1845 if (llvm::sys::fs::exists(Twine(Path)))
1846 return true;
1847
1848 if (D.IsCLMode()) {
1849 if (!llvm::sys::path::is_absolute(Twine(Path)) &&
1850 llvm::sys::Process::FindInEnvPath("LIB", Value))
1851 return true;
1852
1853 if (Args.hasArg(options::OPT__SLASH_link) && Ty == types::TY_Object) {
1854 // Arguments to the /link flag might cause the linker to search for object
1855 // and library files in paths we don't know about. Don't error in such
1856 // cases.
1857 return true;
1858 }
1859 }
1860
1861 D.Diag(clang::diag::err_drv_no_such_file) << Path;
1862 return false;
1863}
1864
1865// Construct a the list of inputs and their types.
1866void Driver::BuildInputs(const ToolChain &TC, DerivedArgList &Args,
1867 InputList &Inputs) const {
1868 // Track the current user specified (-x) input. We also explicitly track the
1869 // argument used to set the type; we only want to claim the type when we
1870 // actually use it, so we warn about unused -x arguments.
1871 types::ID InputType = types::TY_Nothing;
1872 Arg *InputTypeArg = nullptr;
1873
1874 // The last /TC or /TP option sets the input type to C or C++ globally.
1875 if (Arg *TCTP = Args.getLastArgNoClaim(options::OPT__SLASH_TC,
1876 options::OPT__SLASH_TP)) {
1877 InputTypeArg = TCTP;
1878 InputType = TCTP->getOption().matches(options::OPT__SLASH_TC)
1879 ? types::TY_C
1880 : types::TY_CXX;
1881
1882 Arg *Previous = nullptr;
1883 bool ShowNote = false;
1884 for (Arg *A : Args.filtered(options::OPT__SLASH_TC, options::OPT__SLASH_TP)) {
1885 if (Previous) {
1886 Diag(clang::diag::warn_drv_overriding_flag_option)
1887 << Previous->getSpelling() << A->getSpelling();
1888 ShowNote = true;
1889 }
1890 Previous = A;
1891 }
1892 if (ShowNote)
1893 Diag(clang::diag::note_drv_t_option_is_global);
1894
1895 // No driver mode exposes -x and /TC or /TP; we don't support mixing them.
1896 assert(!Args.hasArg(options::OPT_x) && "-x and /TC or /TP is not allowed")(static_cast <bool> (!Args.hasArg(options::OPT_x) &&
"-x and /TC or /TP is not allowed") ? void (0) : __assert_fail
("!Args.hasArg(options::OPT_x) && \"-x and /TC or /TP is not allowed\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 1896, __extension__ __PRETTY_FUNCTION__))
;
1897 }
1898
1899 for (Arg *A : Args) {
1900 if (A->getOption().getKind() == Option::InputClass) {
1901 const char *Value = A->getValue();
1902 types::ID Ty = types::TY_INVALID;
1903
1904 // Infer the input type if necessary.
1905 if (InputType == types::TY_Nothing) {
1906 // If there was an explicit arg for this, claim it.
1907 if (InputTypeArg)
1908 InputTypeArg->claim();
1909
1910 // stdin must be handled specially.
1911 if (memcmp(Value, "-", 2) == 0) {
1912 // If running with -E, treat as a C input (this changes the builtin
1913 // macros, for example). This may be overridden by -ObjC below.
1914 //
1915 // Otherwise emit an error but still use a valid type to avoid
1916 // spurious errors (e.g., no inputs).
1917 if (!Args.hasArgNoClaim(options::OPT_E) && !CCCIsCPP())
1918 Diag(IsCLMode() ? clang::diag::err_drv_unknown_stdin_type_clang_cl
1919 : clang::diag::err_drv_unknown_stdin_type);
1920 Ty = types::TY_C;
1921 } else {
1922 // Otherwise lookup by extension.
1923 // Fallback is C if invoked as C preprocessor or Object otherwise.
1924 // We use a host hook here because Darwin at least has its own
1925 // idea of what .s is.
1926 if (const char *Ext = strrchr(Value, '.'))
1927 Ty = TC.LookupTypeForExtension(Ext + 1);
1928
1929 if (Ty == types::TY_INVALID) {
1930 if (CCCIsCPP())
1931 Ty = types::TY_C;
1932 else
1933 Ty = types::TY_Object;
1934 }
1935
1936 // If the driver is invoked as C++ compiler (like clang++ or c++) it
1937 // should autodetect some input files as C++ for g++ compatibility.
1938 if (CCCIsCXX()) {
1939 types::ID OldTy = Ty;
1940 Ty = types::lookupCXXTypeForCType(Ty);
1941
1942 if (Ty != OldTy)
1943 Diag(clang::diag::warn_drv_treating_input_as_cxx)
1944 << getTypeName(OldTy) << getTypeName(Ty);
1945 }
1946 }
1947
1948 // -ObjC and -ObjC++ override the default language, but only for "source
1949 // files". We just treat everything that isn't a linker input as a
1950 // source file.
1951 //
1952 // FIXME: Clean this up if we move the phase sequence into the type.
1953 if (Ty != types::TY_Object) {
1954 if (Args.hasArg(options::OPT_ObjC))
1955 Ty = types::TY_ObjC;
1956 else if (Args.hasArg(options::OPT_ObjCXX))
1957 Ty = types::TY_ObjCXX;
1958 }
1959 } else {
1960 assert(InputTypeArg && "InputType set w/o InputTypeArg")(static_cast <bool> (InputTypeArg && "InputType set w/o InputTypeArg"
) ? void (0) : __assert_fail ("InputTypeArg && \"InputType set w/o InputTypeArg\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 1960, __extension__ __PRETTY_FUNCTION__))
;
1961 if (!InputTypeArg->getOption().matches(options::OPT_x)) {
1962 // If emulating cl.exe, make sure that /TC and /TP don't affect input
1963 // object files.
1964 const char *Ext = strrchr(Value, '.');
1965 if (Ext && TC.LookupTypeForExtension(Ext + 1) == types::TY_Object)
1966 Ty = types::TY_Object;
1967 }
1968 if (Ty == types::TY_INVALID) {
1969 Ty = InputType;
1970 InputTypeArg->claim();
1971 }
1972 }
1973
1974 if (DiagnoseInputExistence(*this, Args, Value, Ty))
1975 Inputs.push_back(std::make_pair(Ty, A));
1976
1977 } else if (A->getOption().matches(options::OPT__SLASH_Tc)) {
1978 StringRef Value = A->getValue();
1979 if (DiagnoseInputExistence(*this, Args, Value, types::TY_C)) {
1980 Arg *InputArg = MakeInputArg(Args, *Opts, A->getValue());
1981 Inputs.push_back(std::make_pair(types::TY_C, InputArg));
1982 }
1983 A->claim();
1984 } else if (A->getOption().matches(options::OPT__SLASH_Tp)) {
1985 StringRef Value = A->getValue();
1986 if (DiagnoseInputExistence(*this, Args, Value, types::TY_CXX)) {
1987 Arg *InputArg = MakeInputArg(Args, *Opts, A->getValue());
1988 Inputs.push_back(std::make_pair(types::TY_CXX, InputArg));
1989 }
1990 A->claim();
1991 } else if (A->getOption().hasFlag(options::LinkerInput)) {
1992 // Just treat as object type, we could make a special type for this if
1993 // necessary.
1994 Inputs.push_back(std::make_pair(types::TY_Object, A));
1995
1996 } else if (A->getOption().matches(options::OPT_x)) {
1997 InputTypeArg = A;
1998 InputType = types::lookupTypeForTypeSpecifier(A->getValue());
1999 A->claim();
2000
2001 // Follow gcc behavior and treat as linker input for invalid -x
2002 // options. Its not clear why we shouldn't just revert to unknown; but
2003 // this isn't very important, we might as well be bug compatible.
2004 if (!InputType) {
2005 Diag(clang::diag::err_drv_unknown_language) << A->getValue();
2006 InputType = types::TY_Object;
2007 }
2008 } else if (A->getOption().getID() == options::OPT__SLASH_U) {
2009 assert(A->getNumValues() == 1 && "The /U option has one value.")(static_cast <bool> (A->getNumValues() == 1 &&
"The /U option has one value.") ? void (0) : __assert_fail (
"A->getNumValues() == 1 && \"The /U option has one value.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2009, __extension__ __PRETTY_FUNCTION__))
;
2010 StringRef Val = A->getValue(0);
2011 if (Val.find_first_of("/\\") != StringRef::npos) {
2012 // Warn about e.g. "/Users/me/myfile.c".
2013 Diag(diag::warn_slash_u_filename) << Val;
2014 Diag(diag::note_use_dashdash);
2015 }
2016 }
2017 }
2018 if (CCCIsCPP() && Inputs.empty()) {
2019 // If called as standalone preprocessor, stdin is processed
2020 // if no other input is present.
2021 Arg *A = MakeInputArg(Args, *Opts, "-");
2022 Inputs.push_back(std::make_pair(types::TY_C, A));
2023 }
2024}
2025
2026namespace {
2027/// Provides a convenient interface for different programming models to generate
2028/// the required device actions.
2029class OffloadingActionBuilder final {
2030 /// Flag used to trace errors in the builder.
2031 bool IsValid = false;
2032
2033 /// The compilation that is using this builder.
2034 Compilation &C;
2035
2036 /// Map between an input argument and the offload kinds used to process it.
2037 std::map<const Arg *, unsigned> InputArgToOffloadKindMap;
2038
2039 /// Builder interface. It doesn't build anything or keep any state.
2040 class DeviceActionBuilder {
2041 public:
2042 typedef llvm::SmallVector<phases::ID, phases::MaxNumberOfPhases> PhasesTy;
2043
2044 enum ActionBuilderReturnCode {
2045 // The builder acted successfully on the current action.
2046 ABRT_Success,
2047 // The builder didn't have to act on the current action.
2048 ABRT_Inactive,
2049 // The builder was successful and requested the host action to not be
2050 // generated.
2051 ABRT_Ignore_Host,
2052 };
2053
2054 protected:
2055 /// Compilation associated with this builder.
2056 Compilation &C;
2057
2058 /// Tool chains associated with this builder. The same programming
2059 /// model may have associated one or more tool chains.
2060 SmallVector<const ToolChain *, 2> ToolChains;
2061
2062 /// The derived arguments associated with this builder.
2063 DerivedArgList &Args;
2064
2065 /// The inputs associated with this builder.
2066 const Driver::InputList &Inputs;
2067
2068 /// The associated offload kind.
2069 Action::OffloadKind AssociatedOffloadKind = Action::OFK_None;
2070
2071 public:
2072 DeviceActionBuilder(Compilation &C, DerivedArgList &Args,
2073 const Driver::InputList &Inputs,
2074 Action::OffloadKind AssociatedOffloadKind)
2075 : C(C), Args(Args), Inputs(Inputs),
2076 AssociatedOffloadKind(AssociatedOffloadKind) {}
2077 virtual ~DeviceActionBuilder() {}
2078
2079 /// Fill up the array \a DA with all the device dependences that should be
2080 /// added to the provided host action \a HostAction. By default it is
2081 /// inactive.
2082 virtual ActionBuilderReturnCode
2083 getDeviceDependences(OffloadAction::DeviceDependences &DA,
2084 phases::ID CurPhase, phases::ID FinalPhase,
2085 PhasesTy &Phases) {
2086 return ABRT_Inactive;
2087 }
2088
2089 /// Update the state to include the provided host action \a HostAction as a
2090 /// dependency of the current device action. By default it is inactive.
2091 virtual ActionBuilderReturnCode addDeviceDepences(Action *HostAction) {
2092 return ABRT_Inactive;
2093 }
2094
2095 /// Append top level actions generated by the builder. Return true if errors
2096 /// were found.
2097 virtual void appendTopLevelActions(ActionList &AL) {}
2098
2099 /// Append linker actions generated by the builder. Return true if errors
2100 /// were found.
2101 virtual void appendLinkDependences(OffloadAction::DeviceDependences &DA) {}
2102
2103 /// Initialize the builder. Return true if any initialization errors are
2104 /// found.
2105 virtual bool initialize() { return false; }
2106
2107 /// Return true if the builder can use bundling/unbundling.
2108 virtual bool canUseBundlerUnbundler() const { return false; }
2109
2110 /// Return true if this builder is valid. We have a valid builder if we have
2111 /// associated device tool chains.
2112 bool isValid() { return !ToolChains.empty(); }
2113
2114 /// Return the associated offload kind.
2115 Action::OffloadKind getAssociatedOffloadKind() {
2116 return AssociatedOffloadKind;
2117 }
2118 };
2119
2120 /// \brief CUDA action builder. It injects device code in the host backend
2121 /// action.
2122 class CudaActionBuilder final : public DeviceActionBuilder {
2123 /// Flags to signal if the user requested host-only or device-only
2124 /// compilation.
2125 bool CompileHostOnly = false;
2126 bool CompileDeviceOnly = false;
2127
2128 /// List of GPU architectures to use in this compilation.
2129 SmallVector<CudaArch, 4> GpuArchList;
2130
2131 /// The CUDA actions for the current input.
2132 ActionList CudaDeviceActions;
2133
2134 /// The CUDA fat binary if it was generated for the current input.
2135 Action *CudaFatBinary = nullptr;
2136
2137 /// Flag that is set to true if this builder acted on the current input.
2138 bool IsActive = false;
2139
2140 public:
2141 CudaActionBuilder(Compilation &C, DerivedArgList &Args,
2142 const Driver::InputList &Inputs)
2143 : DeviceActionBuilder(C, Args, Inputs, Action::OFK_Cuda) {}
2144
2145 ActionBuilderReturnCode
2146 getDeviceDependences(OffloadAction::DeviceDependences &DA,
2147 phases::ID CurPhase, phases::ID FinalPhase,
2148 PhasesTy &Phases) override {
2149 if (!IsActive)
2150 return ABRT_Inactive;
2151
2152 // If we don't have more CUDA actions, we don't have any dependences to
2153 // create for the host.
2154 if (CudaDeviceActions.empty())
2155 return ABRT_Success;
2156
2157 assert(CudaDeviceActions.size() == GpuArchList.size() &&(static_cast <bool> (CudaDeviceActions.size() == GpuArchList
.size() && "Expecting one action per GPU architecture."
) ? void (0) : __assert_fail ("CudaDeviceActions.size() == GpuArchList.size() && \"Expecting one action per GPU architecture.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2158, __extension__ __PRETTY_FUNCTION__))
2158 "Expecting one action per GPU architecture.")(static_cast <bool> (CudaDeviceActions.size() == GpuArchList
.size() && "Expecting one action per GPU architecture."
) ? void (0) : __assert_fail ("CudaDeviceActions.size() == GpuArchList.size() && \"Expecting one action per GPU architecture.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2158, __extension__ __PRETTY_FUNCTION__))
;
2159 assert(!CompileHostOnly &&(static_cast <bool> (!CompileHostOnly && "Not expecting CUDA actions in host-only compilation."
) ? void (0) : __assert_fail ("!CompileHostOnly && \"Not expecting CUDA actions in host-only compilation.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2160, __extension__ __PRETTY_FUNCTION__))
2160 "Not expecting CUDA actions in host-only compilation.")(static_cast <bool> (!CompileHostOnly && "Not expecting CUDA actions in host-only compilation."
) ? void (0) : __assert_fail ("!CompileHostOnly && \"Not expecting CUDA actions in host-only compilation.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2160, __extension__ __PRETTY_FUNCTION__))
;
2161
2162 // If we are generating code for the device or we are in a backend phase,
2163 // we attempt to generate the fat binary. We compile each arch to ptx and
2164 // assemble to cubin, then feed the cubin *and* the ptx into a device
2165 // "link" action, which uses fatbinary to combine these cubins into one
2166 // fatbin. The fatbin is then an input to the host action if not in
2167 // device-only mode.
2168 if (CompileDeviceOnly || CurPhase == phases::Backend) {
2169 ActionList DeviceActions;
2170 for (unsigned I = 0, E = GpuArchList.size(); I != E; ++I) {
2171 // Produce the device action from the current phase up to the assemble
2172 // phase.
2173 for (auto Ph : Phases) {
2174 // Skip the phases that were already dealt with.
2175 if (Ph < CurPhase)
2176 continue;
2177 // We have to be consistent with the host final phase.
2178 if (Ph > FinalPhase)
2179 break;
2180
2181 CudaDeviceActions[I] = C.getDriver().ConstructPhaseAction(
2182 C, Args, Ph, CudaDeviceActions[I], Action::OFK_Cuda);
2183
2184 if (Ph == phases::Assemble)
2185 break;
2186 }
2187
2188 // If we didn't reach the assemble phase, we can't generate the fat
2189 // binary. We don't need to generate the fat binary if we are not in
2190 // device-only mode.
2191 if (!isa<AssembleJobAction>(CudaDeviceActions[I]) ||
2192 CompileDeviceOnly)
2193 continue;
2194
2195 Action *AssembleAction = CudaDeviceActions[I];
2196 assert(AssembleAction->getType() == types::TY_Object)(static_cast <bool> (AssembleAction->getType() == types
::TY_Object) ? void (0) : __assert_fail ("AssembleAction->getType() == types::TY_Object"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2196, __extension__ __PRETTY_FUNCTION__))
;
2197 assert(AssembleAction->getInputs().size() == 1)(static_cast <bool> (AssembleAction->getInputs().size
() == 1) ? void (0) : __assert_fail ("AssembleAction->getInputs().size() == 1"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2197, __extension__ __PRETTY_FUNCTION__))
;
2198
2199 Action *BackendAction = AssembleAction->getInputs()[0];
2200 assert(BackendAction->getType() == types::TY_PP_Asm)(static_cast <bool> (BackendAction->getType() == types
::TY_PP_Asm) ? void (0) : __assert_fail ("BackendAction->getType() == types::TY_PP_Asm"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2200, __extension__ __PRETTY_FUNCTION__))
;
2201
2202 for (auto &A : {AssembleAction, BackendAction}) {
2203 OffloadAction::DeviceDependences DDep;
2204 DDep.add(*A, *ToolChains.front(), CudaArchToString(GpuArchList[I]),
2205 Action::OFK_Cuda);
2206 DeviceActions.push_back(
2207 C.MakeAction<OffloadAction>(DDep, A->getType()));
2208 }
2209 }
2210
2211 // We generate the fat binary if we have device input actions.
2212 if (!DeviceActions.empty()) {
2213 CudaFatBinary =
2214 C.MakeAction<LinkJobAction>(DeviceActions, types::TY_CUDA_FATBIN);
2215
2216 if (!CompileDeviceOnly) {
2217 DA.add(*CudaFatBinary, *ToolChains.front(), /*BoundArch=*/nullptr,
2218 Action::OFK_Cuda);
2219 // Clear the fat binary, it is already a dependence to an host
2220 // action.
2221 CudaFatBinary = nullptr;
2222 }
2223
2224 // Remove the CUDA actions as they are already connected to an host
2225 // action or fat binary.
2226 CudaDeviceActions.clear();
2227 }
2228
2229 // We avoid creating host action in device-only mode.
2230 return CompileDeviceOnly ? ABRT_Ignore_Host : ABRT_Success;
2231 } else if (CurPhase > phases::Backend) {
2232 // If we are past the backend phase and still have a device action, we
2233 // don't have to do anything as this action is already a device
2234 // top-level action.
2235 return ABRT_Success;
2236 }
2237
2238 assert(CurPhase < phases::Backend && "Generating single CUDA "(static_cast <bool> (CurPhase < phases::Backend &&
"Generating single CUDA " "instructions should only occur " "before the backend phase!"
) ? void (0) : __assert_fail ("CurPhase < phases::Backend && \"Generating single CUDA \" \"instructions should only occur \" \"before the backend phase!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2240, __extension__ __PRETTY_FUNCTION__))
2239 "instructions should only occur "(static_cast <bool> (CurPhase < phases::Backend &&
"Generating single CUDA " "instructions should only occur " "before the backend phase!"
) ? void (0) : __assert_fail ("CurPhase < phases::Backend && \"Generating single CUDA \" \"instructions should only occur \" \"before the backend phase!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2240, __extension__ __PRETTY_FUNCTION__))
2240 "before the backend phase!")(static_cast <bool> (CurPhase < phases::Backend &&
"Generating single CUDA " "instructions should only occur " "before the backend phase!"
) ? void (0) : __assert_fail ("CurPhase < phases::Backend && \"Generating single CUDA \" \"instructions should only occur \" \"before the backend phase!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2240, __extension__ __PRETTY_FUNCTION__))
;
2241
2242 // By default, we produce an action for each device arch.
2243 for (Action *&A : CudaDeviceActions)
2244 A = C.getDriver().ConstructPhaseAction(C, Args, CurPhase, A);
2245
2246 return ABRT_Success;
2247 }
2248
2249 ActionBuilderReturnCode addDeviceDepences(Action *HostAction) override {
2250 // While generating code for CUDA, we only depend on the host input action
2251 // to trigger the creation of all the CUDA device actions.
2252
2253 // If we are dealing with an input action, replicate it for each GPU
2254 // architecture. If we are in host-only mode we return 'success' so that
2255 // the host uses the CUDA offload kind.
2256 if (auto *IA = dyn_cast<InputAction>(HostAction)) {
2257 assert(!GpuArchList.empty() &&(static_cast <bool> (!GpuArchList.empty() && "We should have at least one GPU architecture."
) ? void (0) : __assert_fail ("!GpuArchList.empty() && \"We should have at least one GPU architecture.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2258, __extension__ __PRETTY_FUNCTION__))
2258 "We should have at least one GPU architecture.")(static_cast <bool> (!GpuArchList.empty() && "We should have at least one GPU architecture."
) ? void (0) : __assert_fail ("!GpuArchList.empty() && \"We should have at least one GPU architecture.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2258, __extension__ __PRETTY_FUNCTION__))
;
2259
2260 // If the host input is not CUDA, we don't need to bother about this
2261 // input.
2262 if (IA->getType() != types::TY_CUDA) {
2263 // The builder will ignore this input.
2264 IsActive = false;
2265 return ABRT_Inactive;
2266 }
2267
2268 // Set the flag to true, so that the builder acts on the current input.
2269 IsActive = true;
2270
2271 if (CompileHostOnly)
2272 return ABRT_Success;
2273
2274 // Replicate inputs for each GPU architecture.
2275 for (unsigned I = 0, E = GpuArchList.size(); I != E; ++I)
2276 CudaDeviceActions.push_back(C.MakeAction<InputAction>(
2277 IA->getInputArg(), types::TY_CUDA_DEVICE));
2278
2279 return ABRT_Success;
2280 }
2281
2282 return IsActive ? ABRT_Success : ABRT_Inactive;
2283 }
2284
2285 void appendTopLevelActions(ActionList &AL) override {
2286 // Utility to append actions to the top level list.
2287 auto AddTopLevel = [&](Action *A, CudaArch BoundArch) {
2288 OffloadAction::DeviceDependences Dep;
2289 Dep.add(*A, *ToolChains.front(), CudaArchToString(BoundArch),
2290 Action::OFK_Cuda);
2291 AL.push_back(C.MakeAction<OffloadAction>(Dep, A->getType()));
2292 };
2293
2294 // If we have a fat binary, add it to the list.
2295 if (CudaFatBinary) {
2296 AddTopLevel(CudaFatBinary, CudaArch::UNKNOWN);
2297 CudaDeviceActions.clear();
2298 CudaFatBinary = nullptr;
2299 return;
2300 }
2301
2302 if (CudaDeviceActions.empty())
2303 return;
2304
2305 // If we have CUDA actions at this point, that's because we have a have
2306 // partial compilation, so we should have an action for each GPU
2307 // architecture.
2308 assert(CudaDeviceActions.size() == GpuArchList.size() &&(static_cast <bool> (CudaDeviceActions.size() == GpuArchList
.size() && "Expecting one action per GPU architecture."
) ? void (0) : __assert_fail ("CudaDeviceActions.size() == GpuArchList.size() && \"Expecting one action per GPU architecture.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2309, __extension__ __PRETTY_FUNCTION__))
2309 "Expecting one action per GPU architecture.")(static_cast <bool> (CudaDeviceActions.size() == GpuArchList
.size() && "Expecting one action per GPU architecture."
) ? void (0) : __assert_fail ("CudaDeviceActions.size() == GpuArchList.size() && \"Expecting one action per GPU architecture.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2309, __extension__ __PRETTY_FUNCTION__))
;
2310 assert(ToolChains.size() == 1 &&(static_cast <bool> (ToolChains.size() == 1 && "Expecting to have a sing CUDA toolchain."
) ? void (0) : __assert_fail ("ToolChains.size() == 1 && \"Expecting to have a sing CUDA toolchain.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2311, __extension__ __PRETTY_FUNCTION__))
2311 "Expecting to have a sing CUDA toolchain.")(static_cast <bool> (ToolChains.size() == 1 && "Expecting to have a sing CUDA toolchain."
) ? void (0) : __assert_fail ("ToolChains.size() == 1 && \"Expecting to have a sing CUDA toolchain.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2311, __extension__ __PRETTY_FUNCTION__))
;
2312 for (unsigned I = 0, E = GpuArchList.size(); I != E; ++I)
2313 AddTopLevel(CudaDeviceActions[I], GpuArchList[I]);
2314
2315 CudaDeviceActions.clear();
2316 }
2317
2318 bool initialize() override {
2319 // We don't need to support CUDA.
2320 if (!C.hasOffloadToolChain<Action::OFK_Cuda>())
2321 return false;
2322
2323 const ToolChain *HostTC = C.getSingleOffloadToolChain<Action::OFK_Host>();
2324 assert(HostTC && "No toolchain for host compilation.")(static_cast <bool> (HostTC && "No toolchain for host compilation."
) ? void (0) : __assert_fail ("HostTC && \"No toolchain for host compilation.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2324, __extension__ __PRETTY_FUNCTION__))
;
2325 if (HostTC->getTriple().isNVPTX()) {
2326 // We do not support targeting NVPTX for host compilation. Throw
2327 // an error and abort pipeline construction early so we don't trip
2328 // asserts that assume device-side compilation.
2329 C.getDriver().Diag(diag::err_drv_cuda_nvptx_host);
2330 return true;
2331 }
2332
2333 ToolChains.push_back(C.getSingleOffloadToolChain<Action::OFK_Cuda>());
2334
2335 Arg *PartialCompilationArg = Args.getLastArg(
2336 options::OPT_cuda_host_only, options::OPT_cuda_device_only,
2337 options::OPT_cuda_compile_host_device);
2338 CompileHostOnly = PartialCompilationArg &&
2339 PartialCompilationArg->getOption().matches(
2340 options::OPT_cuda_host_only);
2341 CompileDeviceOnly = PartialCompilationArg &&
2342 PartialCompilationArg->getOption().matches(
2343 options::OPT_cuda_device_only);
2344
2345 // Collect all cuda_gpu_arch parameters, removing duplicates.
2346 std::set<CudaArch> GpuArchs;
2347 bool Error = false;
2348 for (Arg *A : Args) {
2349 if (!(A->getOption().matches(options::OPT_cuda_gpu_arch_EQ) ||
2350 A->getOption().matches(options::OPT_no_cuda_gpu_arch_EQ)))
2351 continue;
2352 A->claim();
2353
2354 const StringRef ArchStr = A->getValue();
2355 if (A->getOption().matches(options::OPT_no_cuda_gpu_arch_EQ) &&
2356 ArchStr == "all") {
2357 GpuArchs.clear();
2358 continue;
2359 }
2360 CudaArch Arch = StringToCudaArch(ArchStr);
2361 if (Arch == CudaArch::UNKNOWN) {
2362 C.getDriver().Diag(clang::diag::err_drv_cuda_bad_gpu_arch) << ArchStr;
2363 Error = true;
2364 } else if (A->getOption().matches(options::OPT_cuda_gpu_arch_EQ))
2365 GpuArchs.insert(Arch);
2366 else if (A->getOption().matches(options::OPT_no_cuda_gpu_arch_EQ))
2367 GpuArchs.erase(Arch);
2368 else
2369 llvm_unreachable("Unexpected option.")::llvm::llvm_unreachable_internal("Unexpected option.", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2369)
;
2370 }
2371
2372 // Collect list of GPUs remaining in the set.
2373 for (CudaArch Arch : GpuArchs)
2374 GpuArchList.push_back(Arch);
2375
2376 // Default to sm_20 which is the lowest common denominator for
2377 // supported GPUs. sm_20 code should work correctly, if
2378 // suboptimally, on all newer GPUs.
2379 if (GpuArchList.empty())
2380 GpuArchList.push_back(CudaArch::SM_20);
2381
2382 return Error;
2383 }
2384 };
2385
2386 /// OpenMP action builder. The host bitcode is passed to the device frontend
2387 /// and all the device linked images are passed to the host link phase.
2388 class OpenMPActionBuilder final : public DeviceActionBuilder {
2389 /// The OpenMP actions for the current input.
2390 ActionList OpenMPDeviceActions;
2391
2392 /// The linker inputs obtained for each toolchain.
2393 SmallVector<ActionList, 8> DeviceLinkerInputs;
2394
2395 public:
2396 OpenMPActionBuilder(Compilation &C, DerivedArgList &Args,
2397 const Driver::InputList &Inputs)
2398 : DeviceActionBuilder(C, Args, Inputs, Action::OFK_OpenMP) {}
2399
2400 ActionBuilderReturnCode
2401 getDeviceDependences(OffloadAction::DeviceDependences &DA,
2402 phases::ID CurPhase, phases::ID FinalPhase,
2403 PhasesTy &Phases) override {
2404
2405 // We should always have an action for each input.
2406 assert(OpenMPDeviceActions.size() == ToolChains.size() &&(static_cast <bool> (OpenMPDeviceActions.size() == ToolChains
.size() && "Number of OpenMP actions and toolchains do not match."
) ? void (0) : __assert_fail ("OpenMPDeviceActions.size() == ToolChains.size() && \"Number of OpenMP actions and toolchains do not match.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2407, __extension__ __PRETTY_FUNCTION__))
2407 "Number of OpenMP actions and toolchains do not match.")(static_cast <bool> (OpenMPDeviceActions.size() == ToolChains
.size() && "Number of OpenMP actions and toolchains do not match."
) ? void (0) : __assert_fail ("OpenMPDeviceActions.size() == ToolChains.size() && \"Number of OpenMP actions and toolchains do not match.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2407, __extension__ __PRETTY_FUNCTION__))
;
2408
2409 // The host only depends on device action in the linking phase, when all
2410 // the device images have to be embedded in the host image.
2411 if (CurPhase == phases::Link) {
2412 assert(ToolChains.size() == DeviceLinkerInputs.size() &&(static_cast <bool> (ToolChains.size() == DeviceLinkerInputs
.size() && "Toolchains and linker inputs sizes do not match."
) ? void (0) : __assert_fail ("ToolChains.size() == DeviceLinkerInputs.size() && \"Toolchains and linker inputs sizes do not match.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2413, __extension__ __PRETTY_FUNCTION__))
2413 "Toolchains and linker inputs sizes do not match.")(static_cast <bool> (ToolChains.size() == DeviceLinkerInputs
.size() && "Toolchains and linker inputs sizes do not match."
) ? void (0) : __assert_fail ("ToolChains.size() == DeviceLinkerInputs.size() && \"Toolchains and linker inputs sizes do not match.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2413, __extension__ __PRETTY_FUNCTION__))
;
2414 auto LI = DeviceLinkerInputs.begin();
2415 for (auto *A : OpenMPDeviceActions) {
2416 LI->push_back(A);
2417 ++LI;
2418 }
2419
2420 // We passed the device action as a host dependence, so we don't need to
2421 // do anything else with them.
2422 OpenMPDeviceActions.clear();
2423 return ABRT_Success;
2424 }
2425
2426 // By default, we produce an action for each device arch.
2427 for (Action *&A : OpenMPDeviceActions)
2428 A = C.getDriver().ConstructPhaseAction(C, Args, CurPhase, A);
2429
2430 return ABRT_Success;
2431 }
2432
2433 ActionBuilderReturnCode addDeviceDepences(Action *HostAction) override {
2434
2435 // If this is an input action replicate it for each OpenMP toolchain.
2436 if (auto *IA = dyn_cast<InputAction>(HostAction)) {
2437 OpenMPDeviceActions.clear();
2438 for (unsigned I = 0; I < ToolChains.size(); ++I)
2439 OpenMPDeviceActions.push_back(
2440 C.MakeAction<InputAction>(IA->getInputArg(), IA->getType()));
2441 return ABRT_Success;
2442 }
2443
2444 // If this is an unbundling action use it as is for each OpenMP toolchain.
2445 if (auto *UA = dyn_cast<OffloadUnbundlingJobAction>(HostAction)) {
2446 OpenMPDeviceActions.clear();
2447 for (unsigned I = 0; I < ToolChains.size(); ++I) {
2448 OpenMPDeviceActions.push_back(UA);
2449 UA->registerDependentActionInfo(
2450 ToolChains[I], /*BoundArch=*/StringRef(), Action::OFK_OpenMP);
2451 }
2452 return ABRT_Success;
2453 }
2454
2455 // When generating code for OpenMP we use the host compile phase result as
2456 // a dependence to the device compile phase so that it can learn what
2457 // declarations should be emitted. However, this is not the only use for
2458 // the host action, so we prevent it from being collapsed.
2459 if (isa<CompileJobAction>(HostAction)) {
2460 HostAction->setCannotBeCollapsedWithNextDependentAction();
2461 assert(ToolChains.size() == OpenMPDeviceActions.size() &&(static_cast <bool> (ToolChains.size() == OpenMPDeviceActions
.size() && "Toolchains and device action sizes do not match."
) ? void (0) : __assert_fail ("ToolChains.size() == OpenMPDeviceActions.size() && \"Toolchains and device action sizes do not match.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2462, __extension__ __PRETTY_FUNCTION__))
2462 "Toolchains and device action sizes do not match.")(static_cast <bool> (ToolChains.size() == OpenMPDeviceActions
.size() && "Toolchains and device action sizes do not match."
) ? void (0) : __assert_fail ("ToolChains.size() == OpenMPDeviceActions.size() && \"Toolchains and device action sizes do not match.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2462, __extension__ __PRETTY_FUNCTION__))
;
2463 OffloadAction::HostDependence HDep(
2464 *HostAction, *C.getSingleOffloadToolChain<Action::OFK_Host>(),
2465 /*BoundArch=*/nullptr, Action::OFK_OpenMP);
2466 auto TC = ToolChains.begin();
2467 for (Action *&A : OpenMPDeviceActions) {
2468 assert(isa<CompileJobAction>(A))(static_cast <bool> (isa<CompileJobAction>(A)) ? void
(0) : __assert_fail ("isa<CompileJobAction>(A)", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2468, __extension__ __PRETTY_FUNCTION__))
;
2469 OffloadAction::DeviceDependences DDep;
2470 DDep.add(*A, **TC, /*BoundArch=*/nullptr, Action::OFK_OpenMP);
2471 A = C.MakeAction<OffloadAction>(HDep, DDep);
2472 ++TC;
2473 }
2474 }
2475 return ABRT_Success;
2476 }
2477
2478 void appendTopLevelActions(ActionList &AL) override {
2479 if (OpenMPDeviceActions.empty())
2480 return;
2481
2482 // We should always have an action for each input.
2483 assert(OpenMPDeviceActions.size() == ToolChains.size() &&(static_cast <bool> (OpenMPDeviceActions.size() == ToolChains
.size() && "Number of OpenMP actions and toolchains do not match."
) ? void (0) : __assert_fail ("OpenMPDeviceActions.size() == ToolChains.size() && \"Number of OpenMP actions and toolchains do not match.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2484, __extension__ __PRETTY_FUNCTION__))
2484 "Number of OpenMP actions and toolchains do not match.")(static_cast <bool> (OpenMPDeviceActions.size() == ToolChains
.size() && "Number of OpenMP actions and toolchains do not match."
) ? void (0) : __assert_fail ("OpenMPDeviceActions.size() == ToolChains.size() && \"Number of OpenMP actions and toolchains do not match.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2484, __extension__ __PRETTY_FUNCTION__))
;
2485
2486 // Append all device actions followed by the proper offload action.
2487 auto TI = ToolChains.begin();
2488 for (auto *A : OpenMPDeviceActions) {
2489 OffloadAction::DeviceDependences Dep;
2490 Dep.add(*A, **TI, /*BoundArch=*/nullptr, Action::OFK_OpenMP);
2491 AL.push_back(C.MakeAction<OffloadAction>(Dep, A->getType()));
2492 ++TI;
2493 }
2494 // We no longer need the action stored in this builder.
2495 OpenMPDeviceActions.clear();
2496 }
2497
2498 void appendLinkDependences(OffloadAction::DeviceDependences &DA) override {
2499 assert(ToolChains.size() == DeviceLinkerInputs.size() &&(static_cast <bool> (ToolChains.size() == DeviceLinkerInputs
.size() && "Toolchains and linker inputs sizes do not match."
) ? void (0) : __assert_fail ("ToolChains.size() == DeviceLinkerInputs.size() && \"Toolchains and linker inputs sizes do not match.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2500, __extension__ __PRETTY_FUNCTION__))
2500 "Toolchains and linker inputs sizes do not match.")(static_cast <bool> (ToolChains.size() == DeviceLinkerInputs
.size() && "Toolchains and linker inputs sizes do not match."
) ? void (0) : __assert_fail ("ToolChains.size() == DeviceLinkerInputs.size() && \"Toolchains and linker inputs sizes do not match.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2500, __extension__ __PRETTY_FUNCTION__))
;
2501
2502 // Append a new link action for each device.
2503 auto TC = ToolChains.begin();
2504 for (auto &LI : DeviceLinkerInputs) {
2505 auto *DeviceLinkAction =
2506 C.MakeAction<LinkJobAction>(LI, types::TY_Image);
2507 DA.add(*DeviceLinkAction, **TC, /*BoundArch=*/nullptr,
2508 Action::OFK_OpenMP);
2509 ++TC;
2510 }
2511 }
2512
2513 bool initialize() override {
2514 // Get the OpenMP toolchains. If we don't get any, the action builder will
2515 // know there is nothing to do related to OpenMP offloading.
2516 auto OpenMPTCRange = C.getOffloadToolChains<Action::OFK_OpenMP>();
2517 for (auto TI = OpenMPTCRange.first, TE = OpenMPTCRange.second; TI != TE;
2518 ++TI)
2519 ToolChains.push_back(TI->second);
2520
2521 DeviceLinkerInputs.resize(ToolChains.size());
2522 return false;
2523 }
2524
2525 bool canUseBundlerUnbundler() const override {
2526 // OpenMP should use bundled files whenever possible.
2527 return true;
2528 }
2529 };
2530
2531 ///
2532 /// TODO: Add the implementation for other specialized builders here.
2533 ///
2534
2535 /// Specialized builders being used by this offloading action builder.
2536 SmallVector<DeviceActionBuilder *, 4> SpecializedBuilders;
2537
2538 /// Flag set to true if all valid builders allow file bundling/unbundling.
2539 bool CanUseBundler;
2540
2541public:
2542 OffloadingActionBuilder(Compilation &C, DerivedArgList &Args,
2543 const Driver::InputList &Inputs)
2544 : C(C) {
2545 // Create a specialized builder for each device toolchain.
2546
2547 IsValid = true;
2548
2549 // Create a specialized builder for CUDA.
2550 SpecializedBuilders.push_back(new CudaActionBuilder(C, Args, Inputs));
2551
2552 // Create a specialized builder for OpenMP.
2553 SpecializedBuilders.push_back(new OpenMPActionBuilder(C, Args, Inputs));
2554
2555 //
2556 // TODO: Build other specialized builders here.
2557 //
2558
2559 // Initialize all the builders, keeping track of errors. If all valid
2560 // builders agree that we can use bundling, set the flag to true.
2561 unsigned ValidBuilders = 0u;
2562 unsigned ValidBuildersSupportingBundling = 0u;
2563 for (auto *SB : SpecializedBuilders) {
2564 IsValid = IsValid && !SB->initialize();
2565
2566 // Update the counters if the builder is valid.
2567 if (SB->isValid()) {
2568 ++ValidBuilders;
2569 if (SB->canUseBundlerUnbundler())
2570 ++ValidBuildersSupportingBundling;
2571 }
2572 }
2573 CanUseBundler =
2574 ValidBuilders && ValidBuilders == ValidBuildersSupportingBundling;
2575 }
2576
2577 ~OffloadingActionBuilder() {
2578 for (auto *SB : SpecializedBuilders)
2579 delete SB;
2580 }
2581
2582 /// Generate an action that adds device dependences (if any) to a host action.
2583 /// If no device dependence actions exist, just return the host action \a
2584 /// HostAction. If an error is found or if no builder requires the host action
2585 /// to be generated, return nullptr.
2586 Action *
2587 addDeviceDependencesToHostAction(Action *HostAction, const Arg *InputArg,
2588 phases::ID CurPhase, phases::ID FinalPhase,
2589 DeviceActionBuilder::PhasesTy &Phases) {
2590 if (!IsValid)
2591 return nullptr;
2592
2593 if (SpecializedBuilders.empty())
2594 return HostAction;
2595
2596 assert(HostAction && "Invalid host action!")(static_cast <bool> (HostAction && "Invalid host action!"
) ? void (0) : __assert_fail ("HostAction && \"Invalid host action!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2596, __extension__ __PRETTY_FUNCTION__))
;
2597
2598 OffloadAction::DeviceDependences DDeps;
2599 // Check if all the programming models agree we should not emit the host
2600 // action. Also, keep track of the offloading kinds employed.
2601 auto &OffloadKind = InputArgToOffloadKindMap[InputArg];
2602 unsigned InactiveBuilders = 0u;
2603 unsigned IgnoringBuilders = 0u;
2604 for (auto *SB : SpecializedBuilders) {
2605 if (!SB->isValid()) {
2606 ++InactiveBuilders;
2607 continue;
2608 }
2609
2610 auto RetCode =
2611 SB->getDeviceDependences(DDeps, CurPhase, FinalPhase, Phases);
2612
2613 // If the builder explicitly says the host action should be ignored,
2614 // we need to increment the variable that tracks the builders that request
2615 // the host object to be ignored.
2616 if (RetCode == DeviceActionBuilder::ABRT_Ignore_Host)
2617 ++IgnoringBuilders;
2618
2619 // Unless the builder was inactive for this action, we have to record the
2620 // offload kind because the host will have to use it.
2621 if (RetCode != DeviceActionBuilder::ABRT_Inactive)
2622 OffloadKind |= SB->getAssociatedOffloadKind();
2623 }
2624
2625 // If all builders agree that the host object should be ignored, just return
2626 // nullptr.
2627 if (IgnoringBuilders &&
2628 SpecializedBuilders.size() == (InactiveBuilders + IgnoringBuilders))
2629 return nullptr;
2630
2631 if (DDeps.getActions().empty())
2632 return HostAction;
2633
2634 // We have dependences we need to bundle together. We use an offload action
2635 // for that.
2636 OffloadAction::HostDependence HDep(
2637 *HostAction, *C.getSingleOffloadToolChain<Action::OFK_Host>(),
2638 /*BoundArch=*/nullptr, DDeps);
2639 return C.MakeAction<OffloadAction>(HDep, DDeps);
2640 }
2641
2642 /// Generate an action that adds a host dependence to a device action. The
2643 /// results will be kept in this action builder. Return true if an error was
2644 /// found.
2645 bool addHostDependenceToDeviceActions(Action *&HostAction,
2646 const Arg *InputArg) {
2647 if (!IsValid)
2648 return true;
2649
2650 // If we are supporting bundling/unbundling and the current action is an
2651 // input action of non-source file, we replace the host action by the
2652 // unbundling action. The bundler tool has the logic to detect if an input
2653 // is a bundle or not and if the input is not a bundle it assumes it is a
2654 // host file. Therefore it is safe to create an unbundling action even if
2655 // the input is not a bundle.
2656 if (CanUseBundler && isa<InputAction>(HostAction) &&
2657 InputArg->getOption().getKind() == llvm::opt::Option::InputClass &&
2658 !types::isSrcFile(HostAction->getType())) {
2659 auto UnbundlingHostAction =
2660 C.MakeAction<OffloadUnbundlingJobAction>(HostAction);
2661 UnbundlingHostAction->registerDependentActionInfo(
2662 C.getSingleOffloadToolChain<Action::OFK_Host>(),
2663 /*BoundArch=*/StringRef(), Action::OFK_Host);
2664 HostAction = UnbundlingHostAction;
2665 }
2666
2667 assert(HostAction && "Invalid host action!")(static_cast <bool> (HostAction && "Invalid host action!"
) ? void (0) : __assert_fail ("HostAction && \"Invalid host action!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2667, __extension__ __PRETTY_FUNCTION__))
;
2668
2669 // Register the offload kinds that are used.
2670 auto &OffloadKind = InputArgToOffloadKindMap[InputArg];
2671 for (auto *SB : SpecializedBuilders) {
2672 if (!SB->isValid())
2673 continue;
2674
2675 auto RetCode = SB->addDeviceDepences(HostAction);
2676
2677 // Host dependences for device actions are not compatible with that same
2678 // action being ignored.
2679 assert(RetCode != DeviceActionBuilder::ABRT_Ignore_Host &&(static_cast <bool> (RetCode != DeviceActionBuilder::ABRT_Ignore_Host
&& "Host dependence not expected to be ignored.!") ?
void (0) : __assert_fail ("RetCode != DeviceActionBuilder::ABRT_Ignore_Host && \"Host dependence not expected to be ignored.!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2680, __extension__ __PRETTY_FUNCTION__))
2680 "Host dependence not expected to be ignored.!")(static_cast <bool> (RetCode != DeviceActionBuilder::ABRT_Ignore_Host
&& "Host dependence not expected to be ignored.!") ?
void (0) : __assert_fail ("RetCode != DeviceActionBuilder::ABRT_Ignore_Host && \"Host dependence not expected to be ignored.!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2680, __extension__ __PRETTY_FUNCTION__))
;
2681
2682 // Unless the builder was inactive for this action, we have to record the
2683 // offload kind because the host will have to use it.
2684 if (RetCode != DeviceActionBuilder::ABRT_Inactive)
2685 OffloadKind |= SB->getAssociatedOffloadKind();
2686 }
2687
2688 return false;
2689 }
2690
2691 /// Add the offloading top level actions to the provided action list. This
2692 /// function can replace the host action by a bundling action if the
2693 /// programming models allow it.
2694 bool appendTopLevelActions(ActionList &AL, Action *HostAction,
2695 const Arg *InputArg) {
2696 // Get the device actions to be appended.
2697 ActionList OffloadAL;
2698 for (auto *SB : SpecializedBuilders) {
2699 if (!SB->isValid())
2700 continue;
2701 SB->appendTopLevelActions(OffloadAL);
2702 }
2703
2704 // If we can use the bundler, replace the host action by the bundling one in
2705 // the resulting list. Otherwise, just append the device actions.
2706 if (CanUseBundler && !OffloadAL.empty()) {
2707 // Add the host action to the list in order to create the bundling action.
2708 OffloadAL.push_back(HostAction);
2709
2710 // We expect that the host action was just appended to the action list
2711 // before this method was called.
2712 assert(HostAction == AL.back() && "Host action not in the list??")(static_cast <bool> (HostAction == AL.back() &&
"Host action not in the list??") ? void (0) : __assert_fail (
"HostAction == AL.back() && \"Host action not in the list??\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2712, __extension__ __PRETTY_FUNCTION__))
;
2713 HostAction = C.MakeAction<OffloadBundlingJobAction>(OffloadAL);
2714 AL.back() = HostAction;
2715 } else
2716 AL.append(OffloadAL.begin(), OffloadAL.end());
2717
2718 // Propagate to the current host action (if any) the offload information
2719 // associated with the current input.
2720 if (HostAction)
2721 HostAction->propagateHostOffloadInfo(InputArgToOffloadKindMap[InputArg],
2722 /*BoundArch=*/nullptr);
2723 return false;
2724 }
2725
2726 /// Processes the host linker action. This currently consists of replacing it
2727 /// with an offload action if there are device link objects and propagate to
2728 /// the host action all the offload kinds used in the current compilation. The
2729 /// resulting action is returned.
2730 Action *processHostLinkAction(Action *HostAction) {
2731 // Add all the dependences from the device linking actions.
2732 OffloadAction::DeviceDependences DDeps;
2733 for (auto *SB : SpecializedBuilders) {
2734 if (!SB->isValid())
2735 continue;
2736
2737 SB->appendLinkDependences(DDeps);
2738 }
2739
2740 // Calculate all the offload kinds used in the current compilation.
2741 unsigned ActiveOffloadKinds = 0u;
2742 for (auto &I : InputArgToOffloadKindMap)
2743 ActiveOffloadKinds |= I.second;
2744
2745 // If we don't have device dependencies, we don't have to create an offload
2746 // action.
2747 if (DDeps.getActions().empty()) {
2748 // Propagate all the active kinds to host action. Given that it is a link
2749 // action it is assumed to depend on all actions generated so far.
2750 HostAction->propagateHostOffloadInfo(ActiveOffloadKinds,
2751 /*BoundArch=*/nullptr);
2752 return HostAction;
2753 }
2754
2755 // Create the offload action with all dependences. When an offload action
2756 // is created the kinds are propagated to the host action, so we don't have
2757 // to do that explicitly here.
2758 OffloadAction::HostDependence HDep(
2759 *HostAction, *C.getSingleOffloadToolChain<Action::OFK_Host>(),
2760 /*BoundArch*/ nullptr, ActiveOffloadKinds);
2761 return C.MakeAction<OffloadAction>(HDep, DDeps);
2762 }
2763};
2764} // anonymous namespace.
2765
2766void Driver::BuildActions(Compilation &C, DerivedArgList &Args,
2767 const InputList &Inputs, ActionList &Actions) const {
2768 llvm::PrettyStackTraceString CrashInfo("Building compilation actions");
2769
2770 if (!SuppressMissingInputWarning && Inputs.empty()) {
2771 Diag(clang::diag::err_drv_no_input_files);
2772 return;
2773 }
2774
2775 Arg *FinalPhaseArg;
2776 phases::ID FinalPhase = getFinalPhase(Args, &FinalPhaseArg);
2777
2778 if (FinalPhase == phases::Link) {
2779 if (Args.hasArg(options::OPT_emit_llvm))
2780 Diag(clang::diag::err_drv_emit_llvm_link);
2781 if (IsCLMode() && LTOMode != LTOK_None &&
2782 !Args.getLastArgValue(options::OPT_fuse_ld_EQ).equals_lower("lld"))
2783 Diag(clang::diag::err_drv_lto_without_lld);
2784 }
2785
2786 // Reject -Z* at the top level, these options should never have been exposed
2787 // by gcc.
2788 if (Arg *A = Args.getLastArg(options::OPT_Z_Joined))
2789 Diag(clang::diag::err_drv_use_of_Z_option) << A->getAsString(Args);
2790
2791 // Diagnose misuse of /Fo.
2792 if (Arg *A = Args.getLastArg(options::OPT__SLASH_Fo)) {
2793 StringRef V = A->getValue();
2794 if (Inputs.size() > 1 && !V.empty() &&
2795 !llvm::sys::path::is_separator(V.back())) {
2796 // Check whether /Fo tries to name an output file for multiple inputs.
2797 Diag(clang::diag::err_drv_out_file_argument_with_multiple_sources)
2798 << A->getSpelling() << V;
2799 Args.eraseArg(options::OPT__SLASH_Fo);
2800 }
2801 }
2802
2803 // Diagnose misuse of /Fa.
2804 if (Arg *A = Args.getLastArg(options::OPT__SLASH_Fa)) {
2805 StringRef V = A->getValue();
2806 if (Inputs.size() > 1 && !V.empty() &&
2807 !llvm::sys::path::is_separator(V.back())) {
2808 // Check whether /Fa tries to name an asm file for multiple inputs.
2809 Diag(clang::diag::err_drv_out_file_argument_with_multiple_sources)
2810 << A->getSpelling() << V;
2811 Args.eraseArg(options::OPT__SLASH_Fa);
2812 }
2813 }
2814
2815 // Diagnose misuse of /o.
2816 if (Arg *A = Args.getLastArg(options::OPT__SLASH_o)) {
2817 if (A->getValue()[0] == '\0') {
2818 // It has to have a value.
2819 Diag(clang::diag::err_drv_missing_argument) << A->getSpelling() << 1;
2820 Args.eraseArg(options::OPT__SLASH_o);
2821 }
2822 }
2823
2824 // Diagnose unsupported forms of /Yc /Yu. Ignore /Yc/Yu for now if:
2825 // * no filename after it
2826 // * both /Yc and /Yu passed but with different filenames
2827 // * corresponding file not also passed as /FI
2828 Arg *YcArg = Args.getLastArg(options::OPT__SLASH_Yc);
2829 Arg *YuArg = Args.getLastArg(options::OPT__SLASH_Yu);
2830 if (YcArg && YcArg->getValue()[0] == '\0') {
2831 Diag(clang::diag::warn_drv_ycyu_no_arg_clang_cl) << YcArg->getSpelling();
2832 Args.eraseArg(options::OPT__SLASH_Yc);
2833 YcArg = nullptr;
2834 }
2835 if (YuArg && YuArg->getValue()[0] == '\0') {
2836 Diag(clang::diag::warn_drv_ycyu_no_arg_clang_cl) << YuArg->getSpelling();
2837 Args.eraseArg(options::OPT__SLASH_Yu);
2838 YuArg = nullptr;
2839 }
2840 if (YcArg && YuArg && strcmp(YcArg->getValue(), YuArg->getValue()) != 0) {
2841 Diag(clang::diag::warn_drv_ycyu_different_arg_clang_cl);
2842 Args.eraseArg(options::OPT__SLASH_Yc);
2843 Args.eraseArg(options::OPT__SLASH_Yu);
2844 YcArg = YuArg = nullptr;
2845 }
2846 if (YcArg || YuArg) {
2847 StringRef Val = YcArg ? YcArg->getValue() : YuArg->getValue();
2848 bool FoundMatchingInclude = false;
2849 for (const Arg *Inc : Args.filtered(options::OPT_include)) {
2850 // FIXME: Do case-insensitive matching and consider / and \ as equal.
2851 if (Inc->getValue() == Val)
2852 FoundMatchingInclude = true;
2853 }
2854 if (!FoundMatchingInclude) {
2855 Diag(clang::diag::warn_drv_ycyu_no_fi_arg_clang_cl)
2856 << (YcArg ? YcArg : YuArg)->getSpelling();
2857 Args.eraseArg(options::OPT__SLASH_Yc);
2858 Args.eraseArg(options::OPT__SLASH_Yu);
2859 YcArg = YuArg = nullptr;
2860 }
2861 }
2862 if (YcArg && Inputs.size() > 1) {
2863 Diag(clang::diag::warn_drv_yc_multiple_inputs_clang_cl);
2864 Args.eraseArg(options::OPT__SLASH_Yc);
2865 YcArg = nullptr;
2866 }
2867 if (Args.hasArg(options::OPT__SLASH_Y_)) {
2868 // /Y- disables all pch handling. Rather than check for it everywhere,
2869 // just remove clang-cl pch-related flags here.
2870 Args.eraseArg(options::OPT__SLASH_Fp);
2871 Args.eraseArg(options::OPT__SLASH_Yc);
2872 Args.eraseArg(options::OPT__SLASH_Yu);
2873 YcArg = YuArg = nullptr;
2874 }
2875
2876 // Builder to be used to build offloading actions.
2877 OffloadingActionBuilder OffloadBuilder(C, Args, Inputs);
2878
2879 // Construct the actions to perform.
2880 ActionList LinkerInputs;
2881
2882 llvm::SmallVector<phases::ID, phases::MaxNumberOfPhases> PL;
2883 for (auto &I : Inputs) {
2884 types::ID InputType = I.first;
2885 const Arg *InputArg = I.second;
2886
2887 PL.clear();
2888 types::getCompilationPhases(InputType, PL);
2889
2890 // If the first step comes after the final phase we are doing as part of
2891 // this compilation, warn the user about it.
2892 phases::ID InitialPhase = PL[0];
2893 if (InitialPhase > FinalPhase) {
2894 // Claim here to avoid the more general unused warning.
2895 InputArg->claim();
2896
2897 // Suppress all unused style warnings with -Qunused-arguments
2898 if (Args.hasArg(options::OPT_Qunused_arguments))
2899 continue;
2900
2901 // Special case when final phase determined by binary name, rather than
2902 // by a command-line argument with a corresponding Arg.
2903 if (CCCIsCPP())
2904 Diag(clang::diag::warn_drv_input_file_unused_by_cpp)
2905 << InputArg->getAsString(Args) << getPhaseName(InitialPhase);
2906 // Special case '-E' warning on a previously preprocessed file to make
2907 // more sense.
2908 else if (InitialPhase == phases::Compile &&
2909 FinalPhase == phases::Preprocess &&
2910 getPreprocessedType(InputType) == types::TY_INVALID)
2911 Diag(clang::diag::warn_drv_preprocessed_input_file_unused)
2912 << InputArg->getAsString(Args) << !!FinalPhaseArg
2913 << (FinalPhaseArg ? FinalPhaseArg->getOption().getName() : "");
2914 else
2915 Diag(clang::diag::warn_drv_input_file_unused)
2916 << InputArg->getAsString(Args) << getPhaseName(InitialPhase)
2917 << !!FinalPhaseArg
2918 << (FinalPhaseArg ? FinalPhaseArg->getOption().getName() : "");
2919 continue;
2920 }
2921
2922 if (YcArg) {
2923 // Add a separate precompile phase for the compile phase.
2924 if (FinalPhase >= phases::Compile) {
2925 const types::ID HeaderType = lookupHeaderTypeForSourceType(InputType);
2926 llvm::SmallVector<phases::ID, phases::MaxNumberOfPhases> PCHPL;
2927 types::getCompilationPhases(HeaderType, PCHPL);
2928 Arg *PchInputArg = MakeInputArg(Args, *Opts, YcArg->getValue());
2929
2930 // Build the pipeline for the pch file.
2931 Action *ClangClPch =
2932 C.MakeAction<InputAction>(*PchInputArg, HeaderType);
2933 for (phases::ID Phase : PCHPL)
2934 ClangClPch = ConstructPhaseAction(C, Args, Phase, ClangClPch);
2935 assert(ClangClPch)(static_cast <bool> (ClangClPch) ? void (0) : __assert_fail
("ClangClPch", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2935, __extension__ __PRETTY_FUNCTION__))
;
2936 Actions.push_back(ClangClPch);
2937 // The driver currently exits after the first failed command. This
2938 // relies on that behavior, to make sure if the pch generation fails,
2939 // the main compilation won't run.
2940 }
2941 }
2942
2943 // Build the pipeline for this file.
2944 Action *Current = C.MakeAction<InputAction>(*InputArg, InputType);
2945
2946 // Use the current host action in any of the offloading actions, if
2947 // required.
2948 if (OffloadBuilder.addHostDependenceToDeviceActions(Current, InputArg))
2949 break;
2950
2951 for (SmallVectorImpl<phases::ID>::iterator i = PL.begin(), e = PL.end();
2952 i != e; ++i) {
2953 phases::ID Phase = *i;
2954
2955 // We are done if this step is past what the user requested.
2956 if (Phase > FinalPhase)
2957 break;
2958
2959 // Add any offload action the host action depends on.
2960 Current = OffloadBuilder.addDeviceDependencesToHostAction(
2961 Current, InputArg, Phase, FinalPhase, PL);
2962 if (!Current)
2963 break;
2964
2965 // Queue linker inputs.
2966 if (Phase == phases::Link) {
2967 assert((i + 1) == e && "linking must be final compilation step.")(static_cast <bool> ((i + 1) == e && "linking must be final compilation step."
) ? void (0) : __assert_fail ("(i + 1) == e && \"linking must be final compilation step.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 2967, __extension__ __PRETTY_FUNCTION__))
;
2968 LinkerInputs.push_back(Current);
2969 Current = nullptr;
2970 break;
2971 }
2972
2973 // Otherwise construct the appropriate action.
2974 auto *NewCurrent = ConstructPhaseAction(C, Args, Phase, Current);
2975
2976 // We didn't create a new action, so we will just move to the next phase.
2977 if (NewCurrent == Current)
2978 continue;
2979
2980 Current = NewCurrent;
2981
2982 // Use the current host action in any of the offloading actions, if
2983 // required.
2984 if (OffloadBuilder.addHostDependenceToDeviceActions(Current, InputArg))
2985 break;
2986
2987 if (Current->getType() == types::TY_Nothing)
2988 break;
2989 }
2990
2991 // If we ended with something, add to the output list.
2992 if (Current)
2993 Actions.push_back(Current);
2994
2995 // Add any top level actions generated for offloading.
2996 OffloadBuilder.appendTopLevelActions(Actions, Current, InputArg);
2997 }
2998
2999 // Add a link action if necessary.
3000 if (!LinkerInputs.empty()) {
3001 Action *LA = C.MakeAction<LinkJobAction>(LinkerInputs, types::TY_Image);
3002 LA = OffloadBuilder.processHostLinkAction(LA);
3003 Actions.push_back(LA);
3004 }
3005
3006 // If we are linking, claim any options which are obviously only used for
3007 // compilation.
3008 if (FinalPhase == phases::Link && PL.size() == 1) {
3009 Args.ClaimAllArgs(options::OPT_CompileOnly_Group);
3010 Args.ClaimAllArgs(options::OPT_cl_compile_Group);
3011 }
3012
3013 // Claim ignored clang-cl options.
3014 Args.ClaimAllArgs(options::OPT_cl_ignored_Group);
3015
3016 // Claim --cuda-host-only and --cuda-compile-host-device, which may be passed
3017 // to non-CUDA compilations and should not trigger warnings there.
3018 Args.ClaimAllArgs(options::OPT_cuda_host_only);
3019 Args.ClaimAllArgs(options::OPT_cuda_compile_host_device);
3020}
3021
3022Action *Driver::ConstructPhaseAction(
3023 Compilation &C, const ArgList &Args, phases::ID Phase, Action *Input,
3024 Action::OffloadKind TargetDeviceOffloadKind) const {
3025 llvm::PrettyStackTraceString CrashInfo("Constructing phase actions");
3026
3027 // Some types skip the assembler phase (e.g., llvm-bc), but we can't
3028 // encode this in the steps because the intermediate type depends on
3029 // arguments. Just special case here.
3030 if (Phase == phases::Assemble && Input->getType() != types::TY_PP_Asm)
3031 return Input;
3032
3033 // Build the appropriate action.
3034 switch (Phase) {
3035 case phases::Link:
3036 llvm_unreachable("link action invalid here.")::llvm::llvm_unreachable_internal("link action invalid here."
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 3036)
;
3037 case phases::Preprocess: {
3038 types::ID OutputTy;
3039 // -{M, MM} alter the output type.
3040 if (Args.hasArg(options::OPT_M, options::OPT_MM)) {
3041 OutputTy = types::TY_Dependencies;
3042 } else {
3043 OutputTy = Input->getType();
3044 if (!Args.hasFlag(options::OPT_frewrite_includes,
3045 options::OPT_fno_rewrite_includes, false) &&
3046 !Args.hasFlag(options::OPT_frewrite_imports,
3047 options::OPT_fno_rewrite_imports, false) &&
3048 !CCGenDiagnostics)
3049 OutputTy = types::getPreprocessedType(OutputTy);
3050 assert(OutputTy != types::TY_INVALID &&(static_cast <bool> (OutputTy != types::TY_INVALID &&
"Cannot preprocess this input type!") ? void (0) : __assert_fail
("OutputTy != types::TY_INVALID && \"Cannot preprocess this input type!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 3051, __extension__ __PRETTY_FUNCTION__))
3051 "Cannot preprocess this input type!")(static_cast <bool> (OutputTy != types::TY_INVALID &&
"Cannot preprocess this input type!") ? void (0) : __assert_fail
("OutputTy != types::TY_INVALID && \"Cannot preprocess this input type!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 3051, __extension__ __PRETTY_FUNCTION__))
;
3052 }
3053 return C.MakeAction<PreprocessJobAction>(Input, OutputTy);
3054 }
3055 case phases::Precompile: {
3056 types::ID OutputTy = getPrecompiledType(Input->getType());
3057 assert(OutputTy != types::TY_INVALID &&(static_cast <bool> (OutputTy != types::TY_INVALID &&
"Cannot precompile this input type!") ? void (0) : __assert_fail
("OutputTy != types::TY_INVALID && \"Cannot precompile this input type!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 3058, __extension__ __PRETTY_FUNCTION__))
3058 "Cannot precompile this input type!")(static_cast <bool> (OutputTy != types::TY_INVALID &&
"Cannot precompile this input type!") ? void (0) : __assert_fail
("OutputTy != types::TY_INVALID && \"Cannot precompile this input type!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 3058, __extension__ __PRETTY_FUNCTION__))
;
3059 if (Args.hasArg(options::OPT_fsyntax_only)) {
3060 // Syntax checks should not emit a PCH file
3061 OutputTy = types::TY_Nothing;
3062 }
3063 return C.MakeAction<PrecompileJobAction>(Input, OutputTy);
3064 }
3065 case phases::Compile: {
3066 if (Args.hasArg(options::OPT_fsyntax_only))
3067 return C.MakeAction<CompileJobAction>(Input, types::TY_Nothing);
3068 if (Args.hasArg(options::OPT_rewrite_objc))
3069 return C.MakeAction<CompileJobAction>(Input, types::TY_RewrittenObjC);
3070 if (Args.hasArg(options::OPT_rewrite_legacy_objc))
3071 return C.MakeAction<CompileJobAction>(Input,
3072 types::TY_RewrittenLegacyObjC);
3073 if (Args.hasArg(options::OPT__analyze, options::OPT__analyze_auto))
3074 return C.MakeAction<AnalyzeJobAction>(Input, types::TY_Plist);
3075 if (Args.hasArg(options::OPT__migrate))
3076 return C.MakeAction<MigrateJobAction>(Input, types::TY_Remap);
3077 if (Args.hasArg(options::OPT_emit_ast))
3078 return C.MakeAction<CompileJobAction>(Input, types::TY_AST);
3079 if (Args.hasArg(options::OPT_module_file_info))
3080 return C.MakeAction<CompileJobAction>(Input, types::TY_ModuleFile);
3081 if (Args.hasArg(options::OPT_verify_pch))
3082 return C.MakeAction<VerifyPCHJobAction>(Input, types::TY_Nothing);
3083 return C.MakeAction<CompileJobAction>(Input, types::TY_LLVM_BC);
3084 }
3085 case phases::Backend: {
3086 if (isUsingLTO() && TargetDeviceOffloadKind == Action::OFK_None) {
3087 types::ID Output =
3088 Args.hasArg(options::OPT_S) ? types::TY_LTO_IR : types::TY_LTO_BC;
3089 return C.MakeAction<BackendJobAction>(Input, Output);
3090 }
3091 if (Args.hasArg(options::OPT_emit_llvm)) {
3092 types::ID Output =
3093 Args.hasArg(options::OPT_S) ? types::TY_LLVM_IR : types::TY_LLVM_BC;
3094 return C.MakeAction<BackendJobAction>(Input, Output);
3095 }
3096 return C.MakeAction<BackendJobAction>(Input, types::TY_PP_Asm);
3097 }
3098 case phases::Assemble:
3099 return C.MakeAction<AssembleJobAction>(std::move(Input), types::TY_Object);
3100 }
3101
3102 llvm_unreachable("invalid phase in ConstructPhaseAction")::llvm::llvm_unreachable_internal("invalid phase in ConstructPhaseAction"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 3102)
;
3103}
3104
3105void Driver::BuildJobs(Compilation &C) const {
3106 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
3107
3108 Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o);
3109
3110 // It is an error to provide a -o option if we are making multiple output
3111 // files.
3112 if (FinalOutput) {
3113 unsigned NumOutputs = 0;
3114 for (const Action *A : C.getActions())
3115 if (A->getType() != types::TY_Nothing)
3116 ++NumOutputs;
3117
3118 if (NumOutputs > 1) {
3119 Diag(clang::diag::err_drv_output_argument_with_multiple_files);
3120 FinalOutput = nullptr;
3121 }
3122 }
3123
3124 // Collect the list of architectures.
3125 llvm::StringSet<> ArchNames;
3126 if (C.getDefaultToolChain().getTriple().isOSBinFormatMachO())
3127 for (const Arg *A : C.getArgs())
3128 if (A->getOption().matches(options::OPT_arch))
3129 ArchNames.insert(A->getValue());
3130
3131 // Set of (Action, canonical ToolChain triple) pairs we've built jobs for.
3132 std::map<std::pair<const Action *, std::string>, InputInfo> CachedResults;
3133 for (Action *A : C.getActions()) {
3134 // If we are linking an image for multiple archs then the linker wants
3135 // -arch_multiple and -final_output <final image name>. Unfortunately, this
3136 // doesn't fit in cleanly because we have to pass this information down.
3137 //
3138 // FIXME: This is a hack; find a cleaner way to integrate this into the
3139 // process.
3140 const char *LinkingOutput = nullptr;
3141 if (isa<LipoJobAction>(A)) {
3142 if (FinalOutput)
3143 LinkingOutput = FinalOutput->getValue();
3144 else
3145 LinkingOutput = getDefaultImageName();
3146 }
3147
3148 BuildJobsForAction(C, A, &C.getDefaultToolChain(),
3149 /*BoundArch*/ StringRef(),
3150 /*AtTopLevel*/ true,
3151 /*MultipleArchs*/ ArchNames.size() > 1,
3152 /*LinkingOutput*/ LinkingOutput, CachedResults,
3153 /*TargetDeviceOffloadKind*/ Action::OFK_None);
3154 }
3155
3156 // If the user passed -Qunused-arguments or there were errors, don't warn
3157 // about any unused arguments.
3158 if (Diags.hasErrorOccurred() ||
3159 C.getArgs().hasArg(options::OPT_Qunused_arguments))
3160 return;
3161
3162 // Claim -### here.
3163 (void)C.getArgs().hasArg(options::OPT__HASH_HASH_HASH);
3164
3165 // Claim --driver-mode, --rsp-quoting, it was handled earlier.
3166 (void)C.getArgs().hasArg(options::OPT_driver_mode);
3167 (void)C.getArgs().hasArg(options::OPT_rsp_quoting);
3168
3169 for (Arg *A : C.getArgs()) {
3170 // FIXME: It would be nice to be able to send the argument to the
3171 // DiagnosticsEngine, so that extra values, position, and so on could be
3172 // printed.
3173 if (!A->isClaimed()) {
3174 if (A->getOption().hasFlag(options::NoArgumentUnused))
3175 continue;
3176
3177 // Suppress the warning automatically if this is just a flag, and it is an
3178 // instance of an argument we already claimed.
3179 const Option &Opt = A->getOption();
3180 if (Opt.getKind() == Option::FlagClass) {
3181 bool DuplicateClaimed = false;
3182
3183 for (const Arg *AA : C.getArgs().filtered(&Opt)) {
3184 if (AA->isClaimed()) {
3185 DuplicateClaimed = true;
3186 break;
3187 }
3188 }
3189
3190 if (DuplicateClaimed)
3191 continue;
3192 }
3193
3194 // In clang-cl, don't mention unknown arguments here since they have
3195 // already been warned about.
3196 if (!IsCLMode() || !A->getOption().matches(options::OPT_UNKNOWN))
3197 Diag(clang::diag::warn_drv_unused_argument)
3198 << A->getAsString(C.getArgs());
3199 }
3200 }
3201}
3202
3203namespace {
3204/// Utility class to control the collapse of dependent actions and select the
3205/// tools accordingly.
3206class ToolSelector final {
3207 /// The tool chain this selector refers to.
3208 const ToolChain &TC;
3209
3210 /// The compilation this selector refers to.
3211 const Compilation &C;
3212
3213 /// The base action this selector refers to.
3214 const JobAction *BaseAction;
3215
3216 /// Set to true if the current toolchain refers to host actions.
3217 bool IsHostSelector;
3218
3219 /// Set to true if save-temps and embed-bitcode functionalities are active.
3220 bool SaveTemps;
3221 bool EmbedBitcode;
3222
3223 /// Get previous dependent action or null if that does not exist. If
3224 /// \a CanBeCollapsed is false, that action must be legal to collapse or
3225 /// null will be returned.
3226 const JobAction *getPrevDependentAction(const ActionList &Inputs,
3227 ActionList &SavedOffloadAction,
3228 bool CanBeCollapsed = true) {
3229 // An option can be collapsed only if it has a single input.
3230 if (Inputs.size() != 1)
3231 return nullptr;
3232
3233 Action *CurAction = *Inputs.begin();
3234 if (CanBeCollapsed &&
3235 !CurAction->isCollapsingWithNextDependentActionLegal())
3236 return nullptr;
3237
3238 // If the input action is an offload action. Look through it and save any
3239 // offload action that can be dropped in the event of a collapse.
3240 if (auto *OA = dyn_cast<OffloadAction>(CurAction)) {
3241 // If the dependent action is a device action, we will attempt to collapse
3242 // only with other device actions. Otherwise, we would do the same but
3243 // with host actions only.
3244 if (!IsHostSelector) {
3245 if (OA->hasSingleDeviceDependence(/*DoNotConsiderHostActions=*/true)) {
3246 CurAction =
3247 OA->getSingleDeviceDependence(/*DoNotConsiderHostActions=*/true);
3248 if (CanBeCollapsed &&
3249 !CurAction->isCollapsingWithNextDependentActionLegal())
3250 return nullptr;
3251 SavedOffloadAction.push_back(OA);
3252 return dyn_cast<JobAction>(CurAction);
3253 }
3254 } else if (OA->hasHostDependence()) {
3255 CurAction = OA->getHostDependence();
3256 if (CanBeCollapsed &&
3257 !CurAction->isCollapsingWithNextDependentActionLegal())
3258 return nullptr;
3259 SavedOffloadAction.push_back(OA);
3260 return dyn_cast<JobAction>(CurAction);
3261 }
3262 return nullptr;
3263 }
3264
3265 return dyn_cast<JobAction>(CurAction);
3266 }
3267
3268 /// Return true if an assemble action can be collapsed.
3269 bool canCollapseAssembleAction() const {
3270 return TC.useIntegratedAs() && !SaveTemps &&
3271 !C.getArgs().hasArg(options::OPT_via_file_asm) &&
3272 !C.getArgs().hasArg(options::OPT__SLASH_FA) &&
3273 !C.getArgs().hasArg(options::OPT__SLASH_Fa);
3274 }
3275
3276 /// Return true if a preprocessor action can be collapsed.
3277 bool canCollapsePreprocessorAction() const {
3278 return !C.getArgs().hasArg(options::OPT_no_integrated_cpp) &&
3279 !C.getArgs().hasArg(options::OPT_traditional_cpp) && !SaveTemps &&
3280 !C.getArgs().hasArg(options::OPT_rewrite_objc);
3281 }
3282
3283 /// Struct that relates an action with the offload actions that would be
3284 /// collapsed with it.
3285 struct JobActionInfo final {
3286 /// The action this info refers to.
3287 const JobAction *JA = nullptr;
3288 /// The offload actions we need to take care off if this action is
3289 /// collapsed.
3290 ActionList SavedOffloadAction;
3291 };
3292
3293 /// Append collapsed offload actions from the give nnumber of elements in the
3294 /// action info array.
3295 static void AppendCollapsedOffloadAction(ActionList &CollapsedOffloadAction,
3296 ArrayRef<JobActionInfo> &ActionInfo,
3297 unsigned ElementNum) {
3298 assert(ElementNum <= ActionInfo.size() && "Invalid number of elements.")(static_cast <bool> (ElementNum <= ActionInfo.size()
&& "Invalid number of elements.") ? void (0) : __assert_fail
("ElementNum <= ActionInfo.size() && \"Invalid number of elements.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 3298, __extension__ __PRETTY_FUNCTION__))
;
3299 for (unsigned I = 0; I < ElementNum; ++I)
3300 CollapsedOffloadAction.append(ActionInfo[I].SavedOffloadAction.begin(),
3301 ActionInfo[I].SavedOffloadAction.end());
3302 }
3303
3304 /// Functions that attempt to perform the combining. They detect if that is
3305 /// legal, and if so they update the inputs \a Inputs and the offload action
3306 /// that were collapsed in \a CollapsedOffloadAction. A tool that deals with
3307 /// the combined action is returned. If the combining is not legal or if the
3308 /// tool does not exist, null is returned.
3309 /// Currently three kinds of collapsing are supported:
3310 /// - Assemble + Backend + Compile;
3311 /// - Assemble + Backend ;
3312 /// - Backend + Compile.
3313 const Tool *
3314 combineAssembleBackendCompile(ArrayRef<JobActionInfo> ActionInfo,
3315 const ActionList *&Inputs,
3316 ActionList &CollapsedOffloadAction) {
3317 if (ActionInfo.size() < 3 || !canCollapseAssembleAction())
3318 return nullptr;
3319 auto *AJ = dyn_cast<AssembleJobAction>(ActionInfo[0].JA);
3320 auto *BJ = dyn_cast<BackendJobAction>(ActionInfo[1].JA);
3321 auto *CJ = dyn_cast<CompileJobAction>(ActionInfo[2].JA);
3322 if (!AJ || !BJ || !CJ)
3323 return nullptr;
3324
3325 // Get compiler tool.
3326 const Tool *T = TC.SelectTool(*CJ);
3327 if (!T)
3328 return nullptr;
3329
3330 // When using -fembed-bitcode, it is required to have the same tool (clang)
3331 // for both CompilerJA and BackendJA. Otherwise, combine two stages.
3332 if (EmbedBitcode) {
3333 const Tool *BT = TC.SelectTool(*BJ);
3334 if (BT == T)
3335 return nullptr;
3336 }
3337
3338 if (!T->hasIntegratedAssembler())
3339 return nullptr;
3340
3341 Inputs = &CJ->getInputs();
3342 AppendCollapsedOffloadAction(CollapsedOffloadAction, ActionInfo,
3343 /*NumElements=*/3);
3344 return T;
3345 }
3346 const Tool *combineAssembleBackend(ArrayRef<JobActionInfo> ActionInfo,
3347 const ActionList *&Inputs,
3348 ActionList &CollapsedOffloadAction) {
3349 if (ActionInfo.size() < 2 || !canCollapseAssembleAction())
3350 return nullptr;
3351 auto *AJ = dyn_cast<AssembleJobAction>(ActionInfo[0].JA);
3352 auto *BJ = dyn_cast<BackendJobAction>(ActionInfo[1].JA);
3353 if (!AJ || !BJ)
3354 return nullptr;
3355
3356 // Retrieve the compile job, backend action must always be preceded by one.
3357 ActionList CompileJobOffloadActions;
3358 auto *CJ = getPrevDependentAction(BJ->getInputs(), CompileJobOffloadActions,
3359 /*CanBeCollapsed=*/false);
3360 if (!AJ || !BJ || !CJ)
3361 return nullptr;
3362
3363 assert(isa<CompileJobAction>(CJ) &&(static_cast <bool> (isa<CompileJobAction>(CJ) &&
"Expecting compile job preceding backend job.") ? void (0) :
__assert_fail ("isa<CompileJobAction>(CJ) && \"Expecting compile job preceding backend job.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 3364, __extension__ __PRETTY_FUNCTION__))
3364 "Expecting compile job preceding backend job.")(static_cast <bool> (isa<CompileJobAction>(CJ) &&
"Expecting compile job preceding backend job.") ? void (0) :
__assert_fail ("isa<CompileJobAction>(CJ) && \"Expecting compile job preceding backend job.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 3364, __extension__ __PRETTY_FUNCTION__))
;
3365
3366 // Get compiler tool.
3367 const Tool *T = TC.SelectTool(*CJ);
3368 if (!T)
3369 return nullptr;
3370
3371 if (!T->hasIntegratedAssembler())
3372 return nullptr;
3373
3374 Inputs = &BJ->getInputs();
3375 AppendCollapsedOffloadAction(CollapsedOffloadAction, ActionInfo,
3376 /*NumElements=*/2);
3377 return T;
3378 }
3379 const Tool *combineBackendCompile(ArrayRef<JobActionInfo> ActionInfo,
3380 const ActionList *&Inputs,
3381 ActionList &CollapsedOffloadAction) {
3382 if (ActionInfo.size() < 2 || !canCollapsePreprocessorAction())
3383 return nullptr;
3384 auto *BJ = dyn_cast<BackendJobAction>(ActionInfo[0].JA);
3385 auto *CJ = dyn_cast<CompileJobAction>(ActionInfo[1].JA);
3386 if (!BJ || !CJ)
3387 return nullptr;
3388
3389 // Get compiler tool.
3390 const Tool *T = TC.SelectTool(*CJ);
3391 if (!T)
3392 return nullptr;
3393
3394 if (T->canEmitIR() && (SaveTemps || EmbedBitcode))
3395 return nullptr;
3396
3397 Inputs = &CJ->getInputs();
3398 AppendCollapsedOffloadAction(CollapsedOffloadAction, ActionInfo,
3399 /*NumElements=*/2);
3400 return T;
3401 }
3402
3403 /// Updates the inputs if the obtained tool supports combining with
3404 /// preprocessor action, and the current input is indeed a preprocessor
3405 /// action. If combining results in the collapse of offloading actions, those
3406 /// are appended to \a CollapsedOffloadAction.
3407 void combineWithPreprocessor(const Tool *T, const ActionList *&Inputs,
3408 ActionList &CollapsedOffloadAction) {
3409 if (!T || !canCollapsePreprocessorAction() || !T->hasIntegratedCPP())
3410 return;
3411
3412 // Attempt to get a preprocessor action dependence.
3413 ActionList PreprocessJobOffloadActions;
3414 auto *PJ = getPrevDependentAction(*Inputs, PreprocessJobOffloadActions);
3415 if (!PJ || !isa<PreprocessJobAction>(PJ))
3416 return;
3417
3418 // This is legal to combine. Append any offload action we found and set the
3419 // current inputs to preprocessor inputs.
3420 CollapsedOffloadAction.append(PreprocessJobOffloadActions.begin(),
3421 PreprocessJobOffloadActions.end());
3422 Inputs = &PJ->getInputs();
3423 }
3424
3425public:
3426 ToolSelector(const JobAction *BaseAction, const ToolChain &TC,
3427 const Compilation &C, bool SaveTemps, bool EmbedBitcode)
3428 : TC(TC), C(C), BaseAction(BaseAction), SaveTemps(SaveTemps),
3429 EmbedBitcode(EmbedBitcode) {
3430 assert(BaseAction && "Invalid base action.")(static_cast <bool> (BaseAction && "Invalid base action."
) ? void (0) : __assert_fail ("BaseAction && \"Invalid base action.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 3430, __extension__ __PRETTY_FUNCTION__))
;
3431 IsHostSelector = BaseAction->getOffloadingDeviceKind() == Action::OFK_None;
3432 }
3433
3434 /// Check if a chain of actions can be combined and return the tool that can
3435 /// handle the combination of actions. The pointer to the current inputs \a
3436 /// Inputs and the list of offload actions \a CollapsedOffloadActions
3437 /// connected to collapsed actions are updated accordingly. The latter enables
3438 /// the caller of the selector to process them afterwards instead of just
3439 /// dropping them. If no suitable tool is found, null will be returned.
3440 const Tool *getTool(const ActionList *&Inputs,
3441 ActionList &CollapsedOffloadAction) {
3442 //
3443 // Get the largest chain of actions that we could combine.
3444 //
3445
3446 SmallVector<JobActionInfo, 5> ActionChain(1);
3447 ActionChain.back().JA = BaseAction;
3448 while (ActionChain.back().JA) {
3449 const Action *CurAction = ActionChain.back().JA;
3450
3451 // Grow the chain by one element.
3452 ActionChain.resize(ActionChain.size() + 1);
3453 JobActionInfo &AI = ActionChain.back();
3454
3455 // Attempt to fill it with the
3456 AI.JA =
3457 getPrevDependentAction(CurAction->getInputs(), AI.SavedOffloadAction);
3458 }
3459
3460 // Pop the last action info as it could not be filled.
3461 ActionChain.pop_back();
3462
3463 //
3464 // Attempt to combine actions. If all combining attempts failed, just return
3465 // the tool of the provided action. At the end we attempt to combine the
3466 // action with any preprocessor action it may depend on.
3467 //
3468
3469 const Tool *T = combineAssembleBackendCompile(ActionChain, Inputs,
3470 CollapsedOffloadAction);
3471 if (!T)
3472 T = combineAssembleBackend(ActionChain, Inputs, CollapsedOffloadAction);
3473 if (!T)
3474 T = combineBackendCompile(ActionChain, Inputs, CollapsedOffloadAction);
3475 if (!T) {
3476 Inputs = &BaseAction->getInputs();
3477 T = TC.SelectTool(*BaseAction);
3478 }
3479
3480 combineWithPreprocessor(T, Inputs, CollapsedOffloadAction);
3481 return T;
3482 }
3483};
3484}
3485
3486/// Return a string that uniquely identifies the result of a job. The bound arch
3487/// is not necessarily represented in the toolchain's triple -- for example,
3488/// armv7 and armv7s both map to the same triple -- so we need both in our map.
3489/// Also, we need to add the offloading device kind, as the same tool chain can
3490/// be used for host and device for some programming models, e.g. OpenMP.
3491static std::string GetTriplePlusArchString(const ToolChain *TC,
3492 StringRef BoundArch,
3493 Action::OffloadKind OffloadKind) {
3494 std::string TriplePlusArch = TC->getTriple().normalize();
3495 if (!BoundArch.empty()) {
3496 TriplePlusArch += "-";
3497 TriplePlusArch += BoundArch;
3498 }
3499 TriplePlusArch += "-";
3500 TriplePlusArch += Action::GetOffloadKindName(OffloadKind);
3501 return TriplePlusArch;
3502}
3503
3504InputInfo Driver::BuildJobsForAction(
3505 Compilation &C, const Action *A, const ToolChain *TC, StringRef BoundArch,
3506 bool AtTopLevel, bool MultipleArchs, const char *LinkingOutput,
3507 std::map<std::pair<const Action *, std::string>, InputInfo> &CachedResults,
3508 Action::OffloadKind TargetDeviceOffloadKind) const {
3509 std::pair<const Action *, std::string> ActionTC = {
3510 A, GetTriplePlusArchString(TC, BoundArch, TargetDeviceOffloadKind)};
3511 auto CachedResult = CachedResults.find(ActionTC);
3512 if (CachedResult != CachedResults.end()) {
3513 return CachedResult->second;
3514 }
3515 InputInfo Result = BuildJobsForActionNoCache(
3516 C, A, TC, BoundArch, AtTopLevel, MultipleArchs, LinkingOutput,
3517 CachedResults, TargetDeviceOffloadKind);
3518 CachedResults[ActionTC] = Result;
3519 return Result;
3520}
3521
3522InputInfo Driver::BuildJobsForActionNoCache(
3523 Compilation &C, const Action *A, const ToolChain *TC, StringRef BoundArch,
3524 bool AtTopLevel, bool MultipleArchs, const char *LinkingOutput,
3525 std::map<std::pair<const Action *, std::string>, InputInfo> &CachedResults,
3526 Action::OffloadKind TargetDeviceOffloadKind) const {
3527 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
3528
3529 InputInfoList OffloadDependencesInputInfo;
3530 bool BuildingForOffloadDevice = TargetDeviceOffloadKind != Action::OFK_None;
3531 if (const OffloadAction *OA = dyn_cast<OffloadAction>(A)) {
3532 // The 'Darwin' toolchain is initialized only when its arguments are
3533 // computed. Get the default arguments for OFK_None to ensure that
3534 // initialization is performed before processing the offload action.
3535 // FIXME: Remove when darwin's toolchain is initialized during construction.
3536 C.getArgsForToolChain(TC, BoundArch, Action::OFK_None);
3537
3538 // The offload action is expected to be used in four different situations.
3539 //
3540 // a) Set a toolchain/architecture/kind for a host action:
3541 // Host Action 1 -> OffloadAction -> Host Action 2
3542 //
3543 // b) Set a toolchain/architecture/kind for a device action;
3544 // Device Action 1 -> OffloadAction -> Device Action 2
3545 //
3546 // c) Specify a device dependence to a host action;
3547 // Device Action 1 _
3548 // \
3549 // Host Action 1 ---> OffloadAction -> Host Action 2
3550 //
3551 // d) Specify a host dependence to a device action.
3552 // Host Action 1 _
3553 // \
3554 // Device Action 1 ---> OffloadAction -> Device Action 2
3555 //
3556 // For a) and b), we just return the job generated for the dependence. For
3557 // c) and d) we override the current action with the host/device dependence
3558 // if the current toolchain is host/device and set the offload dependences
3559 // info with the jobs obtained from the device/host dependence(s).
3560
3561 // If there is a single device option, just generate the job for it.
3562 if (OA->hasSingleDeviceDependence()) {
3563 InputInfo DevA;
3564 OA->doOnEachDeviceDependence([&](Action *DepA, const ToolChain *DepTC,
3565 const char *DepBoundArch) {
3566 DevA =
3567 BuildJobsForAction(C, DepA, DepTC, DepBoundArch, AtTopLevel,
3568 /*MultipleArchs*/ !!DepBoundArch, LinkingOutput,
3569 CachedResults, DepA->getOffloadingDeviceKind());
3570 });
3571 return DevA;
3572 }
3573
3574 // If 'Action 2' is host, we generate jobs for the device dependences and
3575 // override the current action with the host dependence. Otherwise, we
3576 // generate the host dependences and override the action with the device
3577 // dependence. The dependences can't therefore be a top-level action.
3578 OA->doOnEachDependence(
3579 /*IsHostDependence=*/BuildingForOffloadDevice,
3580 [&](Action *DepA, const ToolChain *DepTC, const char *DepBoundArch) {
3581 OffloadDependencesInputInfo.push_back(BuildJobsForAction(
3582 C, DepA, DepTC, DepBoundArch, /*AtTopLevel=*/false,
3583 /*MultipleArchs*/ !!DepBoundArch, LinkingOutput, CachedResults,
3584 DepA->getOffloadingDeviceKind()));
3585 });
3586
3587 A = BuildingForOffloadDevice
3588 ? OA->getSingleDeviceDependence(/*DoNotConsiderHostActions=*/true)
3589 : OA->getHostDependence();
3590 }
3591
3592 if (const InputAction *IA = dyn_cast<InputAction>(A)) {
3593 // FIXME: It would be nice to not claim this here; maybe the old scheme of
3594 // just using Args was better?
3595 const Arg &Input = IA->getInputArg();
3596 Input.claim();
3597 if (Input.getOption().matches(options::OPT_INPUT)) {
3598 const char *Name = Input.getValue();
3599 return InputInfo(A, Name, /* BaseInput = */ Name);
3600 }
3601 return InputInfo(A, &Input, /* BaseInput = */ "");
3602 }
3603
3604 if (const BindArchAction *BAA = dyn_cast<BindArchAction>(A)) {
3605 const ToolChain *TC;
3606 StringRef ArchName = BAA->getArchName();
3607
3608 if (!ArchName.empty())
3609 TC = &getToolChain(C.getArgs(),
3610 computeTargetTriple(*this, DefaultTargetTriple,
3611 C.getArgs(), ArchName));
3612 else
3613 TC = &C.getDefaultToolChain();
3614
3615 return BuildJobsForAction(C, *BAA->input_begin(), TC, ArchName, AtTopLevel,
3616 MultipleArchs, LinkingOutput, CachedResults,
3617 TargetDeviceOffloadKind);
3618 }
3619
3620
3621 const ActionList *Inputs = &A->getInputs();
3622
3623 const JobAction *JA = cast<JobAction>(A);
3624 ActionList CollapsedOffloadActions;
3625
3626 ToolSelector TS(JA, *TC, C, isSaveTempsEnabled(),
3627 embedBitcodeInObject() && !isUsingLTO());
3628 const Tool *T = TS.getTool(Inputs, CollapsedOffloadActions);
3629
3630 if (!T)
3631 return InputInfo();
3632
3633 // If we've collapsed action list that contained OffloadAction we
3634 // need to build jobs for host/device-side inputs it may have held.
3635 for (const auto *OA : CollapsedOffloadActions)
3636 cast<OffloadAction>(OA)->doOnEachDependence(
3637 /*IsHostDependence=*/BuildingForOffloadDevice,
3638 [&](Action *DepA, const ToolChain *DepTC, const char *DepBoundArch) {
3639 OffloadDependencesInputInfo.push_back(BuildJobsForAction(
3640 C, DepA, DepTC, DepBoundArch, /* AtTopLevel */ false,
3641 /*MultipleArchs=*/!!DepBoundArch, LinkingOutput, CachedResults,
3642 DepA->getOffloadingDeviceKind()));
3643 });
3644
3645 // Only use pipes when there is exactly one input.
3646 InputInfoList InputInfos;
3647 for (const Action *Input : *Inputs) {
3648 // Treat dsymutil and verify sub-jobs as being at the top-level too, they
3649 // shouldn't get temporary output names.
3650 // FIXME: Clean this up.
3651 bool SubJobAtTopLevel =
3652 AtTopLevel && (isa<DsymutilJobAction>(A) || isa<VerifyJobAction>(A));
3653 InputInfos.push_back(BuildJobsForAction(
3654 C, Input, TC, BoundArch, SubJobAtTopLevel, MultipleArchs, LinkingOutput,
3655 CachedResults, A->getOffloadingDeviceKind()));
3656 }
3657
3658 // Always use the first input as the base input.
3659 const char *BaseInput = InputInfos[0].getBaseInput();
3660
3661 // ... except dsymutil actions, which use their actual input as the base
3662 // input.
3663 if (JA->getType() == types::TY_dSYM)
3664 BaseInput = InputInfos[0].getFilename();
3665
3666 // Append outputs of offload device jobs to the input list
3667 if (!OffloadDependencesInputInfo.empty())
3668 InputInfos.append(OffloadDependencesInputInfo.begin(),
3669 OffloadDependencesInputInfo.end());
3670
3671 // Set the effective triple of the toolchain for the duration of this job.
3672 llvm::Triple EffectiveTriple;
3673 const ToolChain &ToolTC = T->getToolChain();
3674 const ArgList &Args =
3675 C.getArgsForToolChain(TC, BoundArch, A->getOffloadingDeviceKind());
3676 if (InputInfos.size() != 1) {
3677 EffectiveTriple = llvm::Triple(ToolTC.ComputeEffectiveClangTriple(Args));
3678 } else {
3679 // Pass along the input type if it can be unambiguously determined.
3680 EffectiveTriple = llvm::Triple(
3681 ToolTC.ComputeEffectiveClangTriple(Args, InputInfos[0].getType()));
3682 }
3683 RegisterEffectiveTriple TripleRAII(ToolTC, EffectiveTriple);
3684
3685 // Determine the place to write output to, if any.
3686 InputInfo Result;
3687 InputInfoList UnbundlingResults;
3688 if (auto *UA = dyn_cast<OffloadUnbundlingJobAction>(JA)) {
3689 // If we have an unbundling job, we need to create results for all the
3690 // outputs. We also update the results cache so that other actions using
3691 // this unbundling action can get the right results.
3692 for (auto &UI : UA->getDependentActionsInfo()) {
3693 assert(UI.DependentOffloadKind != Action::OFK_None &&(static_cast <bool> (UI.DependentOffloadKind != Action::
OFK_None && "Unbundling with no offloading??") ? void
(0) : __assert_fail ("UI.DependentOffloadKind != Action::OFK_None && \"Unbundling with no offloading??\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 3694, __extension__ __PRETTY_FUNCTION__))
3694 "Unbundling with no offloading??")(static_cast <bool> (UI.DependentOffloadKind != Action::
OFK_None && "Unbundling with no offloading??") ? void
(0) : __assert_fail ("UI.DependentOffloadKind != Action::OFK_None && \"Unbundling with no offloading??\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 3694, __extension__ __PRETTY_FUNCTION__))
;
3695
3696 // Unbundling actions are never at the top level. When we generate the
3697 // offloading prefix, we also do that for the host file because the
3698 // unbundling action does not change the type of the output which can
3699 // cause a overwrite.
3700 std::string OffloadingPrefix = Action::GetOffloadingFileNamePrefix(
3701 UI.DependentOffloadKind,
3702 UI.DependentToolChain->getTriple().normalize(),
3703 /*CreatePrefixForHost=*/true);
3704 auto CurI = InputInfo(
3705 UA, GetNamedOutputPath(C, *UA, BaseInput, UI.DependentBoundArch,
3706 /*AtTopLevel=*/false, MultipleArchs,
3707 OffloadingPrefix),
3708 BaseInput);
3709 // Save the unbundling result.
3710 UnbundlingResults.push_back(CurI);
3711
3712 // Get the unique string identifier for this dependence and cache the
3713 // result.
3714 CachedResults[{A, GetTriplePlusArchString(
3715 UI.DependentToolChain, BoundArch,
3716 UI.DependentOffloadKind)}] = CurI;
3717 }
3718
3719 // Now that we have all the results generated, select the one that should be
3720 // returned for the current depending action.
3721 std::pair<const Action *, std::string> ActionTC = {
3722 A, GetTriplePlusArchString(TC, BoundArch, TargetDeviceOffloadKind)};
3723 assert(CachedResults.find(ActionTC) != CachedResults.end() &&(static_cast <bool> (CachedResults.find(ActionTC) != CachedResults
.end() && "Result does not exist??") ? void (0) : __assert_fail
("CachedResults.find(ActionTC) != CachedResults.end() && \"Result does not exist??\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 3724, __extension__ __PRETTY_FUNCTION__))
3724 "Result does not exist??")(static_cast <bool> (CachedResults.find(ActionTC) != CachedResults
.end() && "Result does not exist??") ? void (0) : __assert_fail
("CachedResults.find(ActionTC) != CachedResults.end() && \"Result does not exist??\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 3724, __extension__ __PRETTY_FUNCTION__))
;
3725 Result = CachedResults[ActionTC];
3726 } else if (JA->getType() == types::TY_Nothing)
3727 Result = InputInfo(A, BaseInput);
3728 else {
3729 // We only have to generate a prefix for the host if this is not a top-level
3730 // action.
3731 std::string OffloadingPrefix = Action::GetOffloadingFileNamePrefix(
3732 A->getOffloadingDeviceKind(), TC->getTriple().normalize(),
3733 /*CreatePrefixForHost=*/!!A->getOffloadingHostActiveKinds() &&
3734 !AtTopLevel);
3735 Result = InputInfo(A, GetNamedOutputPath(C, *JA, BaseInput, BoundArch,
3736 AtTopLevel, MultipleArchs,
3737 OffloadingPrefix),
3738 BaseInput);
3739 }
3740
3741 if (CCCPrintBindings && !CCGenDiagnostics) {
3742 llvm::errs() << "# \"" << T->getToolChain().getTripleString() << '"'
3743 << " - \"" << T->getName() << "\", inputs: [";
3744 for (unsigned i = 0, e = InputInfos.size(); i != e; ++i) {
3745 llvm::errs() << InputInfos[i].getAsString();
3746 if (i + 1 != e)
3747 llvm::errs() << ", ";
3748 }
3749 if (UnbundlingResults.empty())
3750 llvm::errs() << "], output: " << Result.getAsString() << "\n";
3751 else {
3752 llvm::errs() << "], outputs: [";
3753 for (unsigned i = 0, e = UnbundlingResults.size(); i != e; ++i) {
3754 llvm::errs() << UnbundlingResults[i].getAsString();
3755 if (i + 1 != e)
3756 llvm::errs() << ", ";
3757 }
3758 llvm::errs() << "] \n";
3759 }
3760 } else {
3761 if (UnbundlingResults.empty())
3762 T->ConstructJob(
3763 C, *JA, Result, InputInfos,
3764 C.getArgsForToolChain(TC, BoundArch, JA->getOffloadingDeviceKind()),
3765 LinkingOutput);
3766 else
3767 T->ConstructJobMultipleOutputs(
3768 C, *JA, UnbundlingResults, InputInfos,
3769 C.getArgsForToolChain(TC, BoundArch, JA->getOffloadingDeviceKind()),
3770 LinkingOutput);
3771 }
3772 return Result;
3773}
3774
3775const char *Driver::getDefaultImageName() const {
3776 llvm::Triple Target(llvm::Triple::normalize(DefaultTargetTriple));
3777 return Target.isOSWindows() ? "a.exe" : "a.out";
3778}
3779
3780/// \brief Create output filename based on ArgValue, which could either be a
3781/// full filename, filename without extension, or a directory. If ArgValue
3782/// does not provide a filename, then use BaseName, and use the extension
3783/// suitable for FileType.
3784static const char *MakeCLOutputFilename(const ArgList &Args, StringRef ArgValue,
3785 StringRef BaseName,
3786 types::ID FileType) {
3787 SmallString<128> Filename = ArgValue;
3788
3789 if (ArgValue.empty()) {
3790 // If the argument is empty, output to BaseName in the current dir.
3791 Filename = BaseName;
3792 } else if (llvm::sys::path::is_separator(Filename.back())) {
3793 // If the argument is a directory, output to BaseName in that dir.
3794 llvm::sys::path::append(Filename, BaseName);
3795 }
3796
3797 if (!llvm::sys::path::has_extension(ArgValue)) {
3798 // If the argument didn't provide an extension, then set it.
3799 const char *Extension = types::getTypeTempSuffix(FileType, true);
3800
3801 if (FileType == types::TY_Image &&
3802 Args.hasArg(options::OPT__SLASH_LD, options::OPT__SLASH_LDd)) {
3803 // The output file is a dll.
3804 Extension = "dll";
3805 }
3806
3807 llvm::sys::path::replace_extension(Filename, Extension);
3808 }
3809
3810 return Args.MakeArgString(Filename.c_str());
3811}
3812
3813const char *Driver::GetNamedOutputPath(Compilation &C, const JobAction &JA,
3814 const char *BaseInput,
3815 StringRef BoundArch, bool AtTopLevel,
3816 bool MultipleArchs,
3817 StringRef OffloadingPrefix) const {
3818 llvm::PrettyStackTraceString CrashInfo("Computing output path");
3819 // Output to a user requested destination?
3820 if (AtTopLevel && !isa<DsymutilJobAction>(JA) && !isa<VerifyJobAction>(JA)) {
3821 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
3822 return C.addResultFile(FinalOutput->getValue(), &JA);
3823 }
3824
3825 // For /P, preprocess to file named after BaseInput.
3826 if (C.getArgs().hasArg(options::OPT__SLASH_P)) {
3827 assert(AtTopLevel && isa<PreprocessJobAction>(JA))(static_cast <bool> (AtTopLevel && isa<PreprocessJobAction
>(JA)) ? void (0) : __assert_fail ("AtTopLevel && isa<PreprocessJobAction>(JA)"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 3827, __extension__ __PRETTY_FUNCTION__))
;
3828 StringRef BaseName = llvm::sys::path::filename(BaseInput);
3829 StringRef NameArg;
3830 if (Arg *A = C.getArgs().getLastArg(options::OPT__SLASH_Fi))
3831 NameArg = A->getValue();
3832 return C.addResultFile(
3833 MakeCLOutputFilename(C.getArgs(), NameArg, BaseName, types::TY_PP_C),
3834 &JA);
3835 }
3836
3837 // Default to writing to stdout?
3838 if (AtTopLevel && !CCGenDiagnostics &&
3839 (isa<PreprocessJobAction>(JA) || JA.getType() == types::TY_ModuleFile))
3840 return "-";
3841
3842 // Is this the assembly listing for /FA?
3843 if (JA.getType() == types::TY_PP_Asm &&
3844 (C.getArgs().hasArg(options::OPT__SLASH_FA) ||
3845 C.getArgs().hasArg(options::OPT__SLASH_Fa))) {
3846 // Use /Fa and the input filename to determine the asm file name.
3847 StringRef BaseName = llvm::sys::path::filename(BaseInput);
3848 StringRef FaValue = C.getArgs().getLastArgValue(options::OPT__SLASH_Fa);
3849 return C.addResultFile(
3850 MakeCLOutputFilename(C.getArgs(), FaValue, BaseName, JA.getType()),
3851 &JA);
3852 }
3853
3854 // Output to a temporary file?
3855 if ((!AtTopLevel && !isSaveTempsEnabled() &&
3856 !C.getArgs().hasArg(options::OPT__SLASH_Fo)) ||
3857 CCGenDiagnostics) {
3858 StringRef Name = llvm::sys::path::filename(BaseInput);
3859 std::pair<StringRef, StringRef> Split = Name.split('.');
3860 std::string TmpName = GetTemporaryPath(
3861 Split.first, types::getTypeTempSuffix(JA.getType(), IsCLMode()));
3862 return C.addTempFile(C.getArgs().MakeArgString(TmpName));
3863 }
3864
3865 SmallString<128> BasePath(BaseInput);
3866 StringRef BaseName;
3867
3868 // Dsymutil actions should use the full path.
3869 if (isa<DsymutilJobAction>(JA) || isa<VerifyJobAction>(JA))
3870 BaseName = BasePath;
3871 else
3872 BaseName = llvm::sys::path::filename(BasePath);
3873
3874 // Determine what the derived output name should be.
3875 const char *NamedOutput;
3876
3877 if ((JA.getType() == types::TY_Object || JA.getType() == types::TY_LTO_BC) &&
3878 C.getArgs().hasArg(options::OPT__SLASH_Fo, options::OPT__SLASH_o)) {
3879 // The /Fo or /o flag decides the object filename.
3880 StringRef Val =
3881 C.getArgs()
3882 .getLastArg(options::OPT__SLASH_Fo, options::OPT__SLASH_o)
3883 ->getValue();
3884 NamedOutput =
3885 MakeCLOutputFilename(C.getArgs(), Val, BaseName, types::TY_Object);
3886 } else if (JA.getType() == types::TY_Image &&
3887 C.getArgs().hasArg(options::OPT__SLASH_Fe,
3888 options::OPT__SLASH_o)) {
3889 // The /Fe or /o flag names the linked file.
3890 StringRef Val =
3891 C.getArgs()
3892 .getLastArg(options::OPT__SLASH_Fe, options::OPT__SLASH_o)
3893 ->getValue();
3894 NamedOutput =
3895 MakeCLOutputFilename(C.getArgs(), Val, BaseName, types::TY_Image);
3896 } else if (JA.getType() == types::TY_Image) {
3897 if (IsCLMode()) {
3898 // clang-cl uses BaseName for the executable name.
3899 NamedOutput =
3900 MakeCLOutputFilename(C.getArgs(), "", BaseName, types::TY_Image);
3901 } else {
3902 SmallString<128> Output(getDefaultImageName());
3903 Output += OffloadingPrefix;
3904 if (MultipleArchs && !BoundArch.empty()) {
3905 Output += "-";
3906 Output.append(BoundArch);
3907 }
3908 NamedOutput = C.getArgs().MakeArgString(Output.c_str());
3909 }
3910 } else if (JA.getType() == types::TY_PCH && IsCLMode()) {
3911 NamedOutput = C.getArgs().MakeArgString(GetClPchPath(C, BaseName));
3912 } else {
3913 const char *Suffix = types::getTypeTempSuffix(JA.getType(), IsCLMode());
3914 assert(Suffix && "All types used for output should have a suffix.")(static_cast <bool> (Suffix && "All types used for output should have a suffix."
) ? void (0) : __assert_fail ("Suffix && \"All types used for output should have a suffix.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Driver/Driver.cpp"
, 3914, __extension__ __PRETTY_FUNCTION__))
;
3915
3916 std::string::size_type End = std::string::npos;
3917 if (!types::appendSuffixForType(JA.getType()))
3918 End = BaseName.rfind('.');
3919 SmallString<128> Suffixed(BaseName.substr(0, End));
3920 Suffixed += OffloadingPrefix;
3921 if (MultipleArchs && !BoundArch.empty()) {
3922 Suffixed += "-";
3923 Suffixed.append(BoundArch);
3924 }
3925 // When using both -save-temps and -emit-llvm, use a ".tmp.bc" suffix for
3926 // the unoptimized bitcode so that it does not get overwritten by the ".bc"
3927 // optimized bitcode output.
3928 if (!AtTopLevel && C.getArgs().hasArg(options::OPT_emit_llvm) &&
3929 JA.getType() == types::TY_LLVM_BC)
3930 Suffixed += ".tmp";
3931 Suffixed += '.';
3932 Suffixed += Suffix;
3933 NamedOutput = C.getArgs().MakeArgString(Suffixed.c_str());
3934 }
3935
3936 // Prepend object file path if -save-temps=obj
3937 if (!AtTopLevel && isSaveTempsObj() && C.getArgs().hasArg(options::OPT_o) &&
3938 JA.getType() != types::TY_PCH) {
3939 Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o);
3940 SmallString<128> TempPath(FinalOutput->getValue());
3941 llvm::sys::path::remove_filename(TempPath);
3942 StringRef OutputFileName = llvm::sys::path::filename(NamedOutput);
3943 llvm::sys::path::append(TempPath, OutputFileName);
3944 NamedOutput = C.getArgs().MakeArgString(TempPath.c_str());
3945 }
3946
3947 // If we're saving temps and the temp file conflicts with the input file,
3948 // then avoid overwriting input file.
3949 if (!AtTopLevel && isSaveTempsEnabled() && NamedOutput == BaseName) {
3950 bool SameFile = false;
3951 SmallString<256> Result;
3952 llvm::sys::fs::current_path(Result);
3953 llvm::sys::path::append(Result, BaseName);
3954 llvm::sys::fs::equivalent(BaseInput, Result.c_str(), SameFile);
3955 // Must share the same path to conflict.
3956 if (SameFile) {
3957 StringRef Name = llvm::sys::path::filename(BaseInput);
3958 std::pair<StringRef, StringRef> Split = Name.split('.');
3959 std::string TmpName = GetTemporaryPath(
3960 Split.first, types::getTypeTempSuffix(JA.getType(), IsCLMode()));
3961 return C.addTempFile(C.getArgs().MakeArgString(TmpName));
3962 }
3963 }
3964
3965 // As an annoying special case, PCH generation doesn't strip the pathname.
3966 if (JA.getType() == types::TY_PCH && !IsCLMode()) {
3967 llvm::sys::path::remove_filename(BasePath);
3968 if (BasePath.empty())
3969 BasePath = NamedOutput;
3970 else
3971 llvm::sys::path::append(BasePath, NamedOutput);
3972 return C.addResultFile(C.getArgs().MakeArgString(BasePath.c_str()), &JA);
3973 } else {
3974 return C.addResultFile(NamedOutput, &JA);
3975 }
3976}
3977
3978std::string Driver::GetFilePath(StringRef Name, const ToolChain &TC) const {
3979 // Respect a limited subset of the '-Bprefix' functionality in GCC by
3980 // attempting to use this prefix when looking for file paths.
3981 for (const std::string &Dir : PrefixDirs) {
3982 if (Dir.empty())
3983 continue;
3984 SmallString<128> P(Dir[0] == '=' ? SysRoot + Dir.substr(1) : Dir);
3985 llvm::sys::path::append(P, Name);
3986 if (llvm::sys::fs::exists(Twine(P)))
3987 return P.str();
3988 }
3989
3990 SmallString<128> R(ResourceDir);
3991 llvm::sys::path::append(R, Name);
3992 if (llvm::sys::fs::exists(Twine(R)))
3993 return R.str();
3994
3995 SmallString<128> P(TC.getCompilerRTPath());
3996 llvm::sys::path::append(P, Name);
3997 if (llvm::sys::fs::exists(Twine(P)))
3998 return P.str();
3999
4000 for (const std::string &Dir : TC.getFilePaths()) {
4001 if (Dir.empty())
4002 continue;
4003 SmallString<128> P(Dir[0] == '=' ? SysRoot + Dir.substr(1) : Dir);
4004 llvm::sys::path::append(P, Name);
4005 if (llvm::sys::fs::exists(Twine(P)))
4006 return P.str();
4007 }
4008
4009 return Name;
4010}
4011
4012void Driver::generatePrefixedToolNames(
4013 StringRef Tool, const ToolChain &TC,
4014 SmallVectorImpl<std::string> &Names) const {
4015 // FIXME: Needs a better variable than DefaultTargetTriple
4016 Names.emplace_back((DefaultTargetTriple + "-" + Tool).str());
4017 Names.emplace_back(Tool);
4018
4019 // Allow the discovery of tools prefixed with LLVM's default target triple.
4020 std::string LLVMDefaultTargetTriple = llvm::sys::getDefaultTargetTriple();
4021 if (LLVMDefaultTargetTriple != DefaultTargetTriple)
4022 Names.emplace_back((LLVMDefaultTargetTriple + "-" + Tool).str());
4023}
4024
4025static bool ScanDirForExecutable(SmallString<128> &Dir,
4026 ArrayRef<std::string> Names) {
4027 for (const auto &Name : Names) {
4028 llvm::sys::path::append(Dir, Name);
4029 if (llvm::sys::fs::can_execute(Twine(Dir)))
4030 return true;
4031 llvm::sys::path::remove_filename(Dir);
4032 }
4033 return false;
4034}
4035
4036std::string Driver::GetProgramPath(StringRef Name, const ToolChain &TC) const {
4037 SmallVector<std::string, 2> TargetSpecificExecutables;
4038 generatePrefixedToolNames(Name, TC, TargetSpecificExecutables);
4039
4040 // Respect a limited subset of the '-Bprefix' functionality in GCC by
4041 // attempting to use this prefix when looking for program paths.
4042 for (const auto &PrefixDir : PrefixDirs) {
4043 if (llvm::sys::fs::is_directory(PrefixDir)) {
4044 SmallString<128> P(PrefixDir);
4045 if (ScanDirForExecutable(P, TargetSpecificExecutables))
4046 return P.str();
4047 } else {
4048 SmallString<128> P((PrefixDir + Name).str());
4049 if (llvm::sys::fs::can_execute(Twine(P)))
4050 return P.str();
4051 }
4052 }
4053
4054 const ToolChain::path_list &List = TC.getProgramPaths();
4055 for (const auto &Path : List) {
4056 SmallString<128> P(Path);
4057 if (ScanDirForExecutable(P, TargetSpecificExecutables))
4058 return P.str();
4059 }
4060
4061 // If all else failed, search the path.
4062 for (const auto &TargetSpecificExecutable : TargetSpecificExecutables)
4063 if (llvm::ErrorOr<std::string> P =
4064 llvm::sys::findProgramByName(TargetSpecificExecutable))
4065 return *P;
4066
4067 return Name;
4068}
4069
4070std::string Driver::GetTemporaryPath(StringRef Prefix, StringRef Suffix) const {
4071 SmallString<128> Path;
4072 std::error_code EC = llvm::sys::fs::createTemporaryFile(Prefix, Suffix, Path);
4073 if (EC) {
4074 Diag(clang::diag::err_unable_to_make_temp) << EC.message();
4075 return "";
4076 }
4077
4078 return Path.str();
4079}
4080
4081std::string Driver::GetClPchPath(Compilation &C, StringRef BaseName) const {
4082 SmallString<128> Output;
4083 if (Arg *FpArg = C.getArgs().getLastArg(options::OPT__SLASH_Fp)) {
4084 // FIXME: If anybody needs it, implement this obscure rule:
4085 // "If you specify a directory without a file name, the default file name
4086 // is VCx0.pch., where x is the major version of Visual C++ in use."
4087 Output = FpArg->getValue();
4088
4089 // "If you do not specify an extension as part of the path name, an
4090 // extension of .pch is assumed. "
4091 if (!llvm::sys::path::has_extension(Output))
4092 Output += ".pch";
4093 } else {
4094 Output = BaseName;
4095 llvm::sys::path::replace_extension(Output, ".pch");
4096 }
4097 return Output.str();
4098}
4099
4100const ToolChain &Driver::getToolChain(const ArgList &Args,
4101 const llvm::Triple &Target) const {
4102
4103 auto &TC = ToolChains[Target.str()];
4104 if (!TC) {
4105 switch (Target.getOS()) {
4106 case llvm::Triple::Haiku:
4107 TC = llvm::make_unique<toolchains::Haiku>(*this, Target, Args);
4108 break;
4109 case llvm::Triple::Ananas:
4110 TC = llvm::make_unique<toolchains::Ananas>(*this, Target, Args);
4111 break;
4112 case llvm::Triple::CloudABI:
4113 TC = llvm::make_unique<toolchains::CloudABI>(*this, Target, Args);
4114 break;
4115 case llvm::Triple::Darwin:
4116 case llvm::Triple::MacOSX:
4117 case llvm::Triple::IOS:
4118 case llvm::Triple::TvOS:
4119 case llvm::Triple::WatchOS:
4120 TC = llvm::make_unique<toolchains::DarwinClang>(*this, Target, Args);
4121 break;
4122 case llvm::Triple::DragonFly:
4123 TC = llvm::make_unique<toolchains::DragonFly>(*this, Target, Args);
4124 break;
4125 case llvm::Triple::OpenBSD:
4126 TC = llvm::make_unique<toolchains::OpenBSD>(*this, Target, Args);
4127 break;
4128 case llvm::Triple::NetBSD:
4129 TC = llvm::make_unique<toolchains::NetBSD>(*this, Target, Args);
4130 break;
4131 case llvm::Triple::FreeBSD:
4132 TC = llvm::make_unique<toolchains::FreeBSD>(*this, Target, Args);
4133 break;
4134 case llvm::Triple::Minix:
4135 TC = llvm::make_unique<toolchains::Minix>(*this, Target, Args);
4136 break;
4137 case llvm::Triple::Linux:
4138 case llvm::Triple::ELFIAMCU:
4139 if (Target.getArch() == llvm::Triple::hexagon)
4140 TC = llvm::make_unique<toolchains::HexagonToolChain>(*this, Target,
4141 Args);
4142 else if ((Target.getVendor() == llvm::Triple::MipsTechnologies) &&
4143 !Target.hasEnvironment())
4144 TC = llvm::make_unique<toolchains::MipsLLVMToolChain>(*this, Target,
4145 Args);
4146 else
4147 TC = llvm::make_unique<toolchains::Linux>(*this, Target, Args);
4148 break;
4149 case llvm::Triple::NaCl:
4150 TC = llvm::make_unique<toolchains::NaClToolChain>(*this, Target, Args);
4151 break;
4152 case llvm::Triple::Fuchsia:
4153 TC = llvm::make_unique<toolchains::Fuchsia>(*this, Target, Args);
4154 break;
4155 case llvm::Triple::Solaris:
4156 TC = llvm::make_unique<toolchains::Solaris>(*this, Target, Args);
4157 break;
4158 case llvm::Triple::AMDHSA:
4159 TC = llvm::make_unique<toolchains::AMDGPUToolChain>(*this, Target, Args);
4160 break;
4161 case llvm::Triple::Win32:
4162 switch (Target.getEnvironment()) {
4163 default:
4164 if (Target.isOSBinFormatELF())
4165 TC = llvm::make_unique<toolchains::Generic_ELF>(*this, Target, Args);
4166 else if (Target.isOSBinFormatMachO())
4167 TC = llvm::make_unique<toolchains::MachO>(*this, Target, Args);
4168 else
4169 TC = llvm::make_unique<toolchains::Generic_GCC>(*this, Target, Args);
4170 break;
4171 case llvm::Triple::GNU:
4172 TC = llvm::make_unique<toolchains::MinGW>(*this, Target, Args);
4173 break;
4174 case llvm::Triple::Itanium:
4175 TC = llvm::make_unique<toolchains::CrossWindowsToolChain>(*this, Target,
4176 Args);
4177 break;
4178 case llvm::Triple::MSVC:
4179 case llvm::Triple::UnknownEnvironment:
4180 if (Args.getLastArgValue(options::OPT_fuse_ld_EQ)
4181 .startswith_lower("bfd"))
4182 TC = llvm::make_unique<toolchains::CrossWindowsToolChain>(
4183 *this, Target, Args);
4184 else
4185 TC =
4186 llvm::make_unique<toolchains::MSVCToolChain>(*this, Target, Args);
4187 break;
4188 }
4189 break;
4190 case llvm::Triple::PS4:
4191 TC = llvm::make_unique<toolchains::PS4CPU>(*this, Target, Args);
4192 break;
4193 case llvm::Triple::Contiki:
4194 TC = llvm::make_unique<toolchains::Contiki>(*this, Target, Args);
4195 break;
4196 default:
4197 // Of these targets, Hexagon is the only one that might have
4198 // an OS of Linux, in which case it got handled above already.
4199 switch (Target.getArch()) {
4200 case llvm::Triple::tce:
4201 TC = llvm::make_unique<toolchains::TCEToolChain>(*this, Target, Args);
4202 break;
4203 case llvm::Triple::tcele:
4204 TC = llvm::make_unique<toolchains::TCELEToolChain>(*this, Target, Args);
4205 break;
4206 case llvm::Triple::hexagon:
4207 TC = llvm::make_unique<toolchains::HexagonToolChain>(*this, Target,
4208 Args);
4209 break;
4210 case llvm::Triple::lanai:
4211 TC = llvm::make_unique<toolchains::LanaiToolChain>(*this, Target, Args);
4212 break;
4213 case llvm::Triple::xcore:
4214 TC = llvm::make_unique<toolchains::XCoreToolChain>(*this, Target, Args);
4215 break;
4216 case llvm::Triple::wasm32:
4217 case llvm::Triple::wasm64:
4218 TC = llvm::make_unique<toolchains::WebAssembly>(*this, Target, Args);
4219 break;
4220 case llvm::Triple::avr:
4221 TC = llvm::make_unique<toolchains::AVRToolChain>(*this, Target, Args);
4222 break;
4223 default:
4224 if (Target.getVendor() == llvm::Triple::Myriad)
4225 TC = llvm::make_unique<toolchains::MyriadToolChain>(*this, Target,
4226 Args);
4227 else if (toolchains::BareMetal::handlesTarget(Target))
4228 TC = llvm::make_unique<toolchains::BareMetal>(*this, Target, Args);
4229 else if (Target.isOSBinFormatELF())
4230 TC = llvm::make_unique<toolchains::Generic_ELF>(*this, Target, Args);
4231 else if (Target.isOSBinFormatMachO())
4232 TC = llvm::make_unique<toolchains::MachO>(*this, Target, Args);
4233 else
4234 TC = llvm::make_unique<toolchains::Generic_GCC>(*this, Target, Args);
4235 }
4236 }
4237 }
4238
4239 // Intentionally omitted from the switch above: llvm::Triple::CUDA. CUDA
4240 // compiles always need two toolchains, the CUDA toolchain and the host
4241 // toolchain. So the only valid way to create a CUDA toolchain is via
4242 // CreateOffloadingDeviceToolChains.
4243
4244 return *TC;
4245}
4246
4247bool Driver::ShouldUseClangCompiler(const JobAction &JA) const {
4248 // Say "no" if there is not exactly one input of a type clang understands.
4249 if (JA.size() != 1 ||
4250 !types::isAcceptedByClang((*JA.input_begin())->getType()))
4251 return false;
4252
4253 // And say "no" if this is not a kind of action clang understands.
4254 if (!isa<PreprocessJobAction>(JA) && !isa<PrecompileJobAction>(JA) &&
4255 !isa<CompileJobAction>(JA) && !isa<BackendJobAction>(JA))
4256 return false;
4257
4258 return true;
4259}
4260
4261/// GetReleaseVersion - Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and return the
4262/// grouped values as integers. Numbers which are not provided are set to 0.
4263///
4264/// \return True if the entire string was parsed (9.2), or all groups were
4265/// parsed (10.3.5extrastuff).
4266bool Driver::GetReleaseVersion(StringRef Str, unsigned &Major, unsigned &Minor,
4267 unsigned &Micro, bool &HadExtra) {
4268 HadExtra = false;
4269
4270 Major = Minor = Micro = 0;
4271 if (Str.empty())
4272 return false;
4273
4274 if (Str.consumeInteger(10, Major))
4275 return false;
4276 if (Str.empty())
4277 return true;
4278 if (Str[0] != '.')
4279 return false;
4280
4281 Str = Str.drop_front(1);
4282
4283 if (Str.consumeInteger(10, Minor))
4284 return false;
4285 if (Str.empty())
4286 return true;
4287 if (Str[0] != '.')
4288 return false;
4289 Str = Str.drop_front(1);
4290
4291 if (Str.consumeInteger(10, Micro))
4292 return false;
4293 if (!Str.empty())
4294 HadExtra = true;
4295 return true;
4296}
4297
4298/// Parse digits from a string \p Str and fulfill \p Digits with
4299/// the parsed numbers. This method assumes that the max number of
4300/// digits to look for is equal to Digits.size().
4301///
4302/// \return True if the entire string was parsed and there are
4303/// no extra characters remaining at the end.
4304bool Driver::GetReleaseVersion(StringRef Str,
4305 MutableArrayRef<unsigned> Digits) {
4306 if (Str.empty())
4307 return false;
4308
4309 unsigned CurDigit = 0;
4310 while (CurDigit < Digits.size()) {
4311 unsigned Digit;
4312 if (Str.consumeInteger(10, Digit))
4313 return false;
4314 Digits[CurDigit] = Digit;
4315 if (Str.empty())
4316 return true;
4317 if (Str[0] != '.')
4318 return false;
4319 Str = Str.drop_front(1);
4320 CurDigit++;
4321 }
4322
4323 // More digits than requested, bail out...
4324 return false;
4325}
4326
4327std::pair<unsigned, unsigned> Driver::getIncludeExcludeOptionFlagMasks() const {
4328 unsigned IncludedFlagsBitmask = 0;
4329 unsigned ExcludedFlagsBitmask = options::NoDriverOption;
4330
4331 if (Mode == CLMode) {
4332 // Include CL and Core options.
4333 IncludedFlagsBitmask |= options::CLOption;
4334 IncludedFlagsBitmask |= options::CoreOption;
4335 } else {
4336 ExcludedFlagsBitmask |= options::CLOption;
4337 }
4338
4339 return std::make_pair(IncludedFlagsBitmask, ExcludedFlagsBitmask);
4340}
4341
4342bool clang::driver::isOptimizationLevelFast(const ArgList &Args) {
4343 return Args.hasFlag(options::OPT_Ofast, options::OPT_O_Group, false);
4344}