1 //===--- Compilation.cpp - Compilation Task Implementation ----------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "clang/Driver/Compilation.h"
11 #include "clang/Driver/Action.h"
12 #include "clang/Driver/Driver.h"
13 #include "clang/Driver/DriverDiagnostic.h"
14 #include "clang/Driver/Options.h"
15 #include "clang/Driver/ToolChain.h"
16 #include "llvm/ADT/STLExtras.h"
17 #include "llvm/Option/ArgList.h"
18 #include "llvm/Support/FileSystem.h"
19 #include "llvm/Support/raw_ostream.h"
21 using namespace clang::driver;
22 using namespace clang;
23 using namespace llvm::opt;
25 Compilation::Compilation(const Driver &D, const ToolChain &_DefaultToolChain,
26 InputArgList *_Args, DerivedArgList *_TranslatedArgs,
28 : TheDriver(D), DefaultToolChain(_DefaultToolChain), ActiveOffloadMask(0u),
29 Args(_Args), TranslatedArgs(_TranslatedArgs), ForDiagnostics(false),
30 ContainsError(ContainsError) {
31 // The offloading host toolchain is the default toolchain.
32 OrderedOffloadingToolchains.insert(
33 std::make_pair(Action::OFK_Host, &DefaultToolChain));
36 Compilation::~Compilation() {
37 delete TranslatedArgs;
40 // Free any derived arg lists.
41 for (auto Arg : TCArgs)
42 if (Arg.second != TranslatedArgs)
46 const DerivedArgList &
47 Compilation::getArgsForToolChain(const ToolChain *TC, StringRef BoundArch,
48 Action::OffloadKind DeviceOffloadKind) {
50 TC = &DefaultToolChain;
52 DerivedArgList *&Entry = TCArgs[{TC, BoundArch, DeviceOffloadKind}];
54 SmallVector<Arg *, 4> AllocatedArgs;
55 DerivedArgList *OpenMPArgs = nullptr;
56 // Translate OpenMP toolchain arguments provided via the -Xopenmp-target flags.
57 if (DeviceOffloadKind == Action::OFK_OpenMP) {
58 const ToolChain *HostTC = getSingleOffloadToolChain<Action::OFK_Host>();
59 bool SameTripleAsHost = (TC->getTriple() == HostTC->getTriple());
60 OpenMPArgs = TC->TranslateOpenMPTargetArgs(
61 *TranslatedArgs, SameTripleAsHost, AllocatedArgs);
65 Entry = TC->TranslateArgs(*TranslatedArgs, BoundArch, DeviceOffloadKind);
67 Entry = TranslatedArgs;
69 Entry = TC->TranslateArgs(*OpenMPArgs, BoundArch, DeviceOffloadKind);
76 // Add allocated arguments to the final DAL.
77 for (auto ArgPtr : AllocatedArgs) {
78 Entry->AddSynthesizedArg(ArgPtr);
85 bool Compilation::CleanupFile(const char *File, bool IssueErrors) const {
86 // FIXME: Why are we trying to remove files that we have not created? For
87 // example we should only try to remove a temporary assembly file if
88 // "clang -cc1" succeed in writing it. Was this a workaround for when
89 // clang was writing directly to a .s file and sometimes leaving it behind
92 // FIXME: If this is necessary, we can still try to split
93 // llvm::sys::fs::remove into a removeFile and a removeDir and avoid the
94 // duplicated stat from is_regular_file.
96 // Don't try to remove files which we don't have write access to (but may be
97 // able to remove), or non-regular files. Underlying tools may have
98 // intentionally not overwritten them.
99 if (!llvm::sys::fs::can_write(File) || !llvm::sys::fs::is_regular_file(File))
102 if (std::error_code EC = llvm::sys::fs::remove(File)) {
103 // Failure is only failure if the file exists and is "regular". We checked
104 // for it being regular before, and llvm::sys::fs::remove ignores ENOENT,
105 // so we don't need to check again.
108 getDriver().Diag(clang::diag::err_drv_unable_to_remove_file)
115 bool Compilation::CleanupFileList(const ArgStringList &Files,
116 bool IssueErrors) const {
118 for (ArgStringList::const_iterator
119 it = Files.begin(), ie = Files.end(); it != ie; ++it)
120 Success &= CleanupFile(*it, IssueErrors);
124 bool Compilation::CleanupFileMap(const ArgStringMap &Files,
126 bool IssueErrors) const {
128 for (ArgStringMap::const_iterator
129 it = Files.begin(), ie = Files.end(); it != ie; ++it) {
131 // If specified, only delete the files associated with the JobAction.
132 // Otherwise, delete all files in the map.
133 if (JA && it->first != JA)
135 Success &= CleanupFile(it->second, IssueErrors);
140 int Compilation::ExecuteCommand(const Command &C,
141 const Command *&FailingCommand) const {
142 if ((getDriver().CCPrintOptions ||
143 getArgs().hasArg(options::OPT_v)) && !getDriver().CCGenDiagnostics) {
144 raw_ostream *OS = &llvm::errs();
146 // Follow gcc implementation of CC_PRINT_OPTIONS; we could also cache the
148 if (getDriver().CCPrintOptions && getDriver().CCPrintOptionsFilename) {
150 OS = new llvm::raw_fd_ostream(getDriver().CCPrintOptionsFilename, EC,
151 llvm::sys::fs::F_Append |
152 llvm::sys::fs::F_Text);
154 getDriver().Diag(clang::diag::err_drv_cc_print_options_failure)
162 if (getDriver().CCPrintOptions)
163 *OS << "[Logging clang options]";
165 C.Print(*OS, "\n", /*Quote=*/getDriver().CCPrintOptions);
167 if (OS != &llvm::errs())
172 bool ExecutionFailed;
173 int Res = C.Execute(Redirects, &Error, &ExecutionFailed);
174 if (!Error.empty()) {
175 assert(Res && "Error string set with 0 result code!");
176 getDriver().Diag(clang::diag::err_drv_command_failure) << Error;
182 return ExecutionFailed ? 1 : Res;
185 using FailingCommandList = SmallVectorImpl<std::pair<int, const Command *>>;
187 static bool ActionFailed(const Action *A,
188 const FailingCommandList &FailingCommands) {
190 if (FailingCommands.empty())
193 // CUDA can have the same input source code compiled multiple times so do not
194 // compiled again if there are already failures. It is OK to abort the CUDA
195 // pipeline on errors.
196 if (A->isOffloading(Action::OFK_Cuda))
199 for (const auto &CI : FailingCommands)
200 if (A == &(CI.second->getSource()))
203 for (const Action *AI : A->inputs())
204 if (ActionFailed(AI, FailingCommands))
210 static bool InputsOk(const Command &C,
211 const FailingCommandList &FailingCommands) {
212 return !ActionFailed(&C.getSource(), FailingCommands);
215 void Compilation::ExecuteJobs(const JobList &Jobs,
216 FailingCommandList &FailingCommands) const {
217 // According to UNIX standard, driver need to continue compiling all the
218 // inputs on the command line even one of them failed.
219 // In all but CLMode, execute all the jobs unless the necessary inputs for the
220 // job is missing due to previous failures.
221 for (const auto &Job : Jobs) {
222 if (!InputsOk(Job, FailingCommands))
224 const Command *FailingCommand = nullptr;
225 if (int Res = ExecuteCommand(Job, FailingCommand)) {
226 FailingCommands.push_back(std::make_pair(Res, FailingCommand));
227 // Bail as soon as one command fails in cl driver mode.
228 if (TheDriver.IsCLMode())
234 void Compilation::initCompilationForDiagnostics() {
235 ForDiagnostics = true;
237 // Free actions and jobs.
242 // Clear temporary/results file lists.
245 FailureResultFiles.clear();
247 // Remove any user specified output. Claim any unclaimed arguments, so as
248 // to avoid emitting warnings about unused args.
249 OptSpecifier OutputOpts[] = { options::OPT_o, options::OPT_MD,
251 for (unsigned i = 0, e = llvm::array_lengthof(OutputOpts); i != e; ++i) {
252 if (TranslatedArgs->hasArg(OutputOpts[i]))
253 TranslatedArgs->eraseArg(OutputOpts[i]);
255 TranslatedArgs->ClaimAllArgs();
257 // Redirect stdout/stderr to /dev/null.
258 Redirects = {None, {""}, {""}};
261 StringRef Compilation::getSysRoot() const {
262 return getDriver().SysRoot;
265 void Compilation::Redirect(ArrayRef<Optional<StringRef>> Redirects) {
266 this->Redirects = Redirects;