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)
27 : TheDriver(D), DefaultToolChain(_DefaultToolChain),
28 CudaHostToolChain(&DefaultToolChain), CudaDeviceToolChain(nullptr),
29 Args(_Args), TranslatedArgs(_TranslatedArgs), Redirects(nullptr),
30 ForDiagnostics(false) {}
32 Compilation::~Compilation() {
33 delete TranslatedArgs;
36 // Free any derived arg lists.
37 for (llvm::DenseMap<std::pair<const ToolChain*, const char*>,
38 DerivedArgList*>::iterator it = TCArgs.begin(),
39 ie = TCArgs.end(); it != ie; ++it)
40 if (it->second != TranslatedArgs)
43 // Free the actions, if built.
44 for (ActionList::iterator it = Actions.begin(), ie = Actions.end();
48 // Free redirections of stdout/stderr.
56 const DerivedArgList &Compilation::getArgsForToolChain(const ToolChain *TC,
57 const char *BoundArch) {
59 TC = &DefaultToolChain;
61 DerivedArgList *&Entry = TCArgs[std::make_pair(TC, BoundArch)];
63 Entry = TC->TranslateArgs(*TranslatedArgs, BoundArch);
65 Entry = TranslatedArgs;
71 bool Compilation::CleanupFile(const char *File, bool IssueErrors) const {
72 // FIXME: Why are we trying to remove files that we have not created? For
73 // example we should only try to remove a temporary assembly file if
74 // "clang -cc1" succeed in writing it. Was this a workaround for when
75 // clang was writing directly to a .s file and sometimes leaving it behind
78 // FIXME: If this is necessary, we can still try to split
79 // llvm::sys::fs::remove into a removeFile and a removeDir and avoid the
80 // duplicated stat from is_regular_file.
82 // Don't try to remove files which we don't have write access to (but may be
83 // able to remove), or non-regular files. Underlying tools may have
84 // intentionally not overwritten them.
85 if (!llvm::sys::fs::can_write(File) || !llvm::sys::fs::is_regular_file(File))
88 if (std::error_code EC = llvm::sys::fs::remove(File)) {
89 // Failure is only failure if the file exists and is "regular". We checked
90 // for it being regular before, and llvm::sys::fs::remove ignores ENOENT,
91 // so we don't need to check again.
94 getDriver().Diag(clang::diag::err_drv_unable_to_remove_file)
101 bool Compilation::CleanupFileList(const ArgStringList &Files,
102 bool IssueErrors) const {
104 for (ArgStringList::const_iterator
105 it = Files.begin(), ie = Files.end(); it != ie; ++it)
106 Success &= CleanupFile(*it, IssueErrors);
110 bool Compilation::CleanupFileMap(const ArgStringMap &Files,
112 bool IssueErrors) const {
114 for (ArgStringMap::const_iterator
115 it = Files.begin(), ie = Files.end(); it != ie; ++it) {
117 // If specified, only delete the files associated with the JobAction.
118 // Otherwise, delete all files in the map.
119 if (JA && it->first != JA)
121 Success &= CleanupFile(it->second, IssueErrors);
126 int Compilation::ExecuteCommand(const Command &C,
127 const Command *&FailingCommand) const {
128 if ((getDriver().CCPrintOptions ||
129 getArgs().hasArg(options::OPT_v)) && !getDriver().CCGenDiagnostics) {
130 raw_ostream *OS = &llvm::errs();
132 // Follow gcc implementation of CC_PRINT_OPTIONS; we could also cache the
134 if (getDriver().CCPrintOptions && getDriver().CCPrintOptionsFilename) {
136 OS = new llvm::raw_fd_ostream(getDriver().CCPrintOptionsFilename, EC,
137 llvm::sys::fs::F_Append |
138 llvm::sys::fs::F_Text);
140 getDriver().Diag(clang::diag::err_drv_cc_print_options_failure)
148 if (getDriver().CCPrintOptions)
149 *OS << "[Logging clang options]";
151 C.Print(*OS, "\n", /*Quote=*/getDriver().CCPrintOptions);
153 if (OS != &llvm::errs())
158 bool ExecutionFailed;
159 int Res = C.Execute(Redirects, &Error, &ExecutionFailed);
160 if (!Error.empty()) {
161 assert(Res && "Error string set with 0 result code!");
162 getDriver().Diag(clang::diag::err_drv_command_failure) << Error;
168 return ExecutionFailed ? 1 : Res;
171 typedef SmallVectorImpl< std::pair<int, const Command *> > FailingCommandList;
173 static bool ActionFailed(const Action *A,
174 const FailingCommandList &FailingCommands) {
176 if (FailingCommands.empty())
179 for (FailingCommandList::const_iterator CI = FailingCommands.begin(),
180 CE = FailingCommands.end(); CI != CE; ++CI)
181 if (A == &(CI->second->getSource()))
184 for (Action::const_iterator AI = A->begin(), AE = A->end(); AI != AE; ++AI)
185 if (ActionFailed(*AI, FailingCommands))
191 static bool InputsOk(const Command &C,
192 const FailingCommandList &FailingCommands) {
193 return !ActionFailed(&C.getSource(), FailingCommands);
196 void Compilation::ExecuteJobs(const JobList &Jobs,
197 FailingCommandList &FailingCommands) const {
198 for (const auto &Job : Jobs) {
199 if (!InputsOk(Job, FailingCommands))
201 const Command *FailingCommand = nullptr;
202 if (int Res = ExecuteCommand(Job, FailingCommand))
203 FailingCommands.push_back(std::make_pair(Res, FailingCommand));
207 void Compilation::initCompilationForDiagnostics() {
208 ForDiagnostics = true;
210 // Free actions and jobs.
211 DeleteContainerPointers(Actions);
214 // Clear temporary/results file lists.
217 FailureResultFiles.clear();
219 // Remove any user specified output. Claim any unclaimed arguments, so as
220 // to avoid emitting warnings about unused args.
221 OptSpecifier OutputOpts[] = { options::OPT_o, options::OPT_MD,
223 for (unsigned i = 0, e = llvm::array_lengthof(OutputOpts); i != e; ++i) {
224 if (TranslatedArgs->hasArg(OutputOpts[i]))
225 TranslatedArgs->eraseArg(OutputOpts[i]);
227 TranslatedArgs->ClaimAllArgs();
229 // Redirect stdout/stderr to /dev/null.
230 Redirects = new const StringRef*[3]();
231 Redirects[0] = nullptr;
232 Redirects[1] = new StringRef();
233 Redirects[2] = new StringRef();
236 StringRef Compilation::getSysRoot() const {
237 return getDriver().SysRoot;