243 lines
7.8 KiB
C++
243 lines
7.8 KiB
C++
//===--- Compilation.cpp - Compilation Task Implementation ----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Driver/Compilation.h"
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#include "clang/Driver/Action.h"
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#include "clang/Driver/Driver.h"
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#include "clang/Driver/DriverDiagnostic.h"
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#include "clang/Driver/Options.h"
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#include "clang/Driver/ToolChain.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Option/ArgList.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/raw_ostream.h"
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#include <errno.h>
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#include <sys/stat.h>
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using namespace clang::driver;
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using namespace clang;
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using namespace llvm::opt;
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Compilation::Compilation(const Driver &D, const ToolChain &_DefaultToolChain,
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InputArgList *_Args, DerivedArgList *_TranslatedArgs)
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: TheDriver(D), DefaultToolChain(_DefaultToolChain), Args(_Args),
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TranslatedArgs(_TranslatedArgs), Redirects(0) {
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}
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Compilation::~Compilation() {
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delete TranslatedArgs;
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delete Args;
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// Free any derived arg lists.
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for (llvm::DenseMap<std::pair<const ToolChain*, const char*>,
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DerivedArgList*>::iterator it = TCArgs.begin(),
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ie = TCArgs.end(); it != ie; ++it)
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if (it->second != TranslatedArgs)
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delete it->second;
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// Free the actions, if built.
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for (ActionList::iterator it = Actions.begin(), ie = Actions.end();
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it != ie; ++it)
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delete *it;
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// Free redirections of stdout/stderr.
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if (Redirects) {
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delete Redirects[1];
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delete Redirects[2];
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delete [] Redirects;
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}
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}
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const DerivedArgList &Compilation::getArgsForToolChain(const ToolChain *TC,
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const char *BoundArch) {
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if (!TC)
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TC = &DefaultToolChain;
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DerivedArgList *&Entry = TCArgs[std::make_pair(TC, BoundArch)];
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if (!Entry) {
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Entry = TC->TranslateArgs(*TranslatedArgs, BoundArch);
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if (!Entry)
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Entry = TranslatedArgs;
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}
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return *Entry;
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}
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bool Compilation::CleanupFile(const char *File, bool IssueErrors) const {
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std::string P(File);
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// FIXME: Why are we trying to remove files that we have not created? For
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// example we should only try to remove a temporary assembly file if
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// "clang -cc1" succeed in writing it. Was this a workaround for when
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// clang was writing directly to a .s file and sometimes leaving it behind
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// during a failure?
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// FIXME: If this is necessary, we can still try to split
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// llvm::sys::fs::remove into a removeFile and a removeDir and avoid the
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// duplicated stat from is_regular_file.
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// Don't try to remove files which we don't have write access to (but may be
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// able to remove), or non-regular files. Underlying tools may have
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// intentionally not overwritten them.
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if (!llvm::sys::fs::can_write(File) || !llvm::sys::fs::is_regular_file(File))
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return true;
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if (llvm::error_code EC = llvm::sys::fs::remove(File)) {
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// Failure is only failure if the file exists and is "regular". We checked
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// for it being regular before, and llvm::sys::fs::remove ignores ENOENT,
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// so we don't need to check again.
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if (IssueErrors)
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getDriver().Diag(clang::diag::err_drv_unable_to_remove_file)
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<< EC.message();
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return false;
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}
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return true;
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}
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bool Compilation::CleanupFileList(const ArgStringList &Files,
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bool IssueErrors) const {
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bool Success = true;
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for (ArgStringList::const_iterator
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it = Files.begin(), ie = Files.end(); it != ie; ++it)
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Success &= CleanupFile(*it, IssueErrors);
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return Success;
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}
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bool Compilation::CleanupFileMap(const ArgStringMap &Files,
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const JobAction *JA,
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bool IssueErrors) const {
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bool Success = true;
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for (ArgStringMap::const_iterator
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it = Files.begin(), ie = Files.end(); it != ie; ++it) {
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// If specified, only delete the files associated with the JobAction.
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// Otherwise, delete all files in the map.
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if (JA && it->first != JA)
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continue;
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Success &= CleanupFile(it->second, IssueErrors);
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}
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return Success;
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}
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int Compilation::ExecuteCommand(const Command &C,
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const Command *&FailingCommand) const {
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if ((getDriver().CCPrintOptions ||
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getArgs().hasArg(options::OPT_v)) && !getDriver().CCGenDiagnostics) {
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raw_ostream *OS = &llvm::errs();
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// Follow gcc implementation of CC_PRINT_OPTIONS; we could also cache the
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// output stream.
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if (getDriver().CCPrintOptions && getDriver().CCPrintOptionsFilename) {
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std::string Error;
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OS = new llvm::raw_fd_ostream(getDriver().CCPrintOptionsFilename, Error,
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llvm::sys::fs::F_Append);
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if (!Error.empty()) {
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getDriver().Diag(clang::diag::err_drv_cc_print_options_failure)
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<< Error;
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FailingCommand = &C;
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delete OS;
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return 1;
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}
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}
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if (getDriver().CCPrintOptions)
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*OS << "[Logging clang options]";
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C.Print(*OS, "\n", /*Quote=*/getDriver().CCPrintOptions);
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if (OS != &llvm::errs())
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delete OS;
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}
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std::string Error;
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bool ExecutionFailed;
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int Res = C.Execute(Redirects, &Error, &ExecutionFailed);
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if (!Error.empty()) {
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assert(Res && "Error string set with 0 result code!");
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getDriver().Diag(clang::diag::err_drv_command_failure) << Error;
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}
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if (Res)
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FailingCommand = &C;
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return ExecutionFailed ? 1 : Res;
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}
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typedef SmallVectorImpl< std::pair<int, const Command *> > FailingCommandList;
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static bool ActionFailed(const Action *A,
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const FailingCommandList &FailingCommands) {
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if (FailingCommands.empty())
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return false;
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for (FailingCommandList::const_iterator CI = FailingCommands.begin(),
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CE = FailingCommands.end(); CI != CE; ++CI)
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if (A == &(CI->second->getSource()))
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return true;
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for (Action::const_iterator AI = A->begin(), AE = A->end(); AI != AE; ++AI)
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if (ActionFailed(*AI, FailingCommands))
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return true;
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return false;
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}
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static bool InputsOk(const Command &C,
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const FailingCommandList &FailingCommands) {
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return !ActionFailed(&C.getSource(), FailingCommands);
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}
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void Compilation::ExecuteJob(const Job &J,
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FailingCommandList &FailingCommands) const {
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if (const Command *C = dyn_cast<Command>(&J)) {
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if (!InputsOk(*C, FailingCommands))
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return;
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const Command *FailingCommand = 0;
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if (int Res = ExecuteCommand(*C, FailingCommand))
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FailingCommands.push_back(std::make_pair(Res, FailingCommand));
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} else {
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const JobList *Jobs = cast<JobList>(&J);
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for (JobList::const_iterator it = Jobs->begin(), ie = Jobs->end();
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it != ie; ++it)
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ExecuteJob(**it, FailingCommands);
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}
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}
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void Compilation::initCompilationForDiagnostics() {
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// Free actions and jobs.
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DeleteContainerPointers(Actions);
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Jobs.clear();
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// Clear temporary/results file lists.
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TempFiles.clear();
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ResultFiles.clear();
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FailureResultFiles.clear();
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// Remove any user specified output. Claim any unclaimed arguments, so as
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// to avoid emitting warnings about unused args.
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OptSpecifier OutputOpts[] = { options::OPT_o, options::OPT_MD,
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options::OPT_MMD };
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for (unsigned i = 0, e = llvm::array_lengthof(OutputOpts); i != e; ++i) {
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if (TranslatedArgs->hasArg(OutputOpts[i]))
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TranslatedArgs->eraseArg(OutputOpts[i]);
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}
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TranslatedArgs->ClaimAllArgs();
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// Redirect stdout/stderr to /dev/null.
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Redirects = new const StringRef*[3]();
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Redirects[0] = 0;
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Redirects[1] = new const StringRef();
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Redirects[2] = new const StringRef();
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}
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StringRef Compilation::getSysRoot() const {
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return getDriver().SysRoot;
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}
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