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