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Diffstat (limited to 'clang/lib/Driver/Driver.cpp')
| -rw-r--r-- | clang/lib/Driver/Driver.cpp | 1789 |
1 files changed, 1789 insertions, 0 deletions
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp new file mode 100644 index 0000000..3ddac69 --- /dev/null +++ b/clang/lib/Driver/Driver.cpp @@ -0,0 +1,1789 @@ +//===--- Driver.cpp - Clang GCC Compatible Driver -------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "clang/Driver/Driver.h" + +#include "clang/Driver/Action.h" +#include "clang/Driver/Arg.h" +#include "clang/Driver/ArgList.h" +#include "clang/Driver/Compilation.h" +#include "clang/Driver/DriverDiagnostic.h" +#include "clang/Driver/Job.h" +#include "clang/Driver/OptTable.h" +#include "clang/Driver/Option.h" +#include "clang/Driver/Options.h" +#include "clang/Driver/Tool.h" +#include "clang/Driver/ToolChain.h" + +#include "clang/Basic/Version.h" + +#include "llvm/ADT/ArrayRef.h" +#include "llvm/ADT/StringSet.h" +#include "llvm/ADT/OwningPtr.h" +#include "llvm/Support/ErrorHandling.h" +#include "llvm/Support/PrettyStackTrace.h" +#include "llvm/Support/raw_ostream.h" +#include "llvm/Support/FileSystem.h" +#include "llvm/Support/Path.h" +#include "llvm/Support/Program.h" + +#include "InputInfo.h" +#include "ToolChains.h" + +#include <map> + +#include "clang/Config/config.h" + +using namespace clang::driver; +using namespace clang; + +Driver::Driver(StringRef ClangExecutable, + StringRef DefaultTargetTriple, + StringRef DefaultImageName, + bool IsProduction, + DiagnosticsEngine &Diags) + : Opts(createDriverOptTable()), Diags(Diags), + ClangExecutable(ClangExecutable), SysRoot(DEFAULT_SYSROOT), + UseStdLib(true), DefaultTargetTriple(DefaultTargetTriple), + DefaultImageName(DefaultImageName), + DriverTitle("clang \"gcc-compatible\" driver"), + CCPrintOptionsFilename(0), CCPrintHeadersFilename(0), + CCLogDiagnosticsFilename(0), CCCIsCXX(false), + CCCIsCPP(false),CCCEcho(false), CCCPrintBindings(false), + CCPrintOptions(false), CCPrintHeaders(false), CCLogDiagnostics(false), + CCGenDiagnostics(false), CCCGenericGCCName(""), CheckInputsExist(true), + CCCUseClang(true), CCCUseClangCXX(true), CCCUseClangCPP(true), + CCCUsePCH(true), SuppressMissingInputWarning(false) { + if (IsProduction) { + // In a "production" build, only use clang on architectures we expect to + // work. + // + // During development its more convenient to always have the driver use + // clang, but we don't want users to be confused when things don't work, or + // to file bugs for things we don't support. + CCCClangArchs.insert(llvm::Triple::x86); + CCCClangArchs.insert(llvm::Triple::x86_64); + CCCClangArchs.insert(llvm::Triple::arm); + } + + Name = llvm::sys::path::stem(ClangExecutable); + Dir = llvm::sys::path::parent_path(ClangExecutable); + + // Compute the path to the resource directory. + StringRef ClangResourceDir(CLANG_RESOURCE_DIR); + SmallString<128> P(Dir); + if (ClangResourceDir != "") + llvm::sys::path::append(P, ClangResourceDir); + else + llvm::sys::path::append(P, "..", "lib", "clang", CLANG_VERSION_STRING); + ResourceDir = P.str(); +} + +Driver::~Driver() { + delete Opts; + + for (llvm::StringMap<ToolChain *>::iterator I = ToolChains.begin(), + E = ToolChains.end(); + I != E; ++I) + delete I->second; +} + +InputArgList *Driver::ParseArgStrings(ArrayRef<const char *> ArgList) { + llvm::PrettyStackTraceString CrashInfo("Command line argument parsing"); + unsigned MissingArgIndex, MissingArgCount; + InputArgList *Args = getOpts().ParseArgs(ArgList.begin(), ArgList.end(), + MissingArgIndex, MissingArgCount); + + // Check for missing argument error. + if (MissingArgCount) + Diag(clang::diag::err_drv_missing_argument) + << Args->getArgString(MissingArgIndex) << MissingArgCount; + + // Check for unsupported options. + for (ArgList::const_iterator it = Args->begin(), ie = Args->end(); + it != ie; ++it) { + Arg *A = *it; + if (A->getOption().isUnsupported()) { + Diag(clang::diag::err_drv_unsupported_opt) << A->getAsString(*Args); + continue; + } + + // Warn about -mcpu= without an argument. + if (A->getOption().matches(options::OPT_mcpu_EQ) && + A->containsValue("")) { + Diag(clang::diag::warn_drv_empty_joined_argument) << A->getAsString(*Args); + } + } + + return Args; +} + +// Determine which compilation mode we are in. We look for options which +// affect the phase, starting with the earliest phases, and record which +// option we used to determine the final phase. +phases::ID Driver::getFinalPhase(const DerivedArgList &DAL, Arg **FinalPhaseArg) +const { + Arg *PhaseArg = 0; + phases::ID FinalPhase; + + // -{E,M,MM} only run the preprocessor. + if (CCCIsCPP || + (PhaseArg = DAL.getLastArg(options::OPT_E)) || + (PhaseArg = DAL.getLastArg(options::OPT_M, options::OPT_MM))) { + FinalPhase = phases::Preprocess; + + // -{fsyntax-only,-analyze,emit-ast,S} only run up to the compiler. + } else if ((PhaseArg = DAL.getLastArg(options::OPT_fsyntax_only)) || + (PhaseArg = DAL.getLastArg(options::OPT_rewrite_objc)) || + (PhaseArg = DAL.getLastArg(options::OPT_rewrite_legacy_objc)) || + (PhaseArg = DAL.getLastArg(options::OPT__migrate)) || + (PhaseArg = DAL.getLastArg(options::OPT__analyze, + options::OPT__analyze_auto)) || + (PhaseArg = DAL.getLastArg(options::OPT_emit_ast)) || + (PhaseArg = DAL.getLastArg(options::OPT_S))) { + FinalPhase = phases::Compile; + + // -c only runs up to the assembler. + } else if ((PhaseArg = DAL.getLastArg(options::OPT_c))) { + FinalPhase = phases::Assemble; + + // Otherwise do everything. + } else + FinalPhase = phases::Link; + + if (FinalPhaseArg) + *FinalPhaseArg = PhaseArg; + + return FinalPhase; +} + +DerivedArgList *Driver::TranslateInputArgs(const InputArgList &Args) const { + DerivedArgList *DAL = new DerivedArgList(Args); + + bool HasNostdlib = Args.hasArg(options::OPT_nostdlib); + for (ArgList::const_iterator it = Args.begin(), + ie = Args.end(); it != ie; ++it) { + const Arg *A = *it; + + // Unfortunately, we have to parse some forwarding options (-Xassembler, + // -Xlinker, -Xpreprocessor) because we either integrate their functionality + // (assembler and preprocessor), or bypass a previous driver ('collect2'). + + // Rewrite linker options, to replace --no-demangle with a custom internal + // option. + if ((A->getOption().matches(options::OPT_Wl_COMMA) || + A->getOption().matches(options::OPT_Xlinker)) && + A->containsValue("--no-demangle")) { + // Add the rewritten no-demangle argument. + DAL->AddFlagArg(A, Opts->getOption(options::OPT_Z_Xlinker__no_demangle)); + + // Add the remaining values as Xlinker arguments. + for (unsigned i = 0, e = A->getNumValues(); i != e; ++i) + if (StringRef(A->getValue(Args, i)) != "--no-demangle") + DAL->AddSeparateArg(A, Opts->getOption(options::OPT_Xlinker), + A->getValue(Args, i)); + + continue; + } + + // Rewrite preprocessor options, to replace -Wp,-MD,FOO which is used by + // some build systems. We don't try to be complete here because we don't + // care to encourage this usage model. + if (A->getOption().matches(options::OPT_Wp_COMMA) && + A->getNumValues() == 2 && + (A->getValue(Args, 0) == StringRef("-MD") || + A->getValue(Args, 0) == StringRef("-MMD"))) { + // Rewrite to -MD/-MMD along with -MF. + if (A->getValue(Args, 0) == StringRef("-MD")) + DAL->AddFlagArg(A, Opts->getOption(options::OPT_MD)); + else + DAL->AddFlagArg(A, Opts->getOption(options::OPT_MMD)); + DAL->AddSeparateArg(A, Opts->getOption(options::OPT_MF), + A->getValue(Args, 1)); + continue; + } + + // Rewrite reserved library names. + if (A->getOption().matches(options::OPT_l)) { + StringRef Value = A->getValue(Args); + + // Rewrite unless -nostdlib is present. + if (!HasNostdlib && Value == "stdc++") { + DAL->AddFlagArg(A, Opts->getOption( + options::OPT_Z_reserved_lib_stdcxx)); + continue; + } + + // Rewrite unconditionally. + if (Value == "cc_kext") { + DAL->AddFlagArg(A, Opts->getOption( + options::OPT_Z_reserved_lib_cckext)); + continue; + } + } + + DAL->append(*it); + } + + // Add a default value of -mlinker-version=, if one was given and the user + // didn't specify one. +#if defined(HOST_LINK_VERSION) + if (!Args.hasArg(options::OPT_mlinker_version_EQ)) { + DAL->AddJoinedArg(0, Opts->getOption(options::OPT_mlinker_version_EQ), + HOST_LINK_VERSION); + DAL->getLastArg(options::OPT_mlinker_version_EQ)->claim(); + } +#endif + + return DAL; +} + +Compilation *Driver::BuildCompilation(ArrayRef<const char *> ArgList) { + llvm::PrettyStackTraceString CrashInfo("Compilation construction"); + + // FIXME: Handle environment options which affect driver behavior, somewhere + // (client?). GCC_EXEC_PREFIX, LPATH, CC_PRINT_OPTIONS. + + if (char *env = ::getenv("COMPILER_PATH")) { + StringRef CompilerPath = env; + while (!CompilerPath.empty()) { + std::pair<StringRef, StringRef> Split = CompilerPath.split(':'); + PrefixDirs.push_back(Split.first); + CompilerPath = Split.second; + } + } + + // FIXME: What are we going to do with -V and -b? + + // FIXME: This stuff needs to go into the Compilation, not the driver. + bool CCCPrintOptions = false, CCCPrintActions = false; + + InputArgList *Args = ParseArgStrings(ArgList.slice(1)); + + // -no-canonical-prefixes is used very early in main. + Args->ClaimAllArgs(options::OPT_no_canonical_prefixes); + + // Ignore -pipe. + Args->ClaimAllArgs(options::OPT_pipe); + + // Extract -ccc args. + // + // FIXME: We need to figure out where this behavior should live. Most of it + // should be outside in the client; the parts that aren't should have proper + // options, either by introducing new ones or by overloading gcc ones like -V + // or -b. + CCCPrintOptions = Args->hasArg(options::OPT_ccc_print_options); + CCCPrintActions = Args->hasArg(options::OPT_ccc_print_phases); + CCCPrintBindings = Args->hasArg(options::OPT_ccc_print_bindings); + CCCIsCXX = Args->hasArg(options::OPT_ccc_cxx) || CCCIsCXX; + CCCEcho = Args->hasArg(options::OPT_ccc_echo); + if (const Arg *A = Args->getLastArg(options::OPT_ccc_gcc_name)) + CCCGenericGCCName = A->getValue(*Args); + CCCUseClangCXX = Args->hasFlag(options::OPT_ccc_clang_cxx, + options::OPT_ccc_no_clang_cxx, + CCCUseClangCXX); + CCCUsePCH = Args->hasFlag(options::OPT_ccc_pch_is_pch, + options::OPT_ccc_pch_is_pth); + CCCUseClang = !Args->hasArg(options::OPT_ccc_no_clang); + CCCUseClangCPP = !Args->hasArg(options::OPT_ccc_no_clang_cpp); + if (const Arg *A = Args->getLastArg(options::OPT_ccc_clang_archs)) { + StringRef Cur = A->getValue(*Args); + + CCCClangArchs.clear(); + while (!Cur.empty()) { + std::pair<StringRef, StringRef> Split = Cur.split(','); + + if (!Split.first.empty()) { + llvm::Triple::ArchType Arch = + llvm::Triple(Split.first, "", "").getArch(); + + if (Arch == llvm::Triple::UnknownArch) + Diag(clang::diag::err_drv_invalid_arch_name) << Split.first; + + CCCClangArchs.insert(Arch); + } + + Cur = Split.second; + } + } + // FIXME: DefaultTargetTriple is used by the target-prefixed calls to as/ld + // and getToolChain is const. + if (const Arg *A = Args->getLastArg(options::OPT_target)) + DefaultTargetTriple = A->getValue(*Args); + if (const Arg *A = Args->getLastArg(options::OPT_ccc_install_dir)) + Dir = InstalledDir = A->getValue(*Args); + for (arg_iterator it = Args->filtered_begin(options::OPT_B), + ie = Args->filtered_end(); it != ie; ++it) { + const Arg *A = *it; + A->claim(); + PrefixDirs.push_back(A->getValue(*Args, 0)); + } + if (const Arg *A = Args->getLastArg(options::OPT__sysroot_EQ)) + SysRoot = A->getValue(*Args); + if (Args->hasArg(options::OPT_nostdlib)) + UseStdLib = false; + + // Perform the default argument translations. + DerivedArgList *TranslatedArgs = TranslateInputArgs(*Args); + + // Owned by the host. + const ToolChain &TC = getToolChain(*Args); + + // The compilation takes ownership of Args. + Compilation *C = new Compilation(*this, TC, Args, TranslatedArgs); + + // FIXME: This behavior shouldn't be here. + if (CCCPrintOptions) { + PrintOptions(C->getInputArgs()); + return C; + } + + if (!HandleImmediateArgs(*C)) + return C; + + // Construct the list of inputs. + InputList Inputs; + BuildInputs(C->getDefaultToolChain(), C->getArgs(), Inputs); + + // Construct the list of abstract actions to perform for this compilation. On + // Darwin target OSes this uses the driver-driver and universal actions. + if (TC.getTriple().isOSDarwin()) + BuildUniversalActions(C->getDefaultToolChain(), C->getArgs(), + Inputs, C->getActions()); + else + BuildActions(C->getDefaultToolChain(), C->getArgs(), Inputs, + C->getActions()); + + if (CCCPrintActions) { + PrintActions(*C); + return C; + } + + BuildJobs(*C); + + return C; +} + +// When clang crashes, produce diagnostic information including the fully +// preprocessed source file(s). Request that the developer attach the +// diagnostic information to a bug report. +void Driver::generateCompilationDiagnostics(Compilation &C, + const Command *FailingCommand) { + if (C.getArgs().hasArg(options::OPT_fno_crash_diagnostics)) + return; + + // Don't try to generate diagnostics for link jobs. + if (FailingCommand->getCreator().isLinkJob()) + return; + + Diag(clang::diag::note_drv_command_failed_diag_msg) + << "Please submit a bug report to " BUG_REPORT_URL " and include command" + " line arguments and all diagnostic information."; + + // Suppress driver output and emit preprocessor output to temp file. + CCCIsCPP = true; + CCGenDiagnostics = true; + + // Save the original job command(s). + std::string Cmd; + llvm::raw_string_ostream OS(Cmd); + C.PrintJob(OS, C.getJobs(), "\n", false); + OS.flush(); + + // Clear stale state and suppress tool output. + C.initCompilationForDiagnostics(); + Diags.Reset(); + + // Construct the list of inputs. + InputList Inputs; + BuildInputs(C.getDefaultToolChain(), C.getArgs(), Inputs); + + for (InputList::iterator it = Inputs.begin(), ie = Inputs.end(); it != ie;) { + bool IgnoreInput = false; + + // Ignore input from stdin or any inputs that cannot be preprocessed. + if (!strcmp(it->second->getValue(C.getArgs()), "-")) { + Diag(clang::diag::note_drv_command_failed_diag_msg) + << "Error generating preprocessed source(s) - ignoring input from stdin" + "."; + IgnoreInput = true; + } else if (types::getPreprocessedType(it->first) == types::TY_INVALID) { + IgnoreInput = true; + } + + if (IgnoreInput) { + it = Inputs.erase(it); + ie = Inputs.end(); + } else { + ++it; + } + } + + // Don't attempt to generate preprocessed files if multiple -arch options are + // used, unless they're all duplicates. + llvm::StringSet<> ArchNames; + for (ArgList::const_iterator it = C.getArgs().begin(), ie = C.getArgs().end(); + it != ie; ++it) { + Arg *A = *it; + if (A->getOption().matches(options::OPT_arch)) { + StringRef ArchName = A->getValue(C.getArgs()); + ArchNames.insert(ArchName); + } + } + if (ArchNames.size() > 1) { + Diag(clang::diag::note_drv_command_failed_diag_msg) + << "Error generating preprocessed source(s) - cannot generate " + "preprocessed source with multiple -arch options."; + return; + } + + if (Inputs.empty()) { + Diag(clang::diag::note_drv_command_failed_diag_msg) + << "Error generating preprocessed source(s) - no preprocessable inputs."; + return; + } + + // Construct the list of abstract actions to perform for this compilation. On + // Darwin OSes this uses the driver-driver and builds universal actions. + const ToolChain &TC = C.getDefaultToolChain(); + if (TC.getTriple().isOSDarwin()) + BuildUniversalActions(TC, C.getArgs(), Inputs, C.getActions()); + else + BuildActions(TC, C.getArgs(), Inputs, C.getActions()); + + BuildJobs(C); + + // If there were errors building the compilation, quit now. + if (Diags.hasErrorOccurred()) { + Diag(clang::diag::note_drv_command_failed_diag_msg) + << "Error generating preprocessed source(s)."; + return; + } + + // Generate preprocessed output. + FailingCommand = 0; + int Res = C.ExecuteJob(C.getJobs(), FailingCommand); + + // If the command succeeded, we are done. + if (Res == 0) { + Diag(clang::diag::note_drv_command_failed_diag_msg) + << "Preprocessed source(s) and associated run script(s) are located at:"; + ArgStringList Files = C.getTempFiles(); + for (ArgStringList::const_iterator it = Files.begin(), ie = Files.end(); + it != ie; ++it) { + Diag(clang::diag::note_drv_command_failed_diag_msg) << *it; + + std::string Err; + std::string Script = StringRef(*it).rsplit('.').first; + Script += ".sh"; + llvm::raw_fd_ostream ScriptOS(Script.c_str(), Err, + llvm::raw_fd_ostream::F_Excl | + llvm::raw_fd_ostream::F_Binary); + if (!Err.empty()) { + Diag(clang::diag::note_drv_command_failed_diag_msg) + << "Error generating run script: " + Script + " " + Err; + } else { + ScriptOS << Cmd; + Diag(clang::diag::note_drv_command_failed_diag_msg) << Script; + } + } + } else { + // Failure, remove preprocessed files. + if (!C.getArgs().hasArg(options::OPT_save_temps)) + C.CleanupFileList(C.getTempFiles(), true); + + Diag(clang::diag::note_drv_command_failed_diag_msg) + << "Error generating preprocessed source(s)."; + } +} + +int Driver::ExecuteCompilation(const Compilation &C, + const Command *&FailingCommand) const { + // Just print if -### was present. + if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) { + C.PrintJob(llvm::errs(), C.getJobs(), "\n", true); + return 0; + } + + // If there were errors building the compilation, quit now. + if (Diags.hasErrorOccurred()) + return 1; + + int Res = C.ExecuteJob(C.getJobs(), FailingCommand); + + // Remove temp files. + C.CleanupFileList(C.getTempFiles()); + + // If the command succeeded, we are done. + if (Res == 0) + return Res; + + // Otherwise, remove result files as well. + if (!C.getArgs().hasArg(options::OPT_save_temps)) { + C.CleanupFileList(C.getResultFiles(), true); + + // Failure result files are valid unless we crashed. + if (Res < 0) { + C.CleanupFileList(C.getFailureResultFiles(), true); +#ifdef _WIN32 + // Exit status should not be negative on Win32, + // unless abnormal termination. + Res = 1; +#endif + } + } + + // Print extra information about abnormal failures, if possible. + // + // This is ad-hoc, but we don't want to be excessively noisy. If the result + // status was 1, assume the command failed normally. In particular, if it was + // the compiler then assume it gave a reasonable error code. Failures in other + // tools are less common, and they generally have worse diagnostics, so always + // print the diagnostic there. + const Tool &FailingTool = FailingCommand->getCreator(); + + if (!FailingCommand->getCreator().hasGoodDiagnostics() || Res != 1) { + // FIXME: See FIXME above regarding result code interpretation. + if (Res < 0) + Diag(clang::diag::err_drv_command_signalled) + << FailingTool.getShortName(); + else + Diag(clang::diag::err_drv_command_failed) + << FailingTool.getShortName() << Res; + } + + return Res; +} + +void Driver::PrintOptions(const ArgList &Args) const { + unsigned i = 0; + for (ArgList::const_iterator it = Args.begin(), ie = Args.end(); + it != ie; ++it, ++i) { + Arg *A = *it; + llvm::errs() << "Option " << i << " - " + << "Name: \"" << A->getOption().getName() << "\", " + << "Values: {"; + for (unsigned j = 0; j < A->getNumValues(); ++j) { + if (j) + llvm::errs() << ", "; + llvm::errs() << '"' << A->getValue(Args, j) << '"'; + } + llvm::errs() << "}\n"; + } +} + +void Driver::PrintHelp(bool ShowHidden) const { + getOpts().PrintHelp(llvm::outs(), Name.c_str(), DriverTitle.c_str(), + ShowHidden); +} + +void Driver::PrintVersion(const Compilation &C, raw_ostream &OS) const { + // FIXME: The following handlers should use a callback mechanism, we don't + // know what the client would like to do. + OS << getClangFullVersion() << '\n'; + const ToolChain &TC = C.getDefaultToolChain(); + OS << "Target: " << TC.getTripleString() << '\n'; + + // Print the threading model. + // + // FIXME: Implement correctly. + OS << "Thread model: " << "posix" << '\n'; +} + +/// PrintDiagnosticCategories - Implement the --print-diagnostic-categories +/// option. +static void PrintDiagnosticCategories(raw_ostream &OS) { + // Skip the empty category. + for (unsigned i = 1, max = DiagnosticIDs::getNumberOfCategories(); + i != max; ++i) + OS << i << ',' << DiagnosticIDs::getCategoryNameFromID(i) << '\n'; +} + +bool Driver::HandleImmediateArgs(const Compilation &C) { + // The order these options are handled in gcc is all over the place, but we + // don't expect inconsistencies w.r.t. that to matter in practice. + + if (C.getArgs().hasArg(options::OPT_dumpmachine)) { + llvm::outs() << C.getDefaultToolChain().getTripleString() << '\n'; + return false; + } + + if (C.getArgs().hasArg(options::OPT_dumpversion)) { + // Since -dumpversion is only implemented for pedantic GCC compatibility, we + // return an answer which matches our definition of __VERSION__. + // + // If we want to return a more correct answer some day, then we should + // introduce a non-pedantically GCC compatible mode to Clang in which we + // provide sensible definitions for -dumpversion, __VERSION__, etc. + llvm::outs() << "4.2.1\n"; + return false; + } + + if (C.getArgs().hasArg(options::OPT__print_diagnostic_categories)) { + PrintDiagnosticCategories(llvm::outs()); + return false; + } + + if (C.getArgs().hasArg(options::OPT__help) || + C.getArgs().hasArg(options::OPT__help_hidden)) { + PrintHelp(C.getArgs().hasArg(options::OPT__help_hidden)); + return false; + } + + if (C.getArgs().hasArg(options::OPT__version)) { + // Follow gcc behavior and use stdout for --version and stderr for -v. + PrintVersion(C, llvm::outs()); + return false; + } + + if (C.getArgs().hasArg(options::OPT_v) || + C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) { + PrintVersion(C, llvm::errs()); + SuppressMissingInputWarning = true; + } + + const ToolChain &TC = C.getDefaultToolChain(); + if (C.getArgs().hasArg(options::OPT_print_search_dirs)) { + llvm::outs() << "programs: ="; + for (ToolChain::path_list::const_iterator it = TC.getProgramPaths().begin(), + ie = TC.getProgramPaths().end(); it != ie; ++it) { + if (it != TC.getProgramPaths().begin()) + llvm::outs() << ':'; + llvm::outs() << *it; + } + llvm::outs() << "\n"; + llvm::outs() << "libraries: =" << ResourceDir; + + StringRef sysroot = C.getSysRoot(); + + for (ToolChain::path_list::const_iterator it = TC.getFilePaths().begin(), + ie = TC.getFilePaths().end(); it != ie; ++it) { + llvm::outs() << ':'; + const char *path = it->c_str(); + if (path[0] == '=') + llvm::outs() << sysroot << path + 1; + else + llvm::outs() << path; + } + llvm::outs() << "\n"; + return false; + } + + // FIXME: The following handlers should use a callback mechanism, we don't + // know what the client would like to do. + if (Arg *A = C.getArgs().getLastArg(options::OPT_print_file_name_EQ)) { + llvm::outs() << GetFilePath(A->getValue(C.getArgs()), TC) << "\n"; + return false; + } + + if (Arg *A = C.getArgs().getLastArg(options::OPT_print_prog_name_EQ)) { + llvm::outs() << GetProgramPath(A->getValue(C.getArgs()), TC) << "\n"; + return false; + } + + if (C.getArgs().hasArg(options::OPT_print_libgcc_file_name)) { + llvm::outs() << GetFilePath("libgcc.a", TC) << "\n"; + return false; + } + + if (C.getArgs().hasArg(options::OPT_print_multi_lib)) { + // FIXME: We need tool chain support for this. + llvm::outs() << ".;\n"; + + switch (C.getDefaultToolChain().getTriple().getArch()) { + default: + break; + + case llvm::Triple::x86_64: + llvm::outs() << "x86_64;@m64" << "\n"; + break; + + case llvm::Triple::ppc64: + llvm::outs() << "ppc64;@m64" << "\n"; + break; + } + return false; + } + + // FIXME: What is the difference between print-multi-directory and + // print-multi-os-directory? + if (C.getArgs().hasArg(options::OPT_print_multi_directory) || + C.getArgs().hasArg(options::OPT_print_multi_os_directory)) { + switch (C.getDefaultToolChain().getTriple().getArch()) { + default: + case llvm::Triple::x86: + case llvm::Triple::ppc: + llvm::outs() << "." << "\n"; + break; + + case llvm::Triple::x86_64: + llvm::outs() << "x86_64" << "\n"; + break; + + case llvm::Triple::ppc64: + llvm::outs() << "ppc64" << "\n"; + break; + } + return false; + } + + return true; +} + +static unsigned PrintActions1(const Compilation &C, Action *A, + std::map<Action*, unsigned> &Ids) { + if (Ids.count(A)) + return Ids[A]; + + std::string str; + llvm::raw_string_ostream os(str); + + os << Action::getClassName(A->getKind()) << ", "; + if (InputAction *IA = dyn_cast<InputAction>(A)) { + os << "\"" << IA->getInputArg().getValue(C.getArgs()) << "\""; + } else if (BindArchAction *BIA = dyn_cast<BindArchAction>(A)) { + os << '"' << (BIA->getArchName() ? BIA->getArchName() : + C.getDefaultToolChain().getArchName()) << '"' + << ", {" << PrintActions1(C, *BIA->begin(), Ids) << "}"; + } else { + os << "{"; + for (Action::iterator it = A->begin(), ie = A->end(); it != ie;) { + os << PrintActions1(C, *it, Ids); + ++it; + if (it != ie) + os << ", "; + } + os << "}"; + } + + unsigned Id = Ids.size(); + Ids[A] = Id; + llvm::errs() << Id << ": " << os.str() << ", " + << types::getTypeName(A->getType()) << "\n"; + + return Id; +} + +void Driver::PrintActions(const Compilation &C) const { + std::map<Action*, unsigned> Ids; + for (ActionList::const_iterator it = C.getActions().begin(), + ie = C.getActions().end(); it != ie; ++it) + PrintActions1(C, *it, Ids); +} + +/// \brief Check whether the given input tree contains any compilation or +/// assembly actions. +static bool ContainsCompileOrAssembleAction(const Action *A) { + if (isa<CompileJobAction>(A) || isa<AssembleJobAction>(A)) + return true; + + for (Action::const_iterator it = A->begin(), ie = A->end(); it != ie; ++it) + if (ContainsCompileOrAssembleAction(*it)) + return true; + + return false; +} + +void Driver::BuildUniversalActions(const ToolChain &TC, + const DerivedArgList &Args, + const InputList &BAInputs, + ActionList &Actions) const { + llvm::PrettyStackTraceString CrashInfo("Building universal build actions"); + // Collect the list of architectures. Duplicates are allowed, but should only + // be handled once (in the order seen). + llvm::StringSet<> ArchNames; + SmallVector<const char *, 4> Archs; + for (ArgList::const_iterator it = Args.begin(), ie = Args.end(); + it != ie; ++it) { + Arg *A = *it; + + if (A->getOption().matches(options::OPT_arch)) { + // Validate the option here; we don't save the type here because its + // particular spelling may participate in other driver choices. + llvm::Triple::ArchType Arch = + llvm::Triple::getArchTypeForDarwinArchName(A->getValue(Args)); + if (Arch == llvm::Triple::UnknownArch) { + Diag(clang::diag::err_drv_invalid_arch_name) + << A->getAsString(Args); + continue; + } + + A->claim(); + if (ArchNames.insert(A->getValue(Args))) + Archs.push_back(A->getValue(Args)); + } + } + + // When there is no explicit arch for this platform, make sure we still bind + // the architecture (to the default) so that -Xarch_ is handled correctly. + if (!Archs.size()) + Archs.push_back(0); + + // FIXME: We killed off some others but these aren't yet detected in a + // functional manner. If we added information to jobs about which "auxiliary" + // files they wrote then we could detect the conflict these cause downstream. + if (Archs.size() > 1) { + // No recovery needed, the point of this is just to prevent + // overwriting the same files. + if (const Arg *A = Args.getLastArg(options::OPT_save_temps)) + Diag(clang::diag::err_drv_invalid_opt_with_multiple_archs) + << A->getAsString(Args); + } + + ActionList SingleActions; + BuildActions(TC, Args, BAInputs, SingleActions); + + // Add in arch bindings for every top level action, as well as lipo and + // dsymutil steps if needed. + for (unsigned i = 0, e = SingleActions.size(); i != e; ++i) { + Action *Act = SingleActions[i]; + + // Make sure we can lipo this kind of output. If not (and it is an actual + // output) then we disallow, since we can't create an output file with the + // right name without overwriting it. We could remove this oddity by just + // changing the output names to include the arch, which would also fix + // -save-temps. Compatibility wins for now. + + if (Archs.size() > 1 && !types::canLipoType(Act->getType())) + Diag(clang::diag::err_drv_invalid_output_with_multiple_archs) + << types::getTypeName(Act->getType()); + + ActionList Inputs; + for (unsigned i = 0, e = Archs.size(); i != e; ++i) { + Inputs.push_back(new BindArchAction(Act, Archs[i])); + if (i != 0) + Inputs.back()->setOwnsInputs(false); + } + + // Lipo if necessary, we do it this way because we need to set the arch flag + // so that -Xarch_ gets overwritten. + if (Inputs.size() == 1 || Act->getType() == types::TY_Nothing) + Actions.append(Inputs.begin(), Inputs.end()); + else + Actions.push_back(new LipoJobAction(Inputs, Act->getType())); + + // Handle debug info queries. + Arg *A = Args.getLastArg(options::OPT_g_Group); + if (A && !A->getOption().matches(options::OPT_g0) && + !A->getOption().matches(options::OPT_gstabs) && + ContainsCompileOrAssembleAction(Actions.back())) { + + // Add a 'dsymutil' step if necessary, when debug info is enabled and we + // have a compile input. We need to run 'dsymutil' ourselves in such cases + // because the debug info will refer to a temporary object file which is + // will be removed at the end of the compilation process. + if (Act->getType() == types::TY_Image) { + ActionList Inputs; + Inputs.push_back(Actions.back()); + Actions.pop_back(); + Actions.push_back(new DsymutilJobAction(Inputs, types::TY_dSYM)); + } + + // Verify the output (debug information only) if we passed '-verify'. + if (Args.hasArg(options::OPT_verify)) { + ActionList VerifyInputs; + VerifyInputs.push_back(Actions.back()); + Actions.pop_back(); + Actions.push_back(new VerifyJobAction(VerifyInputs, + types::TY_Nothing)); + } + } + } +} + +// Construct a the list of inputs and their types. +void Driver::BuildInputs(const ToolChain &TC, const DerivedArgList &Args, + InputList &Inputs) const { + // Track the current user specified (-x) input. We also explicitly track the + // argument used to set the type; we only want to claim the type when we + // actually use it, so we warn about unused -x arguments. + types::ID InputType = types::TY_Nothing; + Arg *InputTypeArg = 0; + + for (ArgList::const_iterator it = Args.begin(), ie = Args.end(); + it != ie; ++it) { + Arg *A = *it; + + if (isa<InputOption>(A->getOption())) { + const char *Value = A->getValue(Args); + types::ID Ty = types::TY_INVALID; + + // Infer the input type if necessary. + if (InputType == types::TY_Nothing) { + // If there was an explicit arg for this, claim it. + if (InputTypeArg) + InputTypeArg->claim(); + + // stdin must be handled specially. + if (memcmp(Value, "-", 2) == 0) { + // If running with -E, treat as a C input (this changes the builtin + // macros, for example). This may be overridden by -ObjC below. + // + // Otherwise emit an error but still use a valid type to avoid + // spurious errors (e.g., no inputs). + if (!Args.hasArgNoClaim(options::OPT_E) && !CCCIsCPP) + Diag(clang::diag::err_drv_unknown_stdin_type); + Ty = types::TY_C; + } else { + // Otherwise lookup by extension. + // Fallback is C if invoked as C preprocessor or Object otherwise. + // We use a host hook here because Darwin at least has its own + // idea of what .s is. + if (const char *Ext = strrchr(Value, '.')) + Ty = TC.LookupTypeForExtension(Ext + 1); + + if (Ty == types::TY_INVALID) { + if (CCCIsCPP) + Ty = types::TY_C; + else + Ty = types::TY_Object; + } + + // If the driver is invoked as C++ compiler (like clang++ or c++) it + // should autodetect some input files as C++ for g++ compatibility. + if (CCCIsCXX) { + types::ID OldTy = Ty; + Ty = types::lookupCXXTypeForCType(Ty); + + if (Ty != OldTy) + Diag(clang::diag::warn_drv_treating_input_as_cxx) + << getTypeName(OldTy) << getTypeName(Ty); + } + } + + // -ObjC and -ObjC++ override the default language, but only for "source + // files". We just treat everything that isn't a linker input as a + // source file. + // + // FIXME: Clean this up if we move the phase sequence into the type. + if (Ty != types::TY_Object) { + if (Args.hasArg(options::OPT_ObjC)) + Ty = types::TY_ObjC; + else if (Args.hasArg(options::OPT_ObjCXX)) + Ty = types::TY_ObjCXX; + } + } else { + assert(InputTypeArg && "InputType set w/o InputTypeArg"); + InputTypeArg->claim(); + Ty = InputType; + } + + // Check that the file exists, if enabled. + if (CheckInputsExist && memcmp(Value, "-", 2) != 0) { + SmallString<64> Path(Value); + if (Arg *WorkDir = Args.getLastArg(options::OPT_working_directory)) { + SmallString<64> Directory(WorkDir->getValue(Args)); + if (llvm::sys::path::is_absolute(Directory.str())) { + llvm::sys::path::append(Directory, Value); + Path.assign(Directory); + } + } + + bool exists = false; + if (llvm::sys::fs::exists(Path.c_str(), exists) || !exists) + Diag(clang::diag::err_drv_no_such_file) << Path.str(); + else + Inputs.push_back(std::make_pair(Ty, A)); + } else + Inputs.push_back(std::make_pair(Ty, A)); + + } else if (A->getOption().isLinkerInput()) { + // Just treat as object type, we could make a special type for this if + // necessary. + Inputs.push_back(std::make_pair(types::TY_Object, A)); + + } else if (A->getOption().matches(options::OPT_x)) { + InputTypeArg = A; + InputType = types::lookupTypeForTypeSpecifier(A->getValue(Args)); + A->claim(); + + // Follow gcc behavior and treat as linker input for invalid -x + // options. Its not clear why we shouldn't just revert to unknown; but + // this isn't very important, we might as well be bug compatible. + if (!InputType) { + Diag(clang::diag::err_drv_unknown_language) << A->getValue(Args); + InputType = types::TY_Object; + } + } + } + if (CCCIsCPP && Inputs.empty()) { + // If called as standalone preprocessor, stdin is processed + // if no other input is present. + unsigned Index = Args.getBaseArgs().MakeIndex("-"); + Arg *A = Opts->ParseOneArg(Args, Index); + A->claim(); + Inputs.push_back(std::make_pair(types::TY_C, A)); + } +} + +void Driver::BuildActions(const ToolChain &TC, const DerivedArgList &Args, + const InputList &Inputs, ActionList &Actions) const { + llvm::PrettyStackTraceString CrashInfo("Building compilation actions"); + + if (!SuppressMissingInputWarning && Inputs.empty()) { + Diag(clang::diag::err_drv_no_input_files); + return; + } + + Arg *FinalPhaseArg; + phases::ID FinalPhase = getFinalPhase(Args, &FinalPhaseArg); + + // Reject -Z* at the top level, these options should never have been exposed + // by gcc. + if (Arg *A = Args.getLastArg(options::OPT_Z_Joined)) + Diag(clang::diag::err_drv_use_of_Z_option) << A->getAsString(Args); + + // Construct the actions to perform. + ActionList LinkerInputs; + unsigned NumSteps = 0; + for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { + types::ID InputType = Inputs[i].first; + const Arg *InputArg = Inputs[i].second; + + NumSteps = types::getNumCompilationPhases(InputType); + assert(NumSteps && "Invalid number of steps!"); + + // If the first step comes after the final phase we are doing as part of + // this compilation, warn the user about it. + phases::ID InitialPhase = types::getCompilationPhase(InputType, 0); + if (InitialPhase > FinalPhase) { + // Claim here to avoid the more general unused warning. + InputArg->claim(); + + // Suppress all unused style warnings with -Qunused-arguments + if (Args.hasArg(options::OPT_Qunused_arguments)) + continue; + + // Special case '-E' warning on a previously preprocessed file to make + // more sense. + if (InitialPhase == phases::Compile && FinalPhase == phases::Preprocess && + getPreprocessedType(InputType) == types::TY_INVALID) + Diag(clang::diag::warn_drv_preprocessed_input_file_unused) + << InputArg->getAsString(Args) + << FinalPhaseArg->getOption().getName(); + else + Diag(clang::diag::warn_drv_input_file_unused) + << InputArg->getAsString(Args) + << getPhaseName(InitialPhase) + << FinalPhaseArg->getOption().getName(); + continue; + } + + // Build the pipeline for this file. + OwningPtr<Action> Current(new InputAction(*InputArg, InputType)); + for (unsigned i = 0; i != NumSteps; ++i) { + phases::ID Phase = types::getCompilationPhase(InputType, i); + + // We are done if this step is past what the user requested. + if (Phase > FinalPhase) + break; + + // Queue linker inputs. + if (Phase == phases::Link) { + assert(i + 1 == NumSteps && "linking must be final compilation step."); + LinkerInputs.push_back(Current.take()); + break; + } + + // Some types skip the assembler phase (e.g., llvm-bc), but we can't + // encode this in the steps because the intermediate type depends on + // arguments. Just special case here. + if (Phase == phases::Assemble && Current->getType() != types::TY_PP_Asm) + continue; + + // Otherwise construct the appropriate action. + Current.reset(ConstructPhaseAction(Args, Phase, Current.take())); + if (Current->getType() == types::TY_Nothing) + break; + } + + // If we ended with something, add to the output list. + if (Current) + Actions.push_back(Current.take()); + } + + // Add a link action if necessary. + if (!LinkerInputs.empty()) + Actions.push_back(new LinkJobAction(LinkerInputs, types::TY_Image)); + + // If we are linking, claim any options which are obviously only used for + // compilation. + if (FinalPhase == phases::Link && (NumSteps == 1)) + Args.ClaimAllArgs(options::OPT_CompileOnly_Group); +} + +Action *Driver::ConstructPhaseAction(const ArgList &Args, phases::ID Phase, + Action *Input) const { + llvm::PrettyStackTraceString CrashInfo("Constructing phase actions"); + // Build the appropriate action. + switch (Phase) { + case phases::Link: llvm_unreachable("link action invalid here."); + case phases::Preprocess: { + types::ID OutputTy; + // -{M, MM} alter the output type. + if (Args.hasArg(options::OPT_M, options::OPT_MM)) { + OutputTy = types::TY_Dependencies; + } else { + OutputTy = types::getPreprocessedType(Input->getType()); + assert(OutputTy != types::TY_INVALID && + "Cannot preprocess this input type!"); + } + return new PreprocessJobAction(Input, OutputTy); + } + case phases::Precompile: + return new PrecompileJobAction(Input, types::TY_PCH); + case phases::Compile: { + if (Args.hasArg(options::OPT_fsyntax_only)) { + return new CompileJobAction(Input, types::TY_Nothing); + } else if (Args.hasArg(options::OPT_rewrite_objc)) { + return new CompileJobAction(Input, types::TY_RewrittenObjC); + } else if (Args.hasArg(options::OPT_rewrite_legacy_objc)) { + return new CompileJobAction(Input, types::TY_RewrittenLegacyObjC); + } else if (Args.hasArg(options::OPT__analyze, options::OPT__analyze_auto)) { + return new AnalyzeJobAction(Input, types::TY_Plist); + } else if (Args.hasArg(options::OPT__migrate)) { + return new MigrateJobAction(Input, types::TY_Remap); + } else if (Args.hasArg(options::OPT_emit_ast)) { + return new CompileJobAction(Input, types::TY_AST); + } else if (IsUsingLTO(Args)) { + types::ID Output = + Args.hasArg(options::OPT_S) ? types::TY_LTO_IR : types::TY_LTO_BC; + return new CompileJobAction(Input, Output); + } else { + return new CompileJobAction(Input, types::TY_PP_Asm); + } + } + case phases::Assemble: + return new AssembleJobAction(Input, types::TY_Object); + } + + llvm_unreachable("invalid phase in ConstructPhaseAction"); +} + +bool Driver::IsUsingLTO(const ArgList &Args) const { + // Check for -emit-llvm or -flto. + if (Args.hasArg(options::OPT_emit_llvm) || + Args.hasFlag(options::OPT_flto, options::OPT_fno_lto, false)) + return true; + + // Check for -O4. + if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) + return A->getOption().matches(options::OPT_O4); + + return false; +} + +void Driver::BuildJobs(Compilation &C) const { + llvm::PrettyStackTraceString CrashInfo("Building compilation jobs"); + + Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o); + + // It is an error to provide a -o option if we are making multiple output + // files. + if (FinalOutput) { + unsigned NumOutputs = 0; + for (ActionList::const_iterator it = C.getActions().begin(), + ie = C.getActions().end(); it != ie; ++it) + if ((*it)->getType() != types::TY_Nothing) + ++NumOutputs; + + if (NumOutputs > 1) { + Diag(clang::diag::err_drv_output_argument_with_multiple_files); + FinalOutput = 0; + } + } + + for (ActionList::const_iterator it = C.getActions().begin(), + ie = C.getActions().end(); it != ie; ++it) { + Action *A = *it; + + // If we are linking an image for multiple archs then the linker wants + // -arch_multiple and -final_output <final image name>. Unfortunately, this + // doesn't fit in cleanly because we have to pass this information down. + // + // FIXME: This is a hack; find a cleaner way to integrate this into the + // process. + const char *LinkingOutput = 0; + if (isa<LipoJobAction>(A)) { + if (FinalOutput) + LinkingOutput = FinalOutput->getValue(C.getArgs()); + else + LinkingOutput = DefaultImageName.c_str(); + } + + InputInfo II; + BuildJobsForAction(C, A, &C.getDefaultToolChain(), + /*BoundArch*/0, + /*AtTopLevel*/ true, + /*LinkingOutput*/ LinkingOutput, + II); + } + + // If the user passed -Qunused-arguments or there were errors, don't warn + // about any unused arguments. + if (Diags.hasErrorOccurred() || + C.getArgs().hasArg(options::OPT_Qunused_arguments)) + return; + + // Claim -### here. + (void) C.getArgs().hasArg(options::OPT__HASH_HASH_HASH); + + for (ArgList::const_iterator it = C.getArgs().begin(), ie = C.getArgs().end(); + it != ie; ++it) { + Arg *A = *it; + + // FIXME: It would be nice to be able to send the argument to the + // DiagnosticsEngine, so that extra values, position, and so on could be + // printed. + if (!A->isClaimed()) { + if (A->getOption().hasNoArgumentUnused()) + continue; + + // Suppress the warning automatically if this is just a flag, and it is an + // instance of an argument we already claimed. + const Option &Opt = A->getOption(); + if (isa<FlagOption>(Opt)) { + bool DuplicateClaimed = false; + + for (arg_iterator it = C.getArgs().filtered_begin(&Opt), + ie = C.getArgs().filtered_end(); it != ie; ++it) { + if ((*it)->isClaimed()) { + DuplicateClaimed = true; + break; + } + } + + if (DuplicateClaimed) + continue; + } + + Diag(clang::diag::warn_drv_unused_argument) + << A->getAsString(C.getArgs()); + } + } +} + +static const Tool &SelectToolForJob(Compilation &C, const ToolChain *TC, + const JobAction *JA, + const ActionList *&Inputs) { + const Tool *ToolForJob = 0; + + // See if we should look for a compiler with an integrated assembler. We match + // bottom up, so what we are actually looking for is an assembler job with a + // compiler input. + + if (C.getArgs().hasFlag(options::OPT_integrated_as, + options::OPT_no_integrated_as, + TC->IsIntegratedAssemblerDefault()) && + !C.getArgs().hasArg(options::OPT_save_temps) && + isa<AssembleJobAction>(JA) && + Inputs->size() == 1 && isa<CompileJobAction>(*Inputs->begin())) { + const Tool &Compiler = TC->SelectTool( + C, cast<JobAction>(**Inputs->begin()), (*Inputs)[0]->getInputs()); + if (Compiler.hasIntegratedAssembler()) { + Inputs = &(*Inputs)[0]->getInputs(); + ToolForJob = &Compiler; + } + } + + // Otherwise use the tool for the current job. + if (!ToolForJob) + ToolForJob = &TC->SelectTool(C, *JA, *Inputs); + + // See if we should use an integrated preprocessor. We do so when we have + // exactly one input, since this is the only use case we care about + // (irrelevant since we don't support combine yet). + if (Inputs->size() == 1 && isa<PreprocessJobAction>(*Inputs->begin()) && + !C.getArgs().hasArg(options::OPT_no_integrated_cpp) && + !C.getArgs().hasArg(options::OPT_traditional_cpp) && + !C.getArgs().hasArg(options::OPT_save_temps) && + ToolForJob->hasIntegratedCPP()) + Inputs = &(*Inputs)[0]->getInputs(); + + return *ToolForJob; +} + +void Driver::BuildJobsForAction(Compilation &C, + const Action *A, + const ToolChain *TC, + const char *BoundArch, + bool AtTopLevel, + const char *LinkingOutput, + InputInfo &Result) const { + llvm::PrettyStackTraceString CrashInfo("Building compilation jobs"); + + if (const InputAction *IA = dyn_cast<InputAction>(A)) { + // FIXME: It would be nice to not claim this here; maybe the old scheme of + // just using Args was better? + const Arg &Input = IA->getInputArg(); + Input.claim(); + if (Input.getOption().matches(options::OPT_INPUT)) { + const char *Name = Input.getValue(C.getArgs()); + Result = InputInfo(Name, A->getType(), Name); + } else + Result = InputInfo(&Input, A->getType(), ""); + return; + } + + if (const BindArchAction *BAA = dyn_cast<BindArchAction>(A)) { + const ToolChain *TC = &C.getDefaultToolChain(); + + if (BAA->getArchName()) + TC = &getToolChain(C.getArgs(), BAA->getArchName()); + + BuildJobsForAction(C, *BAA->begin(), TC, BAA->getArchName(), + AtTopLevel, LinkingOutput, Result); + return; + } + + const ActionList *Inputs = &A->getInputs(); + + const JobAction *JA = cast<JobAction>(A); + const Tool &T = SelectToolForJob(C, TC, JA, Inputs); + + // Only use pipes when there is exactly one input. + InputInfoList InputInfos; + for (ActionList::const_iterator it = Inputs->begin(), ie = Inputs->end(); + it != ie; ++it) { + // Treat dsymutil sub-jobs as being at the top-level too, they shouldn't get + // temporary output names. + // + // FIXME: Clean this up. + bool SubJobAtTopLevel = false; + if (AtTopLevel && isa<DsymutilJobAction>(A)) + SubJobAtTopLevel = true; + + // Also treat verify sub-jobs as being at the top-level. They don't + // produce any output and so don't need temporary output names. + if (AtTopLevel && isa<VerifyJobAction>(A)) + SubJobAtTopLevel = true; + + InputInfo II; + BuildJobsForAction(C, *it, TC, BoundArch, + SubJobAtTopLevel, LinkingOutput, II); + InputInfos.push_back(II); + } + + // Always use the first input as the base input. + const char *BaseInput = InputInfos[0].getBaseInput(); + + // ... except dsymutil actions, which use their actual input as the base + // input. + if (JA->getType() == types::TY_dSYM) + BaseInput = InputInfos[0].getFilename(); + + // Determine the place to write output to, if any. + if (JA->getType() == types::TY_Nothing) { + Result = InputInfo(A->getType(), BaseInput); + } else { + Result = InputInfo(GetNamedOutputPath(C, *JA, BaseInput, AtTopLevel), + A->getType(), BaseInput); + } + + if (CCCPrintBindings && !CCGenDiagnostics) { + llvm::errs() << "# \"" << T.getToolChain().getTripleString() << '"' + << " - \"" << T.getName() << "\", inputs: ["; + for (unsigned i = 0, e = InputInfos.size(); i != e; ++i) { + llvm::errs() << InputInfos[i].getAsString(); + if (i + 1 != e) + llvm::errs() << ", "; + } + llvm::errs() << "], output: " << Result.getAsString() << "\n"; + } else { + T.ConstructJob(C, *JA, Result, InputInfos, + C.getArgsForToolChain(TC, BoundArch), LinkingOutput); + } +} + +const char *Driver::GetNamedOutputPath(Compilation &C, + const JobAction &JA, + const char *BaseInput, + bool AtTopLevel) const { + llvm::PrettyStackTraceString CrashInfo("Computing output path"); + // Output to a user requested destination? + if (AtTopLevel && !isa<DsymutilJobAction>(JA) && + !isa<VerifyJobAction>(JA)) { + if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o)) + return C.addResultFile(FinalOutput->getValue(C.getArgs())); + } + + // Default to writing to stdout? + if (AtTopLevel && isa<PreprocessJobAction>(JA) && !CCGenDiagnostics) + return "-"; + + // Output to a temporary file? + if ((!AtTopLevel && !C.getArgs().hasArg(options::OPT_save_temps)) || + CCGenDiagnostics) { + StringRef Name = llvm::sys::path::filename(BaseInput); + std::pair<StringRef, StringRef> Split = Name.split('.'); + std::string TmpName = + GetTemporaryPath(Split.first, types::getTypeTempSuffix(JA.getType())); + return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str())); + } + + SmallString<128> BasePath(BaseInput); + StringRef BaseName; + + // Dsymutil actions should use the full path. + if (isa<DsymutilJobAction>(JA) || isa<VerifyJobAction>(JA)) + BaseName = BasePath; + else + BaseName = llvm::sys::path::filename(BasePath); + + // Determine what the derived output name should be. + const char *NamedOutput; + if (JA.getType() == types::TY_Image) { + NamedOutput = DefaultImageName.c_str(); + } else { + const char *Suffix = types::getTypeTempSuffix(JA.getType()); + assert(Suffix && "All types used for output should have a suffix."); + + std::string::size_type End = std::string::npos; + if (!types::appendSuffixForType(JA.getType())) + End = BaseName.rfind('.'); + std::string Suffixed(BaseName.substr(0, End)); + Suffixed += '.'; + Suffixed += Suffix; + NamedOutput = C.getArgs().MakeArgString(Suffixed.c_str()); + } + + // If we're saving temps and the temp filename conflicts with the input + // filename, then avoid overwriting input file. + if (!AtTopLevel && C.getArgs().hasArg(options::OPT_save_temps) && + NamedOutput == BaseName) { + StringRef Name = llvm::sys::path::filename(BaseInput); + std::pair<StringRef, StringRef> Split = Name.split('.'); + std::string TmpName = + GetTemporaryPath(Split.first, types::getTypeTempSuffix(JA.getType())); + return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str())); + } + + // As an annoying special case, PCH generation doesn't strip the pathname. + if (JA.getType() == types::TY_PCH) { + llvm::sys::path::remove_filename(BasePath); + if (BasePath.empty()) + BasePath = NamedOutput; + else + llvm::sys::path::append(BasePath, NamedOutput); + return C.addResultFile(C.getArgs().MakeArgString(BasePath.c_str())); + } else { + return C.addResultFile(NamedOutput); + } +} + +std::string Driver::GetFilePath(const char *Name, const ToolChain &TC) const { + // Respect a limited subset of the '-Bprefix' functionality in GCC by + // attempting to use this prefix when lokup up program paths. + for (Driver::prefix_list::const_iterator it = PrefixDirs.begin(), + ie = PrefixDirs.end(); it != ie; ++it) { + std::string Dir(*it); + if (Dir.empty()) + continue; + if (Dir[0] == '=') + Dir = SysRoot + Dir.substr(1); + llvm::sys::Path P(Dir); + P.appendComponent(Name); + bool Exists; + if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) + return P.str(); + } + + llvm::sys::Path P(ResourceDir); + P.appendComponent(Name); + bool Exists; + if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) + return P.str(); + + const ToolChain::path_list &List = TC.getFilePaths(); + for (ToolChain::path_list::const_iterator + it = List.begin(), ie = List.end(); it != ie; ++it) { + std::string Dir(*it); + if (Dir.empty()) + continue; + if (Dir[0] == '=') + Dir = SysRoot + Dir.substr(1); + llvm::sys::Path P(Dir); + P.appendComponent(Name); + bool Exists; + if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) + return P.str(); + } + + return Name; +} + +static bool isPathExecutable(llvm::sys::Path &P, bool WantFile) { + bool Exists; + return (WantFile ? !llvm::sys::fs::exists(P.str(), Exists) && Exists + : P.canExecute()); +} + +std::string Driver::GetProgramPath(const char *Name, const ToolChain &TC, + bool WantFile) const { + // FIXME: Needs a better variable than DefaultTargetTriple + std::string TargetSpecificExecutable(DefaultTargetTriple + "-" + Name); + // Respect a limited subset of the '-Bprefix' functionality in GCC by + // attempting to use this prefix when lokup up program paths. + for (Driver::prefix_list::const_iterator it = PrefixDirs.begin(), + ie = PrefixDirs.end(); it != ie; ++it) { + llvm::sys::Path P(*it); + P.appendComponent(TargetSpecificExecutable); + if (isPathExecutable(P, WantFile)) return P.str(); + P.eraseComponent(); + P.appendComponent(Name); + if (isPathExecutable(P, WantFile)) return P.str(); + } + + const ToolChain::path_list &List = TC.getProgramPaths(); + for (ToolChain::path_list::const_iterator + it = List.begin(), ie = List.end(); it != ie; ++it) { + llvm::sys::Path P(*it); + P.appendComponent(TargetSpecificExecutable); + if (isPathExecutable(P, WantFile)) return P.str(); + P.eraseComponent(); + P.appendComponent(Name); + if (isPathExecutable(P, WantFile)) return P.str(); + } + + // If all else failed, search the path. + llvm::sys::Path + P(llvm::sys::Program::FindProgramByName(TargetSpecificExecutable)); + if (!P.empty()) + return P.str(); + + P = llvm::sys::Path(llvm::sys::Program::FindProgramByName(Name)); + if (!P.empty()) + return P.str(); + + return Name; +} + +std::string Driver::GetTemporaryPath(StringRef Prefix, const char *Suffix) + const { + // FIXME: This is lame; sys::Path should provide this function (in particular, + // it should know how to find the temporary files dir). + std::string Error; + const char *TmpDir = ::getenv("TMPDIR"); + if (!TmpDir) + TmpDir = ::getenv("TEMP"); + if (!TmpDir) + TmpDir = ::getenv("TMP"); + if (!TmpDir) + TmpDir = "/tmp"; + llvm::sys::Path P(TmpDir); + P.appendComponent(Prefix); + if (P.makeUnique(false, &Error)) { + Diag(clang::diag::err_drv_unable_to_make_temp) << Error; + return ""; + } + + // FIXME: Grumble, makeUnique sometimes leaves the file around!? PR3837. + P.eraseFromDisk(false, 0); + + P.appendSuffix(Suffix); + return P.str(); +} + +/// \brief Compute target triple from args. +/// +/// This routine provides the logic to compute a target triple from various +/// args passed to the driver and the default triple string. +static llvm::Triple computeTargetTriple(StringRef DefaultTargetTriple, + const ArgList &Args, + StringRef DarwinArchName) { + // FIXME: Already done in Compilation *Driver::BuildCompilation + if (const Arg *A = Args.getLastArg(options::OPT_target)) + DefaultTargetTriple = A->getValue(Args); + + llvm::Triple Target(llvm::Triple::normalize(DefaultTargetTriple)); + + // Handle Darwin-specific options available here. + if (Target.isOSDarwin()) { + // If an explict Darwin arch name is given, that trumps all. + if (!DarwinArchName.empty()) { + Target.setArch( + llvm::Triple::getArchTypeForDarwinArchName(DarwinArchName)); + return Target; + } + + // Handle the Darwin '-arch' flag. + if (Arg *A = Args.getLastArg(options::OPT_arch)) { + llvm::Triple::ArchType DarwinArch + = llvm::Triple::getArchTypeForDarwinArchName(A->getValue(Args)); + if (DarwinArch != llvm::Triple::UnknownArch) + Target.setArch(DarwinArch); + } + } + + // Skip further flag support on OSes which don't support '-m32' or '-m64'. + if (Target.getArchName() == "tce" || + Target.getOS() == llvm::Triple::AuroraUX || + Target.getOS() == llvm::Triple::Minix) + return Target; + + // Handle pseudo-target flags '-m32' and '-m64'. + // FIXME: Should this information be in llvm::Triple? + if (Arg *A = Args.getLastArg(options::OPT_m32, options::OPT_m64)) { + if (A->getOption().matches(options::OPT_m32)) { + if (Target.getArch() == llvm::Triple::x86_64) + Target.setArch(llvm::Triple::x86); + if (Target.getArch() == llvm::Triple::ppc64) + Target.setArch(llvm::Triple::ppc); + } else { + if (Target.getArch() == llvm::Triple::x86) + Target.setArch(llvm::Triple::x86_64); + if (Target.getArch() == llvm::Triple::ppc) + Target.setArch(llvm::Triple::ppc64); + } + } + + return Target; +} + +const ToolChain &Driver::getToolChain(const ArgList &Args, + StringRef DarwinArchName) const { + llvm::Triple Target = computeTargetTriple(DefaultTargetTriple, Args, + DarwinArchName); + + ToolChain *&TC = ToolChains[Target.str()]; + if (!TC) { + switch (Target.getOS()) { + case llvm::Triple::AuroraUX: + TC = new toolchains::AuroraUX(*this, Target, Args); + break; + case llvm::Triple::Darwin: + case llvm::Triple::MacOSX: + case llvm::Triple::IOS: + if (Target.getArch() == llvm::Triple::x86 || + Target.getArch() == llvm::Triple::x86_64 || + Target.getArch() == llvm::Triple::arm || + Target.getArch() == llvm::Triple::thumb) + TC = new toolchains::DarwinClang(*this, Target); + else + TC = new toolchains::Darwin_Generic_GCC(*this, Target, Args); + break; + case llvm::Triple::DragonFly: + TC = new toolchains::DragonFly(*this, Target, Args); + break; + case llvm::Triple::OpenBSD: + TC = new toolchains::OpenBSD(*this, Target, Args); + break; + case llvm::Triple::NetBSD: + TC = new toolchains::NetBSD(*this, Target, Args); + break; + case llvm::Triple::FreeBSD: + TC = new toolchains::FreeBSD(*this, Target, Args); + break; + case llvm::Triple::Minix: + TC = new toolchains::Minix(*this, Target, Args); + break; + case llvm::Triple::Linux: + if (Target.getArch() == llvm::Triple::hexagon) + TC = new toolchains::Hexagon_TC(*this, Target); + else + TC = new toolchains::Linux(*this, Target, Args); + break; + case llvm::Triple::Solaris: + TC = new toolchains::Solaris(*this, Target, Args); + break; + case llvm::Triple::Win32: + TC = new toolchains::Windows(*this, Target); + break; + case llvm::Triple::MinGW32: + // FIXME: We need a MinGW toolchain. Fallthrough for now. + default: + // TCE is an OSless target + if (Target.getArchName() == "tce") { + TC = new toolchains::TCEToolChain(*this, Target); + break; + } + + TC = new toolchains::Generic_GCC(*this, Target, Args); + break; + } + } + return *TC; +} + +bool Driver::ShouldUseClangCompiler(const Compilation &C, const JobAction &JA, + const llvm::Triple &Triple) const { + // Check if user requested no clang, or clang doesn't understand this type (we + // only handle single inputs for now). + if (!CCCUseClang || JA.size() != 1 || + !types::isAcceptedByClang((*JA.begin())->getType())) + return false; + + // Otherwise make sure this is an action clang understands. + if (isa<PreprocessJobAction>(JA)) { + if (!CCCUseClangCPP) { + Diag(clang::diag::warn_drv_not_using_clang_cpp); + return false; + } + } else if (!isa<PrecompileJobAction>(JA) && !isa<CompileJobAction>(JA)) + return false; + + // Use clang for C++? + if (!CCCUseClangCXX && types::isCXX((*JA.begin())->getType())) { + Diag(clang::diag::warn_drv_not_using_clang_cxx); + return false; + } + + // Always use clang for precompiling, AST generation, and rewriting, + // regardless of archs. + if (isa<PrecompileJobAction>(JA) || + types::isOnlyAcceptedByClang(JA.getType())) + return true; + + // Finally, don't use clang if this isn't one of the user specified archs to + // build. + if (!CCCClangArchs.empty() && !CCCClangArchs.count(Triple.getArch())) { + Diag(clang::diag::warn_drv_not_using_clang_arch) << Triple.getArchName(); + return false; + } + + return true; +} + +/// GetReleaseVersion - Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and return the +/// grouped values as integers. Numbers which are not provided are set to 0. +/// +/// \return True if the entire string was parsed (9.2), or all groups were +/// parsed (10.3.5extrastuff). +bool Driver::GetReleaseVersion(const char *Str, unsigned &Major, + unsigned &Minor, unsigned &Micro, + bool &HadExtra) { + HadExtra = false; + + Major = Minor = Micro = 0; + if (*Str == '\0') + return true; + + char *End; + Major = (unsigned) strtol(Str, &End, 10); + if (*Str != '\0' && *End == '\0') + return true; + if (*End != '.') + return false; + + Str = End+1; + Minor = (unsigned) strtol(Str, &End, 10); + if (*Str != '\0' && *End == '\0') + return true; + if (*End != '.') + return false; + + Str = End+1; + Micro = (unsigned) strtol(Str, &End, 10); + if (*Str != '\0' && *End == '\0') + return true; + if (Str == End) + return false; + HadExtra = true; + return true; +} |