Check in LLVM r95781.
diff --git a/lib/Driver/Driver.cpp b/lib/Driver/Driver.cpp
new file mode 100644
index 0000000..a2fc5aa
--- /dev/null
+++ b/lib/Driver/Driver.cpp
@@ -0,0 +1,1226 @@
+//===--- 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/HostInfo.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/Driver/Types.h"
+
+#include "clang/Basic/Version.h"
+
+#include "llvm/ADT/StringSet.h"
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/System/Path.h"
+#include "llvm/System/Program.h"
+
+#include "InputInfo.h"
+
+#include <map>
+
+using namespace clang::driver;
+using namespace clang;
+
+// Used to set values for "production" clang, for releases.
+// #define USE_PRODUCTION_CLANG
+
+Driver::Driver(llvm::StringRef _Name, llvm::StringRef _Dir,
+ llvm::StringRef _DefaultHostTriple,
+ llvm::StringRef _DefaultImageName,
+ bool IsProduction, Diagnostic &_Diags)
+ : Opts(createDriverOptTable()), Diags(_Diags),
+ Name(_Name), Dir(_Dir), DefaultHostTriple(_DefaultHostTriple),
+ DefaultImageName(_DefaultImageName),
+ Host(0),
+ CCCGenericGCCName("gcc"), CCCIsCXX(false), CCCEcho(false),
+ CCCPrintBindings(false), 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, and don't use clang C++.
+ //
+ // 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);
+
+ CCCUseClangCXX = false;
+ }
+
+ // Compute the path to the resource directory.
+ llvm::sys::Path P(Dir);
+ P.eraseComponent(); // Remove /bin from foo/bin
+ P.appendComponent("lib");
+ P.appendComponent("clang");
+ P.appendComponent(CLANG_VERSION_STRING);
+ ResourceDir = P.str();
+}
+
+Driver::~Driver() {
+ delete Opts;
+ delete Host;
+}
+
+InputArgList *Driver::ParseArgStrings(const char **ArgBegin,
+ const char **ArgEnd) {
+ llvm::PrettyStackTraceString CrashInfo("Command line argument parsing");
+ unsigned MissingArgIndex, MissingArgCount;
+ InputArgList *Args = getOpts().ParseArgs(ArgBegin, ArgEnd,
+ 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;
+ }
+ }
+
+ return Args;
+}
+
+Compilation *Driver::BuildCompilation(int argc, const char **argv) {
+ llvm::PrettyStackTraceString CrashInfo("Compilation construction");
+
+ // FIXME: Handle environment options which effect driver behavior, somewhere
+ // (client?). GCC_EXEC_PREFIX, COMPILER_PATH, LIBRARY_PATH, LPATH,
+ // CC_PRINT_OPTIONS.
+
+ // 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;
+
+ const char **Start = argv + 1, **End = argv + argc;
+ const char *HostTriple = DefaultHostTriple.c_str();
+
+ InputArgList *Args = ParseArgStrings(Start, End);
+
+ // -no-canonical-prefixes is used very early in main.
+ Args->ClaimAllArgs(options::OPT_no_canonical_prefixes);
+
+ // 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)) {
+ llvm::StringRef Cur = A->getValue(*Args);
+
+ CCCClangArchs.clear();
+ while (!Cur.empty()) {
+ std::pair<llvm::StringRef, llvm::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) << Arch;
+ continue;
+ }
+
+ CCCClangArchs.insert(Arch);
+ }
+
+ Cur = Split.second;
+ }
+ }
+ if (const Arg *A = Args->getLastArg(options::OPT_ccc_host_triple))
+ HostTriple = A->getValue(*Args);
+ if (const Arg *A = Args->getLastArg(options::OPT_ccc_install_dir))
+ Dir = A->getValue(*Args);
+
+ Host = GetHostInfo(HostTriple);
+
+ // The compilation takes ownership of Args.
+ Compilation *C = new Compilation(*this, *Host->CreateToolChain(*Args), Args);
+
+ // FIXME: This behavior shouldn't be here.
+ if (CCCPrintOptions) {
+ PrintOptions(C->getArgs());
+ return C;
+ }
+
+ if (!HandleImmediateArgs(*C))
+ return C;
+
+ // Construct the list of abstract actions to perform for this compilation. We
+ // avoid passing a Compilation here simply to enforce the abstraction that
+ // pipelining is not host or toolchain dependent (other than the driver driver
+ // test).
+ if (Host->useDriverDriver())
+ BuildUniversalActions(C->getArgs(), C->getActions());
+ else
+ BuildActions(C->getArgs(), C->getActions());
+
+ if (CCCPrintActions) {
+ PrintActions(*C);
+ return C;
+ }
+
+ BuildJobs(*C);
+
+ return C;
+}
+
+int Driver::ExecuteCompilation(const Compilation &C) 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 (getDiags().getNumErrors())
+ return 1;
+
+ const Command *FailingCommand = 0;
+ int Res = C.ExecuteJob(C.getJobs(), FailingCommand);
+
+ // Remove temp files.
+ C.CleanupFileList(C.getTempFiles());
+
+ // If the compilation failed, remove result files as well.
+ if (Res != 0 && !C.getArgs().hasArg(options::OPT_save_temps))
+ C.CleanupFileList(C.getResultFiles(), true);
+
+ // Print extra information about abnormal failures, if possible.
+ if (Res) {
+ // 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 Action &Source = FailingCommand->getSource();
+ bool IsFriendlyTool = (isa<PreprocessJobAction>(Source) ||
+ isa<PrecompileJobAction>(Source) ||
+ isa<AnalyzeJobAction>(Source) ||
+ isa<CompileJobAction>(Source));
+
+ if (!IsFriendlyTool || Res != 1) {
+ // FIXME: See FIXME above regarding result code interpretation.
+ if (Res < 0)
+ Diag(clang::diag::err_drv_command_signalled)
+ << Source.getClassName() << -Res;
+ else
+ Diag(clang::diag::err_drv_command_failed)
+ << Source.getClassName() << 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";
+ }
+}
+
+// FIXME: Move -ccc options to real options in the .td file (or eliminate), and
+// then move to using OptTable::PrintHelp.
+void Driver::PrintHelp(bool ShowHidden) const {
+ getOpts().PrintHelp(llvm::outs(), Name.c_str(),
+ "clang \"gcc-compatible\" driver", ShowHidden);
+}
+
+void Driver::PrintVersion(const Compilation &C, llvm::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';
+}
+
+bool Driver::HandleImmediateArgs(const Compilation &C) {
+ // The order these options are handled in 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_dumpversion)) {
+ llvm::outs() << CLANG_VERSION_STRING "\n";
+ 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: =";
+ for (ToolChain::path_list::const_iterator it = TC.getFilePaths().begin(),
+ ie = TC.getFilePaths().end(); it != ie; ++it) {
+ if (it != TC.getFilePaths().begin())
+ llvm::outs() << ':';
+ llvm::outs() << *it;
+ }
+ 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);
+}
+
+void Driver::BuildUniversalActions(const ArgList &Args,
+ 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;
+ llvm::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(Args, SingleActions);
+
+ // Add in arch binding and lipo (if necessary) for every top level action.
+ 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]));
+
+ // 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()));
+ }
+}
+
+void Driver::BuildActions(const ArgList &Args, ActionList &Actions) const {
+ llvm::PrettyStackTraceString CrashInfo("Building compilation actions");
+ // Start by constructing the list of inputs and their types.
+
+ // 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;
+
+ llvm::SmallVector<std::pair<types::ID, const Arg*>, 16> Inputs;
+ 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))
+ Diag(clang::diag::err_drv_unknown_stdin_type);
+ Ty = types::TY_C;
+ } else {
+ // Otherwise lookup by extension, and fallback to ObjectType if not
+ // found. 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 = Host->lookupTypeForExtension(Ext + 1);
+
+ if (Ty == types::TY_INVALID)
+ Ty = types::TY_Object;
+ }
+
+ // -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 &&
+ !llvm::sys::Path(Value).exists())
+ Diag(clang::diag::err_drv_no_such_file) << A->getValue(Args);
+ 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));
+
+ // 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 comatible.
+ if (!InputType) {
+ Diag(clang::diag::err_drv_unknown_language) << A->getValue(Args);
+ InputType = types::TY_Object;
+ }
+ }
+ }
+
+ if (!SuppressMissingInputWarning && Inputs.empty()) {
+ Diag(clang::diag::err_drv_no_input_files);
+ return;
+ }
+
+ // 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.
+ Arg *FinalPhaseArg = 0;
+ phases::ID FinalPhase;
+
+ // -{E,M,MM} only run the preprocessor.
+ if ((FinalPhaseArg = Args.getLastArg(options::OPT_E)) ||
+ (FinalPhaseArg = Args.getLastArg(options::OPT_M)) ||
+ (FinalPhaseArg = Args.getLastArg(options::OPT_MM))) {
+ FinalPhase = phases::Preprocess;
+
+ // -{fsyntax-only,-analyze,emit-ast,S} only run up to the compiler.
+ } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_fsyntax_only)) ||
+ (FinalPhaseArg = Args.getLastArg(options::OPT__analyze,
+ options::OPT__analyze_auto)) ||
+ (FinalPhaseArg = Args.getLastArg(options::OPT_emit_ast)) ||
+ (FinalPhaseArg = Args.getLastArg(options::OPT_S))) {
+ FinalPhase = phases::Compile;
+
+ // -c only runs up to the assembler.
+ } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_c))) {
+ FinalPhase = phases::Assemble;
+
+ // Otherwise do everything.
+ } else
+ FinalPhase = phases::Link;
+
+ // 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;
+ for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
+ types::ID InputType = Inputs[i].first;
+ const Arg *InputArg = Inputs[i].second;
+
+ unsigned 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();
+
+ // 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.
+ llvm::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)
+ 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: assert(0 && "link action invalid here.");
+ case phases::Preprocess: {
+ types::ID OutputTy;
+ // -{M, MM} alter the output type.
+ if (Args.hasArg(options::OPT_M) || Args.hasArg(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: {
+ bool HasO4 = false;
+ if (const Arg *A = Args.getLastArg(options::OPT_O_Group))
+ HasO4 = A->getOption().matches(options::OPT_O4);
+
+ if (Args.hasArg(options::OPT_fsyntax_only)) {
+ return new CompileJobAction(Input, types::TY_Nothing);
+ } else if (Args.hasArg(options::OPT__analyze, options::OPT__analyze_auto)) {
+ return new AnalyzeJobAction(Input, types::TY_Plist);
+ } else if (Args.hasArg(options::OPT_emit_ast)) {
+ return new CompileJobAction(Input, types::TY_AST);
+ } else if (Args.hasArg(options::OPT_emit_llvm) ||
+ Args.hasArg(options::OPT_flto) || HasO4) {
+ types::ID Output =
+ Args.hasArg(options::OPT_S) ? types::TY_LLVMAsm : types::TY_LLVMBC;
+ return new CompileJobAction(Input, Output);
+ } else {
+ return new CompileJobAction(Input, types::TY_PP_Asm);
+ }
+ }
+ case phases::Assemble:
+ return new AssembleJobAction(Input, types::TY_Object);
+ }
+
+ assert(0 && "invalid phase in ConstructPhaseAction");
+ return 0;
+}
+
+void Driver::BuildJobs(Compilation &C) const {
+ llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
+ bool SaveTemps = C.getArgs().hasArg(options::OPT_save_temps);
+ bool UsePipes = C.getArgs().hasArg(options::OPT_pipe);
+
+ // FIXME: Pipes are forcibly disabled until we support executing them.
+ if (!CCCPrintBindings)
+ UsePipes = false;
+
+ // -save-temps inhibits pipes.
+ if (SaveTemps && UsePipes)
+ Diag(clang::diag::warn_drv_pipe_ignored_with_save_temps);
+
+ 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,
+ /*CanAcceptPipe*/ true,
+ /*AtTopLevel*/ true,
+ /*LinkingOutput*/ LinkingOutput,
+ II);
+ }
+
+ // If the user passed -Qunused-arguments or there were errors, don't warn
+ // about any unused arguments.
+ if (Diags.getNumErrors() ||
+ 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
+ // Diagnostic, 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().hasArg(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()));
+ if (Compiler.hasIntegratedAssembler()) {
+ Inputs = &(*Inputs)[0]->getInputs();
+ ToolForJob = &Compiler;
+ }
+ }
+
+ // Otherwise use the tool for the current job.
+ if (!ToolForJob)
+ ToolForJob = &TC->SelectTool(C, *JA);
+
+ // 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 CanAcceptPipe,
+ bool AtTopLevel,
+ const char *LinkingOutput,
+ InputInfo &Result) const {
+ llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
+
+ bool UsePipes = C.getArgs().hasArg(options::OPT_pipe);
+ // FIXME: Pipes are forcibly disabled until we support executing them.
+ if (!CCCPrintBindings)
+ UsePipes = false;
+
+ 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 (isa<PositionalArg>(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();
+
+ std::string Arch;
+ if (BAA->getArchName())
+ TC = Host->CreateToolChain(C.getArgs(), BAA->getArchName());
+
+ BuildJobsForAction(C, *BAA->begin(), TC, BAA->getArchName(),
+ CanAcceptPipe, 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.
+ bool TryToUsePipeInput = Inputs->size() == 1 && T.acceptsPipedInput();
+ InputInfoList InputInfos;
+ for (ActionList::const_iterator it = Inputs->begin(), ie = Inputs->end();
+ it != ie; ++it) {
+ InputInfo II;
+ BuildJobsForAction(C, *it, TC, BoundArch, TryToUsePipeInput,
+ /*AtTopLevel*/false, LinkingOutput, II);
+ InputInfos.push_back(II);
+ }
+
+ // Determine if we should output to a pipe.
+ bool OutputToPipe = false;
+ if (CanAcceptPipe && T.canPipeOutput()) {
+ // Some actions default to writing to a pipe if they are the top level phase
+ // and there was no user override.
+ //
+ // FIXME: Is there a better way to handle this?
+ if (AtTopLevel) {
+ if (isa<PreprocessJobAction>(A) && !C.getArgs().hasArg(options::OPT_o))
+ OutputToPipe = true;
+ } else if (UsePipes)
+ OutputToPipe = true;
+ }
+
+ // Figure out where to put the job (pipes).
+ Job *Dest = &C.getJobs();
+ if (InputInfos[0].isPipe()) {
+ assert(TryToUsePipeInput && "Unrequested pipe!");
+ assert(InputInfos.size() == 1 && "Unexpected pipe with multiple inputs.");
+ Dest = &InputInfos[0].getPipe();
+ }
+
+ // Always use the first input as the base input.
+ const char *BaseInput = InputInfos[0].getBaseInput();
+
+ // Determine the place to write output to (nothing, pipe, or filename) and
+ // where to put the new job.
+ if (JA->getType() == types::TY_Nothing) {
+ Result = InputInfo(A->getType(), BaseInput);
+ } else if (OutputToPipe) {
+ // Append to current piped job or create a new one as appropriate.
+ PipedJob *PJ = dyn_cast<PipedJob>(Dest);
+ if (!PJ) {
+ PJ = new PipedJob();
+ // FIXME: Temporary hack so that -ccc-print-bindings work until we have
+ // pipe support. Please remove later.
+ if (!CCCPrintBindings)
+ cast<JobList>(Dest)->addJob(PJ);
+ Dest = PJ;
+ }
+ Result = InputInfo(PJ, A->getType(), BaseInput);
+ } else {
+ Result = InputInfo(GetNamedOutputPath(C, *JA, BaseInput, AtTopLevel),
+ A->getType(), BaseInput);
+ }
+
+ if (CCCPrintBindings) {
+ 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, *Dest, 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) {
+ if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
+ return C.addResultFile(FinalOutput->getValue(C.getArgs()));
+ }
+
+ // Output to a temporary file?
+ if (!AtTopLevel && !C.getArgs().hasArg(options::OPT_save_temps)) {
+ std::string TmpName =
+ GetTemporaryPath(types::getTypeTempSuffix(JA.getType()));
+ return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str()));
+ }
+
+ llvm::sys::Path BasePath(BaseInput);
+ std::string BaseName(BasePath.getLast());
+
+ // 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());
+ }
+
+ // As an annoying special case, PCH generation doesn't strip the pathname.
+ if (JA.getType() == types::TY_PCH) {
+ BasePath.eraseComponent();
+ if (BasePath.isEmpty())
+ BasePath = NamedOutput;
+ else
+ BasePath.appendComponent(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 {
+ const ToolChain::path_list &List = TC.getFilePaths();
+ for (ToolChain::path_list::const_iterator
+ it = List.begin(), ie = List.end(); it != ie; ++it) {
+ llvm::sys::Path P(*it);
+ P.appendComponent(Name);
+ if (P.exists())
+ return P.str();
+ }
+
+ return Name;
+}
+
+std::string Driver::GetProgramPath(const char *Name, const ToolChain &TC,
+ bool WantFile) const {
+ 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(Name);
+ if (WantFile ? P.exists() : P.canExecute())
+ return P.str();
+ }
+
+ // If all else failed, search the path.
+ llvm::sys::Path P(llvm::sys::Program::FindProgramByName(Name));
+ if (!P.empty())
+ return P.str();
+
+ return Name;
+}
+
+std::string Driver::GetTemporaryPath(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("cc");
+ 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();
+}
+
+const HostInfo *Driver::GetHostInfo(const char *TripleStr) const {
+ llvm::PrettyStackTraceString CrashInfo("Constructing host");
+ llvm::Triple Triple(TripleStr);
+
+ switch (Triple.getOS()) {
+ case llvm::Triple::AuroraUX:
+ return createAuroraUXHostInfo(*this, Triple);
+ case llvm::Triple::Darwin:
+ return createDarwinHostInfo(*this, Triple);
+ case llvm::Triple::DragonFly:
+ return createDragonFlyHostInfo(*this, Triple);
+ case llvm::Triple::OpenBSD:
+ return createOpenBSDHostInfo(*this, Triple);
+ case llvm::Triple::FreeBSD:
+ return createFreeBSDHostInfo(*this, Triple);
+ case llvm::Triple::Linux:
+ return createLinuxHostInfo(*this, Triple);
+ default:
+ return createUnknownHostInfo(*this, Triple);
+ }
+}
+
+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 and AST generation, regardless of archs.
+ if (isa<PrecompileJobAction>(JA) || JA.getType() == types::TY_AST)
+ 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;
+}