forked from OSchip/llvm-project
Implement clang -cc1.
- I apologize for the link time horrors, my goal is to kill off clang-cc in fairly short order. llvm-svn: 91170
This commit is contained in:
Daniel Dunbar
parent
76d0994ffd
commit
f72bdf7eed
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@ -2,18 +2,31 @@ set(LLVM_NO_RTTI 1)
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set( LLVM_USED_LIBS
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clangDriver
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clangFrontend
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clangCodeGen
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clangAnalysis
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clangRewrite
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clangSema
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clangAST
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clangParse
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clangLex
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clangBasic
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)
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set(LLVM_LINK_COMPONENTS system support bitreader bitwriter)
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set( LLVM_LINK_COMPONENTS
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${LLVM_TARGETS_TO_BUILD}
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bitreader
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bitwriter
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codegen
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ipo
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selectiondag
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)
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add_clang_executable(clang
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driver.cpp
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cc1_main.cpp
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)
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add_dependencies(clang clang-cc)
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if(UNIX)
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set(CLANGXX_LINK_OR_COPY create_symlink)
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else()
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@ -1,10 +1,10 @@
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##===- tools/driver/Makefile -------------------------------*- Makefile -*-===##
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#
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#
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# The LLVM Compiler Infrastructure
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#
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# This file is distributed under the University of Illinois Open Source
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# License. See LICENSE.TXT for details.
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#
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#
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##===----------------------------------------------------------------------===##
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LEVEL = ../../../..
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@ -13,15 +13,20 @@ TOOLALIAS = clang++
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CPPFLAGS += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include
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CXXFLAGS = -fno-rtti
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# This tool has no plugins, optimize startup time.
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# Clang tool has no plugins, optimize startup time.
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TOOL_NO_EXPORTS = 1
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# FIXME: It is unfortunate we need to pull in the bitcode reader and
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# writer just to get the serializer stuff used by clangBasic.
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LINK_COMPONENTS := system support bitreader bitwriter
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USEDLIBS = clangDriver.a clangBasic.a
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# Include this here so we can get the configuration of the targets that have
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# been configured for construction. We have to do this early so we can set up
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# LINK_COMPONENTS before including Makefile.rules
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include $(LEVEL)/Makefile.config
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include $(LEVEL)/Makefile.common
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LINK_COMPONENTS := $(TARGETS_TO_BUILD) bitreader bitwriter codegen ipo selectiondag
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USEDLIBS = clangFrontend.a clangDriver.a clangCodeGen.a clangAnalysis.a \
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clangRewrite.a clangSema.a clangAST.a clangParse.a \
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clangLex.a clangBasic.a
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include $(LLVM_SRC_ROOT)/Makefile.rules
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# Translate make variable to define when building a "production" clang.
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ifdef CLANG_IS_PRODUCTION
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@ -7,18 +7,328 @@
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//
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//===----------------------------------------------------------------------===//
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//
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// This is the entry point to the clang -cc1 functionality.
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// This is the entry point to the clang -cc1 functionality, which implements the
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// core compiler functionality along with a number of additional tools for
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// demonstration and testing purposes.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Basic/Diagnostic.h"
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#include "clang/Basic/FileManager.h"
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#include "clang/Basic/SourceManager.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Basic/Version.h"
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#include "clang/Driver/Arg.h"
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#include "clang/Driver/ArgList.h"
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#include "clang/Driver/CC1Options.h"
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#include "clang/Driver/DriverDiagnostic.h"
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#include "clang/Driver/OptTable.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Frontend/CompilerInvocation.h"
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#include "clang/Frontend/FrontendActions.h"
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#include "clang/Frontend/FrontendDiagnostic.h"
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#include "clang/Frontend/FrontendPluginRegistry.h"
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#include "clang/Frontend/TextDiagnosticBuffer.h"
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#include "clang/Frontend/TextDiagnosticPrinter.h"
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#include "clang/Frontend/VerifyDiagnosticsClient.h"
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#include "llvm/LLVMContext.h"
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#include "llvm/ADT/OwningPtr.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/PrettyStackTrace.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/System/DynamicLibrary.h"
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#include "llvm/System/Host.h"
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#include "llvm/System/Path.h"
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#include "llvm/System/Signals.h"
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#include "llvm/Target/TargetSelect.h"
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#include <cstdio>
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using namespace clang;
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//===----------------------------------------------------------------------===//
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// Main driver
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//===----------------------------------------------------------------------===//
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void LLVMErrorHandler(void *UserData, const std::string &Message) {
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Diagnostic &Diags = *static_cast<Diagnostic*>(UserData);
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Diags.Report(diag::err_fe_error_backend) << Message;
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// We cannot recover from llvm errors.
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exit(1);
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}
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static FrontendAction *CreateFrontendAction(CompilerInstance &CI) {
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using namespace clang::frontend;
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switch (CI.getFrontendOpts().ProgramAction) {
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default:
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llvm::llvm_unreachable("Invalid program action!");
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case ASTDump: return new ASTDumpAction();
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case ASTPrint: return new ASTPrintAction();
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case ASTPrintXML: return new ASTPrintXMLAction();
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case ASTView: return new ASTViewAction();
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case DumpRawTokens: return new DumpRawTokensAction();
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case DumpRecordLayouts: return new DumpRecordAction();
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case DumpTokens: return new DumpTokensAction();
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case EmitAssembly: return new EmitAssemblyAction();
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case EmitBC: return new EmitBCAction();
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case EmitHTML: return new HTMLPrintAction();
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case EmitLLVM: return new EmitLLVMAction();
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case EmitLLVMOnly: return new EmitLLVMOnlyAction();
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case FixIt: return new FixItAction();
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case GeneratePCH: return new GeneratePCHAction();
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case GeneratePTH: return new GeneratePTHAction();
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case InheritanceView: return new InheritanceViewAction();
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case ParseNoop: return new ParseOnlyAction();
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case ParsePrintCallbacks: return new PrintParseAction();
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case ParseSyntaxOnly: return new SyntaxOnlyAction();
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case PluginAction: {
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if (CI.getFrontendOpts().ActionName == "help") {
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llvm::errs() << "clang -cc1 plugins:\n";
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for (FrontendPluginRegistry::iterator it =
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FrontendPluginRegistry::begin(),
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ie = FrontendPluginRegistry::end();
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it != ie; ++it)
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llvm::errs() << " " << it->getName() << " - " << it->getDesc() << "\n";
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return 0;
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}
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for (FrontendPluginRegistry::iterator it =
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FrontendPluginRegistry::begin(), ie = FrontendPluginRegistry::end();
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it != ie; ++it) {
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if (it->getName() == CI.getFrontendOpts().ActionName)
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return it->instantiate();
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}
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CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name)
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<< CI.getFrontendOpts().ActionName;
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return 0;
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}
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case PrintDeclContext: return new DeclContextPrintAction();
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case PrintPreprocessedInput: return new PrintPreprocessedAction();
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case RewriteBlocks: return new RewriteBlocksAction();
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case RewriteMacros: return new RewriteMacrosAction();
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case RewriteObjC: return new RewriteObjCAction();
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case RewriteTest: return new RewriteTestAction();
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case RunAnalysis: return new AnalysisAction();
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case RunPreprocessorOnly: return new PreprocessOnlyAction();
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}
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}
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// FIXME: Define the need for this testing away.
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static int cc1_test(Diagnostic &Diags,
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const char **ArgBegin, const char **ArgEnd,
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const char *Argv0, void *MainAddr) {
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using namespace clang::driver;
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int cc1_main(const char **ArgBegin, const char **ArgEnd,
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const char *Argv0, void *MainAddr) {
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llvm::errs() << "cc1 argv:";
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for (const char **i = ArgBegin; i != ArgEnd; ++i)
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llvm::errs() << " \"" << *i << '"';
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llvm::errs() << "\n";
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// Parse the arguments.
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OptTable *Opts = createCC1OptTable();
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unsigned MissingArgIndex, MissingArgCount;
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InputArgList *Args = Opts->ParseArgs(ArgBegin, ArgEnd,
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MissingArgIndex, MissingArgCount);
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// Check for missing argument error.
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if (MissingArgCount)
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Diags.Report(clang::diag::err_drv_missing_argument)
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<< Args->getArgString(MissingArgIndex) << MissingArgCount;
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// Dump the parsed arguments.
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llvm::errs() << "cc1 parsed options:\n";
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for (ArgList::const_iterator it = Args->begin(), ie = Args->end();
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it != ie; ++it)
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(*it)->dump();
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// Create a compiler invocation.
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llvm::errs() << "cc1 creating invocation.\n";
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CompilerInvocation Invocation;
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CompilerInvocation::CreateFromArgs(Invocation, ArgBegin, ArgEnd,
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Argv0, MainAddr, Diags);
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// Convert the invocation back to argument strings.
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std::vector<std::string> InvocationArgs;
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Invocation.toArgs(InvocationArgs);
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// Dump the converted arguments.
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llvm::SmallVector<const char*, 32> Invocation2Args;
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llvm::errs() << "invocation argv :";
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for (unsigned i = 0, e = InvocationArgs.size(); i != e; ++i) {
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Invocation2Args.push_back(InvocationArgs[i].c_str());
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llvm::errs() << " \"" << InvocationArgs[i] << '"';
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}
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llvm::errs() << "\n";
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// Convert those arguments to another invocation, and check that we got the
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// same thing.
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CompilerInvocation Invocation2;
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CompilerInvocation::CreateFromArgs(Invocation2, Invocation2Args.begin(),
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Invocation2Args.end(), Argv0, MainAddr,
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Diags);
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// FIXME: Implement CompilerInvocation comparison.
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if (true) {
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//llvm::errs() << "warning: Invocations differ!\n";
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std::vector<std::string> Invocation2Args;
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Invocation2.toArgs(Invocation2Args);
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llvm::errs() << "invocation2 argv:";
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for (unsigned i = 0, e = Invocation2Args.size(); i != e; ++i)
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llvm::errs() << " \"" << Invocation2Args[i] << '"';
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llvm::errs() << "\n";
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}
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return 0;
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}
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int cc1_main(const char **ArgBegin, const char **ArgEnd,
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const char *Argv0, void *MainAddr) {
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llvm::sys::PrintStackTraceOnErrorSignal();
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llvm::PrettyStackTraceProgram X(ArgBegin - ArgEnd, ArgBegin);
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CompilerInstance Clang(&llvm::getGlobalContext(), false);
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// Run clang -cc1 test.
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if (ArgBegin != ArgEnd && llvm::StringRef(ArgBegin[0]) == "-cc1test") {
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TextDiagnosticPrinter DiagClient(llvm::errs(), DiagnosticOptions());
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Diagnostic Diags(&DiagClient);
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return cc1_test(Diags, ArgBegin + 1, ArgEnd, Argv0, MainAddr);
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}
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// Initialize targets first, so that --version shows registered targets.
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llvm::InitializeAllTargets();
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llvm::InitializeAllAsmPrinters();
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// Buffer diagnostics from argument parsing so that we can output them using a
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// well formed diagnostic object.
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TextDiagnosticBuffer DiagsBuffer;
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Diagnostic Diags(&DiagsBuffer);
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CompilerInvocation::CreateFromArgs(Clang.getInvocation(), ArgBegin, ArgEnd,
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Argv0, MainAddr, Diags);
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// Honor -help.
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if (Clang.getInvocation().getFrontendOpts().ShowHelp) {
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llvm::OwningPtr<driver::OptTable> Opts(driver::createCC1OptTable());
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Opts->PrintHelp(llvm::outs(), "clang -cc1",
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"LLVM 'Clang' Compiler: http://clang.llvm.org");
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return 0;
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}
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// Honor -version.
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//
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// FIXME: Use a better -version message?
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if (Clang.getInvocation().getFrontendOpts().ShowVersion) {
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llvm::cl::PrintVersionMessage();
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return 0;
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}
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// Create the actual diagnostics engine.
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Clang.createDiagnostics(ArgEnd - ArgBegin, const_cast<char**>(ArgBegin));
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if (!Clang.hasDiagnostics())
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return 1;
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// Set an error handler, so that any LLVM backend diagnostics go through our
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// error handler.
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llvm::llvm_install_error_handler(LLVMErrorHandler,
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static_cast<void*>(&Clang.getDiagnostics()));
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DiagsBuffer.FlushDiagnostics(Clang.getDiagnostics());
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// Load any requested plugins.
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for (unsigned i = 0,
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e = Clang.getFrontendOpts().Plugins.size(); i != e; ++i) {
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const std::string &Path = Clang.getFrontendOpts().Plugins[i];
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std::string Error;
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if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error))
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Diags.Report(diag::err_fe_unable_to_load_plugin) << Path << Error;
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}
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// If there were any errors in processing arguments, exit now.
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if (Clang.getDiagnostics().getNumErrors())
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return 1;
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// Create the target instance.
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Clang.setTarget(TargetInfo::CreateTargetInfo(Clang.getDiagnostics(),
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Clang.getTargetOpts()));
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if (!Clang.hasTarget())
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return 1;
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// Inform the target of the language options
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//
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// FIXME: We shouldn't need to do this, the target should be immutable once
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// created. This complexity should be lifted elsewhere.
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Clang.getTarget().setForcedLangOptions(Clang.getLangOpts());
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// Validate/process some options
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if (Clang.getHeaderSearchOpts().Verbose)
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llvm::errs() << "clang -cc1 version " CLANG_VERSION_STRING
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<< " based upon " << PACKAGE_STRING
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<< " hosted on " << llvm::sys::getHostTriple() << "\n";
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if (Clang.getFrontendOpts().ShowTimers)
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Clang.createFrontendTimer();
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for (unsigned i = 0, e = Clang.getFrontendOpts().Inputs.size(); i != e; ++i) {
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const std::string &InFile = Clang.getFrontendOpts().Inputs[i].second;
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// If we aren't using an AST file, setup the file and source managers and
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// the preprocessor.
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bool IsAST =
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Clang.getFrontendOpts().Inputs[i].first == FrontendOptions::IK_AST;
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if (!IsAST) {
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if (!i) {
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// Create a file manager object to provide access to and cache the
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// filesystem.
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Clang.createFileManager();
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// Create the source manager.
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Clang.createSourceManager();
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} else {
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// Reset the ID tables if we are reusing the SourceManager.
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Clang.getSourceManager().clearIDTables();
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}
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// Create the preprocessor.
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Clang.createPreprocessor();
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}
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llvm::OwningPtr<FrontendAction> Act(CreateFrontendAction(Clang));
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if (!Act)
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break;
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if (Act->BeginSourceFile(Clang, InFile, IsAST)) {
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Act->Execute();
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Act->EndSourceFile();
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}
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}
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if (Clang.getDiagnosticOpts().ShowCarets)
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if (unsigned NumDiagnostics = Clang.getDiagnostics().getNumDiagnostics())
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fprintf(stderr, "%d diagnostic%s generated.\n", NumDiagnostics,
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(NumDiagnostics == 1 ? "" : "s"));
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if (Clang.getFrontendOpts().ShowStats) {
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Clang.getFileManager().PrintStats();
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fprintf(stderr, "\n");
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}
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// Return the appropriate status when verifying diagnostics.
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//
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// FIXME: If we could make getNumErrors() do the right thing, we wouldn't need
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// this.
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if (Clang.getDiagnosticOpts().VerifyDiagnostics)
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return static_cast<VerifyDiagnosticsClient&>(
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Clang.getDiagnosticClient()).HadErrors();
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// Managed static deconstruction. Useful for making things like
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// -time-passes usable.
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llvm::llvm_shutdown();
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return (Clang.getDiagnostics().getNumErrors() != 0);
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}
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