898229ab4b
The big changes are: - Deleting Driver/(Arg|Opt)* - Rewriting includes to llvm/Option/ and re-sorting - 'using namespace llvm::opt' in clang::driver - Fixing the autoconf build by adding option everywhere As discussed in the review, this change includes using directives in header files. I'll make follow up changes to remove those in favor of name specifiers. Reviewers: espindola Differential Revision: http://llvm-reviews.chandlerc.com/D975 llvm-svn: 183989
125 lines
4.8 KiB
C++
125 lines
4.8 KiB
C++
//===-- cc1_main.cpp - Clang CC1 Compiler Frontend ------------------------===//
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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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// 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 "llvm/Option/Arg.h"
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#include "clang/Driver/DriverDiagnostic.h"
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#include "clang/Driver/Options.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Frontend/CompilerInvocation.h"
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#include "clang/Frontend/FrontendDiagnostic.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/FrontendTool/Utils.h"
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#include "llvm/ADT/Statistic.h"
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#include "llvm/LinkAllPasses.h"
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#include "llvm/Option/ArgList.h"
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#include "llvm/Option/OptTable.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/Signals.h"
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#include "llvm/Support/TargetSelect.h"
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#include "llvm/Support/Timer.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cstdio>
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using namespace clang;
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using namespace llvm::opt;
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//===----------------------------------------------------------------------===//
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// Main driver
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//===----------------------------------------------------------------------===//
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static void LLVMErrorHandler(void *UserData, const std::string &Message,
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bool GenCrashDiag) {
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DiagnosticsEngine &Diags = *static_cast<DiagnosticsEngine*>(UserData);
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Diags.Report(diag::err_fe_error_backend) << Message;
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// Run the interrupt handlers to make sure any special cleanups get done, in
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// particular that we remove files registered with RemoveFileOnSignal.
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llvm::sys::RunInterruptHandlers();
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// We cannot recover from llvm errors. When reporting a fatal error, exit
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// with status 70 to generate crash diagnostics. For BSD systems this is
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// defined as an internal software error. Otherwise, exit with status 1.
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exit(GenCrashDiag ? 70 : 1);
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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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OwningPtr<CompilerInstance> Clang(new CompilerInstance());
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IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
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// Initialize targets first, so that --version shows registered targets.
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llvm::InitializeAllTargets();
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llvm::InitializeAllTargetMCs();
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llvm::InitializeAllAsmPrinters();
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llvm::InitializeAllAsmParsers();
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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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IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
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TextDiagnosticBuffer *DiagsBuffer = new TextDiagnosticBuffer;
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DiagnosticsEngine Diags(DiagID, &*DiagOpts, DiagsBuffer);
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bool Success;
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Success = CompilerInvocation::CreateFromArgs(Clang->getInvocation(),
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ArgBegin, ArgEnd, Diags);
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// Infer the builtin include path if unspecified.
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if (Clang->getHeaderSearchOpts().UseBuiltinIncludes &&
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Clang->getHeaderSearchOpts().ResourceDir.empty())
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Clang->getHeaderSearchOpts().ResourceDir =
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CompilerInvocation::GetResourcesPath(Argv0, MainAddr);
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// Create the actual diagnostics engine.
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Clang->createDiagnostics();
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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::install_fatal_error_handler(LLVMErrorHandler,
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static_cast<void*>(&Clang->getDiagnostics()));
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DiagsBuffer->FlushDiagnostics(Clang->getDiagnostics());
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if (!Success)
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return 1;
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// Execute the frontend actions.
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Success = ExecuteCompilerInvocation(Clang.get());
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// If any timers were active but haven't been destroyed yet, print their
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// results now. This happens in -disable-free mode.
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llvm::TimerGroup::printAll(llvm::errs());
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// Our error handler depends on the Diagnostics object, which we're
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// potentially about to delete. Uninstall the handler now so that any
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// later errors use the default handling behavior instead.
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llvm::remove_fatal_error_handler();
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// When running with -disable-free, don't do any destruction or shutdown.
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if (Clang->getFrontendOpts().DisableFree) {
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if (llvm::AreStatisticsEnabled() || Clang->getFrontendOpts().ShowStats)
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llvm::PrintStatistics();
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Clang.take();
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return !Success;
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}
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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 !Success;
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}
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