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This is a necessary prerequisite for debugging with modules. The .pcm files become containers that hold the serialized AST which allows us to store debug information in the module file that can be shared by all object files that were built importing the module. This reapplies r230044 with a fixed configure+make build and updated dependencies and testcase requirements. Over the last iteration this version adds - missing target requirements for testcases that specify an x86 triple, - a missing clangCodeGen.a dependency to libClang.a in the make build. rdar://problem/19104245 llvm-svn: 230423
68 lines
2.0 KiB
C++
68 lines
2.0 KiB
C++
//===--- GeneratePCH.cpp - Sema Consumer for PCH Generation -----*- C++ -*-===//
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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 file defines the PCHGenerator, which as a SemaConsumer that generates
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// a PCH file.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Serialization/ASTWriter.h"
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#include "clang/AST/ASTConsumer.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/Basic/FileManager.h"
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#include "clang/Lex/Preprocessor.h"
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#include "clang/Sema/SemaConsumer.h"
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#include "llvm/Bitcode/BitstreamWriter.h"
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#include <string>
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using namespace clang;
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PCHGenerator::PCHGenerator(const Preprocessor &PP,
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StringRef OutputFile,
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clang::Module *Module,
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StringRef isysroot,
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bool AllowASTWithErrors)
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: PP(PP), OutputFile(OutputFile), Module(Module),
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isysroot(isysroot.str()),
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SemaPtr(nullptr), Stream(Buffer),
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Writer(Stream),
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AllowASTWithErrors(AllowASTWithErrors),
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HasEmittedPCH(false) {
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}
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PCHGenerator::~PCHGenerator() {
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}
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void PCHGenerator::HandleTranslationUnit(ASTContext &Ctx) {
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// Don't create a PCH if there were fatal failures during module loading.
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if (PP.getModuleLoader().HadFatalFailure)
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return;
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bool hasErrors = PP.getDiagnostics().hasErrorOccurred();
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if (hasErrors && !AllowASTWithErrors)
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return;
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// Emit the PCH file
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assert(SemaPtr && "No Sema?");
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Writer.WriteAST(*SemaPtr, OutputFile, Module, isysroot, hasErrors);
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if (SerializationFinishedCallback)
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SerializationFinishedCallback(&Buffer);
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HasEmittedPCH = true;
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}
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ASTMutationListener *PCHGenerator::GetASTMutationListener() {
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return &Writer;
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}
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ASTDeserializationListener *PCHGenerator::GetASTDeserializationListener() {
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return &Writer;
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}
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