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Introduce a PCHContainerOperations interface (NFC).

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A PCHContainerOperations abstract interface provides operations for
creating and unwrapping containers for serialized ASTs (precompiled
headers and clang modules). The default implementation is
RawPCHContainerOperations, which uses a flat file for the output.

The main application for this interface will be an
ObjectFilePCHContainerOperations implementation that uses LLVM to
wrap the module in an ELF/Mach-O/COFF container to store debug info
alongside the AST.

rdar://problem/20091852

llvm-svn: 240225
This commit is contained in:
Adrian Prantl
2015-06-20 18:53:08 +00:00
parent 6ed81cbcdb
commit bb165fb04d
38 changed files with 694 additions and 374 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
clang/lib/Frontend/InitPreprocessor.cpp
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@@ -97,10 +97,11 @@ static void AddImplicitIncludePTH(MacroBuilder &Builder, Preprocessor &PP,
/// \brief Add an implicit \#include using the original file used to generate
/// a PCH file.
static void AddImplicitIncludePCH(MacroBuilder &Builder, Preprocessor &PP,
const PCHContainerOperations &PCHContainerOps,
StringRef ImplicitIncludePCH) {
std::string OriginalFile =
ASTReader::getOriginalSourceFile(ImplicitIncludePCH, PP.getFileManager(),
PP.getDiagnostics());
ASTReader::getOriginalSourceFile(ImplicitIncludePCH, PP.getFileManager(),
PCHContainerOps, PP.getDiagnostics());
if (OriginalFile.empty())
return;
@@ -891,9 +892,10 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
/// InitializePreprocessor - Initialize the preprocessor getting it and the
/// environment ready to process a single file. This returns true on error.
///
void clang::InitializePreprocessor(Preprocessor &PP,
const PreprocessorOptions &InitOpts,
const FrontendOptions &FEOpts) {
void clang::InitializePreprocessor(
Preprocessor &PP, const PreprocessorOptions &InitOpts,
const PCHContainerOperations &PCHContainerOps,
const FrontendOptions &FEOpts) {
const LangOptions &LangOpts = PP.getLangOpts();
std::string PredefineBuffer;
PredefineBuffer.reserve(4080);
@@ -952,7 +954,8 @@ void clang::InitializePreprocessor(Preprocessor &PP,
// Process -include-pch/-include-pth directives.
if (!InitOpts.ImplicitPCHInclude.empty())
AddImplicitIncludePCH(Builder, PP, InitOpts.ImplicitPCHInclude);
AddImplicitIncludePCH(Builder, PP, PCHContainerOps,
InitOpts.ImplicitPCHInclude);
if (!InitOpts.ImplicitPTHInclude.empty())
AddImplicitIncludePTH(Builder, PP, InitOpts.ImplicitPTHInclude);