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Debug Info: Use the module pointer as key for the module cache.

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This way we don't need to rebuild the full module name for every decl.

llvm-svn: 248510
This commit is contained in:
Adrian Prantl
2015-09-24 16:10:04 +00:00
parent 6083b08580
commit eb66a263c2
3 changed files with 11 additions and 6 deletions
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14
clang/lib/CodeGen/CGDebugInfo.cpp
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@@ -1676,8 +1676,11 @@ llvm::DIType *CGDebugInfo::CreateType(const ObjCInterfaceType *Ty,
llvm::DIModule *
CGDebugInfo::getOrCreateModuleRef(ExternalASTSource::ASTSourceDescriptor Mod,
bool CreateSkeletonCU) {
std::string FullModuleName = Mod.getFullModuleName();
auto &ModRef = ModuleRefCache[FullModuleName];
// Use the Module pointer as the key into the cache. This is a
// nullptr if the "Module" is a PCH, which is safe because we don't
// support chained PCH debug info, so there can only be a single PCH.
const Module *M = Mod.getModuleOrNull();
auto &ModRef = ModuleCache[M];
if (ModRef)
return cast<llvm::DIModule>(ModRef);
@@ -1704,6 +1707,7 @@ CGDebugInfo::getOrCreateModuleRef(ExternalASTSource::ASTSourceDescriptor Mod,
}
}
std::string FullModuleName = Mod.getFullModuleName();
if (CreateSkeletonCU) {
llvm::DIBuilder DIB(CGM.getModule());
DIB.createCompileUnit(TheCU->getSourceLanguage(), FullModuleName,
@@ -1712,11 +1716,11 @@ CGDebugInfo::getOrCreateModuleRef(ExternalASTSource::ASTSourceDescriptor Mod,
llvm::DIBuilder::FullDebug, Mod.getSignature());
DIB.finalize();
}
llvm::DIModule *M =
llvm::DIModule *DIMod =
DBuilder.createModule(TheCU, FullModuleName, ConfigMacros, Mod.getPath(),
CGM.getHeaderSearchOpts().Sysroot);
ModRef.reset(M);
return M;
ModRef.reset(DIMod);
return DIMod;
}
llvm::DIType *CGDebugInfo::CreateTypeDefinition(const ObjCInterfaceType *Ty,