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CodeGen: Introduce CodeGenModule::CreateMetadataIdentifierForType.

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This function can be used to create a metadata identifier for a specific
type. No functionality change, but this will be used by D11857 and D12026.

Differential Revision: http://reviews.llvm.org/D12038

llvm-svn: 247098
This commit is contained in:
Peter Collingbourne
2015-09-08 23:01:30 +00:00
parent e438e07856
commit 25a80bf9b6
2 changed files with 30 additions and 0 deletions
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19
clang/lib/CodeGen/CodeGenModule.cpp
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@@ -3803,6 +3803,25 @@ void CodeGenModule::EmitOMPThreadPrivateDecl(const OMPThreadPrivateDecl *D) {
}
}
llvm::Metadata *CodeGenModule::CreateMetadataIdentifierForType(QualType T) {
llvm::Metadata *&InternalId = MetadataIdMap[T.getCanonicalType()];
if (InternalId)
return InternalId;
if (isExternallyVisible(T->getLinkage())) {
std::string OutName;
llvm::raw_string_ostream Out(OutName);
getCXXABI().getMangleContext().mangleTypeName(T, Out);
InternalId = llvm::MDString::get(getLLVMContext(), Out.str());
} else {
InternalId = llvm::MDNode::getDistinct(getLLVMContext(),
llvm::ArrayRef<llvm::Metadata *>());
}
return InternalId;
}
llvm::MDTuple *CodeGenModule::CreateVTableBitSetEntry(
llvm::GlobalVariable *VTable, CharUnits Offset, const CXXRecordDecl *RD) {
std::string OutName;