diff options
| -rw-r--r-- | lib/CodeGen/CGCXX.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/lib/CodeGen/CGCXX.cpp b/lib/CodeGen/CGCXX.cpp index 4889fc08f4..cd5d64697d 100644 --- a/lib/CodeGen/CGCXX.cpp +++ b/lib/CodeGen/CGCXX.cpp @@ -109,6 +109,16 @@ bool CodeGenModule::TryEmitBaseDestructorAsAlias(const CXXDestructorDecl *D) { GlobalDecl(BaseD, Dtor_Base)); } +static bool isWeakForLinker(llvm::GlobalValue::LinkageTypes Linkage) { + return (Linkage == llvm::GlobalValue::AvailableExternallyLinkage || + Linkage == llvm::GlobalValue::WeakAnyLinkage || + Linkage == llvm::GlobalValue::WeakODRLinkage || + Linkage == llvm::GlobalValue::LinkOnceAnyLinkage || + Linkage == llvm::GlobalValue::LinkOnceODRLinkage || + Linkage == llvm::GlobalValue::CommonLinkage || + Linkage == llvm::GlobalValue::ExternalWeakLinkage); +} + /// Try to emit a definition as a global alias for another definition. bool CodeGenModule::TryEmitDefinitionAsAlias(GlobalDecl AliasDecl, GlobalDecl TargetDecl) { @@ -142,6 +152,12 @@ bool CodeGenModule::TryEmitDefinitionAsAlias(GlobalDecl AliasDecl, return true; } + llvm::GlobalValue::LinkageTypes TargetLinkage + = getFunctionLinkage(cast<FunctionDecl>(TargetDecl.getDecl())); + + if (isWeakForLinker(TargetLinkage)) + return true; + // Derive the type for the alias. const llvm::PointerType *AliasType = getTypes().GetFunctionType(AliasDecl)->getPointerTo(); |