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Export a public symbol for classes with the GNU runtime. 

llvm-svn: 92973
This commit is contained in:
David Chisnall 2010-01-08 00:14:31 +00:00
parent e0297b9206
commit df34917a38
1 changed files with 16 additions and 5 deletions
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21
clang/lib/CodeGen/CGObjCGNU.cpp
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@ -114,9 +114,11 @@ private:
llvm::Constant *ExportUniqueString(const std::string &Str, const std::string
prefix);
llvm::Constant *MakeGlobal(const llvm::StructType *Ty,
std::vector<llvm::Constant*> &V, const std::string &Name="");
std::vector<llvm::Constant*> &V, const std::string &Name="",
llvm::GlobalValue::LinkageTypes linkage=llvm::GlobalValue::InternalLinkage);
llvm::Constant *MakeGlobal(const llvm::ArrayType *Ty,
std::vector<llvm::Constant*> &V, const std::string &Name="");
std::vector<llvm::Constant*> &V, const std::string &Name="",
llvm::GlobalValue::LinkageTypes linkage=llvm::GlobalValue::InternalLinkage);
llvm::GlobalVariable *ObjCIvarOffsetVariable(const ObjCInterfaceDecl *ID,
const ObjCIvarDecl *Ivar);
void EmitClassRef(const std::string &className);
@ -257,6 +259,10 @@ CGObjCGNU::CGObjCGNU(CodeGen::CodeGenModule &cgm)
llvm::Value *CGObjCGNU::GetClass(CGBuilderTy &Builder,
const ObjCInterfaceDecl *OID) {
llvm::Value *ClassName = CGM.GetAddrOfConstantCString(OID->getNameAsString());
// With the incompatible ABI, this will need to be replaced with a direct
// reference to the class symbol. For the compatible nonfragile ABI we are
// still performing this lookup at run time but emitting the symbol for the
// class externally so that we can make the switch later.
EmitClassRef(OID->getNameAsString());
ClassName = Builder.CreateStructGEP(ClassName, 0);
@ -323,14 +329,16 @@ llvm::Constant *CGObjCGNU::ExportUniqueString(const std::string &Str,
}
llvm::Constant *CGObjCGNU::MakeGlobal(const llvm::StructType *Ty,
std::vector<llvm::Constant*> &V, const std::string &Name) {
std::vector<llvm::Constant*> &V, const std::string &Name,
llvm::GlobalValue::LinkageTypes linkage) {
llvm::Constant *C = llvm::ConstantStruct::get(Ty, V);
return new llvm::GlobalVariable(TheModule, Ty, false,
llvm::GlobalValue::InternalLinkage, C, Name);
}
llvm::Constant *CGObjCGNU::MakeGlobal(const llvm::ArrayType *Ty,
std::vector<llvm::Constant*> &V, const std::string &Name) {
std::vector<llvm::Constant*> &V, const std::string &Name,
llvm::GlobalValue::LinkageTypes linkage) {
llvm::Constant *C = llvm::ConstantArray::get(Ty, V);
return new llvm::GlobalVariable(TheModule, Ty, false,
llvm::GlobalValue::InternalLinkage, C, Name);
@ -703,7 +711,10 @@ llvm::Constant *CGObjCGNU::GenerateClassStructure(
Elements.push_back(IvarOffsets);
Elements.push_back(Properties);
// Create an instance of the structure
return MakeGlobal(ClassTy, Elements, SymbolNameForClass(Name));
// This is now an externally visible symbol, so that we can speed up class
// messages in the next ABI.
return MakeGlobal(ClassTy, Elements, SymbolNameForClass(Name),
llvm::GlobalValue::ExternalLinkage);
}
llvm::Constant *CGObjCGNU::GenerateProtocolMethodList(