objc2's nonfragile-abi - API selection for when receiver is a class
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63881 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGObjCMac.cpp b/lib/CodeGen/CGObjCMac.cpp
index 4d4d130..8b0c9bb 100644
--- a/lib/CodeGen/CGObjCMac.cpp
+++ b/lib/CodeGen/CGObjCMac.cpp
@@ -657,6 +657,11 @@
bool IsSuper,
const CallArgList &CallArgs);
+ /// EmitClassRef - Return a Value*, of type ObjCTypes.ClassPtrTy,
+ /// for the given class.
+ llvm::Value *EmitClassRef(CGBuilderTy &Builder,
+ const ObjCInterfaceDecl *ID);
+
public:
CGObjCNonFragileABIMac(CodeGen::CodeGenModule &cgm);
// FIXME. All stubs for now!
@@ -679,7 +684,7 @@
const CallArgList &CallArgs){ return RValue::get(0);}
virtual llvm::Value *GetClass(CGBuilderTy &Builder,
- const ObjCInterfaceDecl *ID){ return 0; }
+ const ObjCInterfaceDecl *ID);
virtual llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel)
{ return 0; }
@@ -3589,38 +3594,41 @@
flags |= CLS_ROOT;
std::string SuperClassName = ObjCClassName + ClassName;
SuperClassGV = CGM.getModule().getGlobalVariable(SuperClassName);
- if (!SuperClassGV)
+ if (!SuperClassGV) {
SuperClassGV =
new llvm::GlobalVariable(ObjCTypes.ClassnfABITy, false,
llvm::GlobalValue::ExternalLinkage,
0,
SuperClassName,
&CGM.getModule());
- UsedGlobals.push_back(SuperClassGV);
+ UsedGlobals.push_back(SuperClassGV);
+ }
std::string IsAClassName = ObjCMetaClassName + ClassName;
IsAGV = CGM.getModule().getGlobalVariable(IsAClassName);
- if (!IsAGV)
+ if (!IsAGV) {
IsAGV =
new llvm::GlobalVariable(ObjCTypes.ClassnfABITy, false,
llvm::GlobalValue::ExternalLinkage,
0,
IsAClassName,
&CGM.getModule());
- UsedGlobals.push_back(IsAGV);
+ UsedGlobals.push_back(IsAGV);
+ }
} else {
// Has a root. Current class is not a root.
std::string RootClassName =
ID->getClassInterface()->getSuperClass()->getNameAsString();
std::string SuperClassName = ObjCMetaClassName + RootClassName;
SuperClassGV = CGM.getModule().getGlobalVariable(SuperClassName);
- if (!SuperClassGV)
+ if (!SuperClassGV) {
SuperClassGV =
new llvm::GlobalVariable(ObjCTypes.ClassnfABITy, false,
llvm::GlobalValue::ExternalLinkage,
0,
SuperClassName,
&CGM.getModule());
- UsedGlobals.push_back(SuperClassGV);
+ UsedGlobals.push_back(SuperClassGV);
+ }
IsAGV = SuperClassGV;
}
llvm::GlobalVariable *CLASS_RO_GV = BuildClassRoTInitializer(flags,
@@ -3645,15 +3653,15 @@
ID->getClassInterface()->getSuperClass()->getNameAsString();
std::string SuperClassName = ObjCClassName + RootClassName;
SuperClassGV = CGM.getModule().getGlobalVariable(SuperClassName);
- if (!SuperClassGV)
+ if (!SuperClassGV) {
SuperClassGV =
new llvm::GlobalVariable(ObjCTypes.ClassnfABITy, false,
llvm::GlobalValue::ExternalLinkage,
0,
SuperClassName,
&CGM.getModule());
- UsedGlobals.push_back(SuperClassGV);
-
+ UsedGlobals.push_back(SuperClassGV);
+ }
}
InstanceStart = InstanceSize = 0;
@@ -4394,6 +4402,47 @@
false, CallArgs);
}
+llvm::Value *CGObjCNonFragileABIMac::EmitClassRef(CGBuilderTy &Builder,
+ const ObjCInterfaceDecl *ID) {
+
+ llvm::GlobalVariable *&Entry = ClassReferences[ID->getIdentifier()];
+
+ if (!Entry) {
+ std::string ClassName("\01_OBJC_CLASS_$_" + ID->getNameAsString());
+ llvm::GlobalVariable *ClassGV =
+ CGM.getModule().getGlobalVariable(ClassName);
+ if (!ClassGV) {
+ ClassGV =
+ new llvm::GlobalVariable(ObjCTypes.ClassnfABITy, false,
+ llvm::GlobalValue::ExternalLinkage,
+ 0,
+ ClassName,
+ &CGM.getModule());
+ UsedGlobals.push_back(ClassGV);
+ }
+ Entry =
+ new llvm::GlobalVariable(ObjCTypes.ClassnfABIPtrTy, false,
+ llvm::GlobalValue::InternalLinkage,
+ ClassGV, "\01L_OBJC_CLASSLIST_REFERENCES_$_",
+ &CGM.getModule());
+ Entry->setAlignment(
+ CGM.getTargetData().getPrefTypeAlignment(
+ ObjCTypes.ClassnfABIPtrTy));
+
+ Entry->setSection("__OBJC,__objc_classrefs,regular,no_dead_strip");
+ UsedGlobals.push_back(Entry);
+ }
+
+ return Builder.CreateLoad(Entry, false, "tmp");
+}
+
+/// GetClass - Return a reference to the class for the given interface
+/// decl.
+llvm::Value *CGObjCNonFragileABIMac::GetClass(CGBuilderTy &Builder,
+ const ObjCInterfaceDecl *ID) {
+ return EmitClassRef(Builder, ID);
+}
+
/* *** */
CodeGen::CGObjCRuntime *