construct debug info for "id" by hand.
Tested by mi1-var-obj.exp in gdb testsuite.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109571 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp
index 8e9f416..1bdc910 100644
--- a/lib/CodeGen/CGDebugInfo.cpp
+++ b/lib/CodeGen/CGDebugInfo.cpp
@@ -251,12 +251,44 @@
default:
case BuiltinType::Void:
return llvm::DIType();
- case BuiltinType::ObjCId:
- // id is struct objc_object *.
+ case BuiltinType::ObjCClass:
return DebugFactory.CreateCompositeType(llvm::dwarf::DW_TAG_structure_type,
- Unit, "objc_object", Unit, 0, 0, 0, 0,
+ Unit, "objc_class", Unit, 0, 0, 0, 0,
llvm::DIType::FlagFwdDecl,
llvm::DIType(), llvm::DIArray());
+ case BuiltinType::ObjCId: {
+ // typedef struct objc_class *Class;
+ // typedef struct objc_object {
+ // Class isa;
+ // } *id;
+
+ llvm::DIType OCTy =
+ DebugFactory.CreateCompositeType(llvm::dwarf::DW_TAG_structure_type,
+ Unit, "objc_class", Unit, 0, 0, 0, 0,
+ llvm::DIType::FlagFwdDecl,
+ llvm::DIType(), llvm::DIArray());
+ unsigned Size = CGM.getContext().getTypeSize(CGM.getContext().VoidPtrTy);
+
+ llvm::DIType ISATy =
+ DebugFactory.CreateDerivedType(llvm::dwarf::DW_TAG_pointer_type,
+ Unit, "", Unit,
+ 0, Size, 0, 0, 0, OCTy);
+
+ llvm::SmallVector<llvm::DIDescriptor, 16> EltTys;
+
+ llvm::DIType FieldTy =
+ DebugFactory.CreateDerivedType(llvm::dwarf::DW_TAG_member, Unit,
+ "isa", Unit,
+ 0,Size, 0, 0, 0, ISATy);
+ EltTys.push_back(FieldTy);
+ llvm::DIArray Elements =
+ DebugFactory.GetOrCreateArray(EltTys.data(), EltTys.size());
+
+ return DebugFactory.CreateCompositeType(llvm::dwarf::DW_TAG_structure_type,
+ Unit, "objc_object", Unit, 0, 0, 0, 0,
+ 0,
+ llvm::DIType(), Elements);
+ }
case BuiltinType::UChar:
case BuiltinType::Char_U: Encoding = llvm::dwarf::DW_ATE_unsigned_char; break;
case BuiltinType::Char_S: