1 files changed, 73 insertions, 0 deletions
diff --git a/clang/test/CodeGenObjC/id-isa-codegen.m b/clang/test/CodeGenObjC/id-isa-codegen.m
new file mode 100644
index 0000000..8cac750
--- /dev/null
+++ b/clang/test/CodeGenObjC/id-isa-codegen.m
@@ -0,0 +1,73 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fobjc-fragile-abi  -emit-llvm -o - %s | FileCheck -check-prefix LP64 %s
+// RUN: %clang_cc1 -triple i386-apple-darwin9 -fobjc-fragile-abi  -emit-llvm -o - %s | FileCheck -check-prefix LP32 %s
+
+typedef struct objc_class *Class;
+
+typedef struct objc_object {
+    Class isa;
+} *id;
+
+@interface I
++ (Class) class;
+- (void)meth : (id)object : (id)src_object;
++ (unsigned char) isSubclassOfClass:(Class)aClass ;
+@end
+
+@implementation I
++ (Class) class {return 0;}
++ (unsigned char) isSubclassOfClass:(Class)aClass {return 0;}
+- (void)meth : (id)object  : (id)src_object {
+    [object->isa isSubclassOfClass:[I class]];
+
+    [(*object).isa isSubclassOfClass:[I class]];
+
+    object->isa = src_object->isa;
+    (*src_object).isa = (*object).isa;
+}
+@end
+
+
+// rdar 7470820
+static Class MyClass;
+
+Class Test(const void *inObject1) {
+  if(((id)inObject1)->isa == MyClass)
+   return ((id)inObject1)->isa;
+  return (id)0;
+}
+
+// rdar 7609722
+@interface Foo { 
+@public 
+  id isa; 
+} 
++(id)method;
+@end
+
+id Test2() {
+    if([Foo method]->isa)
+      return (*[Foo method]).isa;
+    return [Foo method]->isa;
+}
+
+// rdar 7709015
+@interface Cat   {}
+@end
+
+@interface SuperCat : Cat {}
++(void)geneticallyAlterCat:(Cat *)cat;
+@end
+
+@implementation SuperCat
++ (void)geneticallyAlterCat:(Cat *)cat {
+    Class dynamicSubclass;
+    ((id)cat)->isa = dynamicSubclass;
+}
+@end
+// CHECK-LP64: %{{.*}} = load i8** %
+// CHECK-NEXT: %{{.*}} = bitcast i8* %{{.*}} to i8**
+// CHECK-NEXT: store i8* %{{.*}}, i8** %{{.*}}
+
+// CHECK-LP32: %{{.*}} = load i8** %
+// CHECK-NEXT: %{{.*}} = bitcast i8* %{{.*}} to i8**
+// CHECK-NEXT: store i8* %{{.*}}, i8** %{{.*}}