Class Property: generate metadata for class properties in categories.

The list of class properties is saved in
Old ABI: category->class_properties (category->size will be updated as well)
New ABI: category->class_properties (a flag in objc_image_info to indicate
         whether or not the list of class properties is present)

rdar://23891898

llvm-svn: 259267

1 files changed, 24 insertions, 0 deletions

diff --git a/clang/test/CodeGenObjC/metadata-class-properties.m b/clang/test/CodeGenObjC/metadata-class-properties.m
new file mode 100644
index 00000000000..f5258424cac
--- /dev/null
+++ b/clang/test/CodeGenObjC/metadata-class-properties.m
@@ -0,0 +1,24 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10  -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10  -emit-llvm -o - -fobjc-runtime=macosx-fragile-10.5 %s | FileCheck -check-prefix=CHECK-FRAGILE %s
+
+// CHECK: @"\01l_OBJC_$_CLASS_PROP_LIST_Foo_$_Category" = private global {{.*}} section "__DATA, __objc_const", align 8
+// CHECK: @"\01l_OBJC_$_CATEGORY_Foo_$_Category" = private global %struct._category_t { {{.*}} @"\01l_OBJC_$_CLASS_PROP_LIST_Foo_$_Category" {{.*}} }, section "__DATA, __objc_const", align 8
+
+// CHECK: !{i32 1, !"Objective-C Class Properties", i32 64}
+
+// CHECK-FRAGILE: @"\01l_OBJC_$_CLASS_PROP_LIST_Foo_Category" = private global {{.*}} section "__OBJC,__property,regular,no_dead_strip", align 8
+// CHECK-FRAGILE: @OBJC_CATEGORY_Foo_Category = private global %struct._objc_category { {{.*}}, i32 64, {{.*}} @"\01l_OBJC_$_CLASS_PROP_LIST_Foo_Category" {{.*}} }, section "__OBJC,__category,regular,no_dead_strip", align 8
+
+// CHECK-FRAGILE: !{i32 1, !"Objective-C Class Properties", i32 64}
+
+@interface Foo @end
+
+@protocol Proto
+@property (class, readonly) int proto_property;
+@end
+
+@interface Foo (Category) <Proto> @end
+
+@implementation Foo (Category)
++(int)proto_property { return 0; }
+@end