--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clang/test/CodeGenObjC/atomic-aggregate-property.m	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,53 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10  -fobjc-gc -emit-llvm -o - %s | FileCheck -check-prefix CHECK-LP64 %s
+// RUN: %clang_cc1 -x objective-c++ -triple x86_64-apple-darwin10  -fobjc-gc -emit-llvm -o - %s | FileCheck -check-prefix CHECK-LP64 %s
+// rdar: // 7849824
+// <rdar://problem/12547611>
+
+struct s {
+  double a, b, c, d;  
+};
+
+struct s1 {
+    int i;
+    id j;
+    id k;
+};
+
+struct s2 {};
+
+@interface A 
+@property (readwrite) double x;
+@property (readwrite) struct s y;
+@property (nonatomic, readwrite) struct s1 z;
+@property (readwrite) struct s2 a;
+@end
+
+@implementation A
+@synthesize x;
+@synthesize y;
+@synthesize z;
+@synthesize a;
+@end
+// CHECK-LP64: define internal double @"\01-[A x]"(
+// CHECK-LP64: load atomic i64, i64* {{%.*}} unordered, align 8
+
+// CHECK-LP64: define internal void @"\01-[A setX:]"(
+// CHECK-LP64: store atomic i64 {{%.*}}, i64* {{%.*}} unordered, align 8
+
+// CHECK-LP64: define internal void @"\01-[A y]"(
+// CHECK-LP64: call void @objc_copyStruct(i8* {{%.*}}, i8* {{%.*}}, i64 32, i1 zeroext true, i1 zeroext false)
+
+// CHECK-LP64: define internal void @"\01-[A setY:]"(
+// CHECK-LP64: call void @objc_copyStruct(i8* {{%.*}}, i8* {{%.*}}, i64 32, i1 zeroext true, i1 zeroext false)
+
+// CHECK-LP64: define internal void @"\01-[A z]"(
+// CHECK-LP64: call i8* @objc_memmove_collectable(
+
+// CHECK-LP64: define internal void @"\01-[A setZ:]"(
+// CHECK-LP64: call i8* @objc_memmove_collectable(
+
+// CHECK-LP64: define internal void @"\01-[A a]"(
+// (do nothing)
+
+// CHECK-LP64: define internal void @"\01-[A setA:]"(
+// (do nothing)