xref: /aosp_15_r20/external/clang/test/CodeGenObjC/arc-unoptimized-byref-var.m (revision 67e74705e28f6214e480b399dd47ea732279e315) 
1*67e74705SXin Li// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -o - %s | FileCheck -check-prefix=CHECK-UNOPT %s
2*67e74705SXin Li// rdar://12530881
3*67e74705SXin Li
4*67e74705SXin Livoid test19() {
5*67e74705SXin Li   __block id x;
6*67e74705SXin Li// CHECK-UNOPT-LABEL: define internal void @__Block_byref_object_copy
7*67e74705SXin Li// CHECK-UNOPT: [[X:%.*]] = getelementptr inbounds [[BYREF_T:%.*]], [[BYREF_T:%.*]]* [[VAR:%.*]], i32 0, i32 6
8*67e74705SXin Li// CHECK-UNOPT: [[X2:%.*]] = getelementptr inbounds [[BYREF_T:%.*]], [[BYREF_T:%.*]]* [[VAR1:%.*]], i32 0, i32 6
9*67e74705SXin Li// CHECK-UNOPT-NEXT: [[SIX:%.*]] = load i8*, i8** [[X2]], align 8
10*67e74705SXin Li// CHECK-UNOPT-NEXT: store i8* null, i8** [[X]], align 8
11*67e74705SXin Li// CHECK-UNOPT-NEXT: call void @objc_storeStrong(i8** [[X]], i8* [[SIX]]) [[NUW:#[0-9]+]]
12*67e74705SXin Li// CHECK-UNOPT-NEXT: call void @objc_storeStrong(i8** [[X2]], i8* null) [[NUW]]
13*67e74705SXin Li// CHECK-UNOPT-NEXT: ret void
14*67e74705SXin Li}
15*67e74705SXin Li
16*67e74705SXin Li// CHECK: attributes [[NUW]] = { nounwind }
17