1 // 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 // rdar://12530881 3 4 void test19() { 5 __block id x; 6 // CHECK-UNOPT: define internal void @__Block_byref_object_copy 7 // CHECK-UNOPT: [[X:%.*]] = getelementptr inbounds [[BYREF_T:%.*]]* [[VAR:%.*]], i32 0, i32 6 8 // CHECK-UNOPT: [[X2:%.*]] = getelementptr inbounds [[BYREF_T:%.*]]* [[VAR1:%.*]], i32 0, i32 6 9 // CHECK-UNOPT-NEXT: [[SIX:%.*]] = load i8** [[X2]], align 8 10 // CHECK-UNOPT-NEXT: store i8* null, i8** [[X]], align 8 11 // CHECK-UNOPT-NEXT: call void @objc_storeStrong(i8** [[X]], i8* [[SIX]]) [[NUW:#[0-9]+]] 12 // CHECK-UNOPT-NEXT: call void @objc_storeStrong(i8** [[X2]], i8* null) [[NUW]] 13 // CHECK-UNOPT-NEXT: ret void 14 } 15 16 // CHECK: attributes [[NUW]] = { nounwind } 17
