| // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -std=c++11 -o - %s | FileCheck %s |
| |
| __attribute((objc_root_class)) @interface A @end |
| @interface B : A @end |
| |
| // rdar://problem/23559789 |
| // Ensure that type differences don't cause an assert here. |
| void test0(__weak B **src) { |
| __weak A *dest = *src; |
| } |
| // CHECK-LABEL: define void @_Z5test0PU6__weakP1B( |
| // CHECK: [[SRC:%.*]] = alloca [[B:%.*]]**, align 8 |
| // CHECK: [[DEST:%.*]] = alloca [[A:%.*]]*, align 8 |
| // CHECK: [[T0:%.*]] = load [[B]]**, [[B]]*** [[SRC]], align 8 |
| // CHECK-NEXT: [[T1:%.*]] = bitcast [[B]]** [[T0]] to [[A]]** |
| // CHECK-NEXT: [[T2:%.*]] = bitcast [[A]]** [[DEST]] to i8** |
| // CHECK-NEXT: [[T3:%.*]] = bitcast [[A]]** [[T1]] to i8** |
| // CHECK-NEXT: call void @llvm.objc.copyWeak(i8** [[T2]], i8** [[T3]]) |
| // CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]** [[DEST]] to i8** |
| // CHECK: call void @llvm.objc.destroyWeak(i8** [[T0]]) |
| |
| void test1(__weak B **src) { |
| __weak A *dest = static_cast<__weak B*&&>(*src); |
| } |
| // CHECK-LABEL: define void @_Z5test1PU6__weakP1B( |
| // CHECK: [[SRC:%.*]] = alloca [[B:%.*]]**, align 8 |
| // CHECK: [[DEST:%.*]] = alloca [[A:%.*]]*, align 8 |
| // CHECK: [[T0:%.*]] = load [[B]]**, [[B]]*** [[SRC]], align 8 |
| // CHECK-NEXT: [[T1:%.*]] = bitcast [[B]]** [[T0]] to [[A]]** |
| // CHECK-NEXT: [[T2:%.*]] = bitcast [[A]]** [[DEST]] to i8** |
| // CHECK-NEXT: [[T3:%.*]] = bitcast [[A]]** [[T1]] to i8** |
| // CHECK-NEXT: call void @llvm.objc.moveWeak(i8** [[T2]], i8** [[T3]]) |
| // CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]** [[DEST]] to i8** |
| // CHECK: call void @llvm.objc.destroyWeak(i8** [[T0]]) |
