1// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -std=c++11 -o - %s | FileCheck %s 2 3__attribute((objc_root_class)) @interface A @end 4@interface B : A @end 5 6// rdar://problem/23559789 7// Ensure that type differences don't cause an assert here. 8void test0(__weak B **src) { 9 __weak A *dest = *src; 10} 11// CHECK-LABEL: define void @_Z5test0PU6__weakP1B( 12// CHECK: [[SRC:%.*]] = alloca [[B:%.*]]**, align 8 13// CHECK: [[DEST:%.*]] = alloca [[A:%.*]]*, align 8 14// CHECK: [[T0:%.*]] = load [[B]]**, [[B]]*** [[SRC]], align 8 15// CHECK-NEXT: [[T1:%.*]] = bitcast [[B]]** [[T0]] to [[A]]** 16// CHECK-NEXT: [[T2:%.*]] = bitcast [[A]]** [[DEST]] to i8** 17// CHECK-NEXT: [[T3:%.*]] = bitcast [[A]]** [[T1]] to i8** 18// CHECK-NEXT: call void @llvm.objc.copyWeak(i8** [[T2]], i8** [[T3]]) 19// CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]** [[DEST]] to i8** 20// CHECK: call void @llvm.objc.destroyWeak(i8** [[T0]]) 21 22void test1(__weak B **src) { 23 __weak A *dest = static_cast<__weak B*&&>(*src); 24} 25// CHECK-LABEL: define void @_Z5test1PU6__weakP1B( 26// CHECK: [[SRC:%.*]] = alloca [[B:%.*]]**, align 8 27// CHECK: [[DEST:%.*]] = alloca [[A:%.*]]*, align 8 28// CHECK: [[T0:%.*]] = load [[B]]**, [[B]]*** [[SRC]], align 8 29// CHECK-NEXT: [[T1:%.*]] = bitcast [[B]]** [[T0]] to [[A]]** 30// CHECK-NEXT: [[T2:%.*]] = bitcast [[A]]** [[DEST]] to i8** 31// CHECK-NEXT: [[T3:%.*]] = bitcast [[A]]** [[T1]] to i8** 32// CHECK-NEXT: call void @llvm.objc.moveWeak(i8** [[T2]], i8** [[T3]]) 33// CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]** [[DEST]] to i8** 34// CHECK: call void @llvm.objc.destroyWeak(i8** [[T0]]) 35