1// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-arc -fobjc-runtime-has-weak -o - -std=c++11 %s | FileCheck %s 2 3// CHECK: %[[TYPE:[a-z0-9]+]] = type opaque 4// CHECK: @[[CFSTRING:[a-z0-9_]+]] = private global %struct.__NSConstantString_tag 5@class NSString; 6 7// CHECK-LABEL: define void @_Z5test1v 8// CHECK: %[[ALLOCA:[A-Z]+]] = alloca %[[TYPE]]* 9// CHECK: %[[V0:[0-9]+]] = call i8* @llvm.objc.retain(i8* bitcast (%struct.__NSConstantString_tag* @[[CFSTRING]] 10// CHECK: %[[V1:[0-9]+]] = bitcast i8* %[[V0]] to %[[TYPE]]* 11// CHECK: store %[[TYPE]]* %[[V1]], %[[TYPE]]** %[[ALLOCA]] 12// CHECK: %[[V2:[0-9]+]] = bitcast %[[TYPE]]** %[[ALLOCA]] 13// CHECK: call void @llvm.objc.storeStrong(i8** %[[V2]], i8* null) 14void test1() { 15 constexpr NSString *S = @"abc"; 16} 17 18// CHECK-LABEL: define void @_Z5test2v 19// CHECK: %[[CONST:[a-zA-Z]+]] = alloca %[[TYPE]]* 20// CHECK: %[[REF_CONST:[a-zA-Z]+]] = alloca %[[TYPE]]* 21// CHECK: %[[V0:[0-9]+]] = call i8* @llvm.objc.retain(i8* bitcast (%struct.__NSConstantString_tag* @[[CFSTRING]] 22// CHECK-NEXT: %[[V1:[0-9]+]] = bitcast i8* %[[V0]] to %[[TYPE]]* 23// CHECK-NEXT: store %[[TYPE]]* %[[V1]], %[[TYPE]]** %[[CONST]] 24// CHECK: %[[V2:[0-9]+]] = call i8* @llvm.objc.retain(i8* bitcast (%struct.__NSConstantString_tag* @[[CFSTRING]] 25// CHECK-NEXT: %[[V3:[0-9]+]] = bitcast i8* %[[V2]] to %[[TYPE]]* 26// CHECK-NEXT: store %[[TYPE]]* %[[V3]], %[[TYPE]]** %[[REF_CONST]] 27// CHECK: %[[V4:[0-9]+]] = bitcast %[[TYPE]]** %[[REF_CONST]] 28// CHECK-NEXT: call void @llvm.objc.storeStrong(i8** %[[V4]], i8* null) 29// CHECK: %[[V5:[0-9]+]] = bitcast %[[TYPE]]** %[[CONST]] 30// CHECK-NEXT: call void @llvm.objc.storeStrong(i8** %[[V5]], i8* null) 31void test2() { 32 constexpr NSString *Const = @"abc"; 33 // In IR RefConst should be initialized with Const initializer instead of 34 // reading from variable. 35 NSString* RefConst = Const; 36} 37 38// CHECK-LABEL: define void @_Z5test3v 39// CHECK: %[[WEAK_CONST:[a-zA-Z]+]] = alloca %[[TYPE]]* 40// CHECK: %[[REF_WEAK_CONST:[a-zA-Z]+]] = alloca %[[TYPE]]* 41// CHECK: %[[V0:[0-9]+]] = bitcast %[[TYPE]]** %[[WEAK_CONST]] 42// CHECK-NEXT: %[[V1:[0-9]+]] = call i8* @llvm.objc.initWeak(i8** %[[V0]], i8* bitcast (%struct.__NSConstantString_tag* @[[CFSTRING]] 43// CHECK: store %[[TYPE]]* bitcast (%struct.__NSConstantString_tag* @[[CFSTRING]] to %[[TYPE]]*), %[[TYPE]]** %[[REF_WEAK_CONST]] 44// CHECK: %[[V2:[0-9]+]] = bitcast %[[TYPE]]** %[[REF_WEAK_CONST]] 45// CHECK-NEXT: call void @llvm.objc.storeStrong(i8** %[[V2]], i8* null) 46// CHECK: %[[V3:[0-9]+]] = bitcast %[[TYPE]]** %[[WEAK_CONST]] 47// CHECK-NEXT: call void @llvm.objc.destroyWeak(i8** %[[V3]]) 48void test3() { 49 __weak constexpr NSString *WeakConst = @"abc"; 50 NSString* RefWeakConst = WeakConst; 51} 52