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