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// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-arc -fobjc-runtime-has-weak -o - -std=c++11 %s | FileCheck %s
// CHECK: @[[CFSTRING:[a-z0-9_]+]] = private global %struct.__NSConstantString_tag
@class NSString;
// CHECK-LABEL: define{{.*}} void @_Z5test1v
// CHECK: %[[ALLOCA:[A-Z]+]] = alloca ptr
// CHECK: %[[V0:[0-9]+]] = call ptr @llvm.objc.retain(ptr @[[CFSTRING]]
// CHECK: store ptr %[[V0]], ptr %[[ALLOCA]]
// CHECK: call void @llvm.objc.storeStrong(ptr %[[ALLOCA]], ptr null)
void test1() {
constexpr NSString *S = @"abc";
}
// CHECK-LABEL: define{{.*}} void @_Z5test2v
// CHECK: %[[CONST:[a-zA-Z]+]] = alloca ptr
// CHECK: %[[REF_CONST:[a-zA-Z]+]] = alloca ptr
// CHECK: %[[V0:[0-9]+]] = call ptr @llvm.objc.retain(ptr @[[CFSTRING]]
// CHECK-NEXT: store ptr %[[V0]], ptr %[[CONST]]
// CHECK: %[[V2:[0-9]+]] = call ptr @llvm.objc.retain(ptr @[[CFSTRING]]
// CHECK-NEXT: store ptr %[[V2]], ptr %[[REF_CONST]]
// CHECK-NEXT: call void @llvm.objc.storeStrong(ptr %[[REF_CONST]], ptr null)
// CHECK-NEXT: call void @llvm.objc.storeStrong(ptr %[[CONST]], ptr null)
void test2() {
constexpr NSString *Const = @"abc";
// In IR RefConst should be initialized with Const initializer instead of
// reading from variable.
NSString* RefConst = Const;
}
// CHECK-LABEL: define{{.*}} void @_Z5test3v
// CHECK: %[[WEAK_CONST:[a-zA-Z]+]] = alloca ptr
// CHECK: %[[REF_WEAK_CONST:[a-zA-Z]+]] = alloca ptr
// CHECK-NEXT: %[[V1:[0-9]+]] = call ptr @llvm.objc.initWeak(ptr %[[WEAK_CONST]], ptr @[[CFSTRING]]
// CHECK: store ptr @[[CFSTRING]], ptr %[[REF_WEAK_CONST]]
// CHECK-NEXT: call void @llvm.objc.storeStrong(ptr %[[REF_WEAK_CONST]], ptr null)
// CHECK-NEXT: call void @llvm.objc.destroyWeak(ptr %[[WEAK_CONST]])
void test3() {
__weak constexpr NSString *WeakConst = @"abc";
NSString* RefWeakConst = WeakConst;
}
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