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// RUN: %clang_cc1 -std=c++11 -S -emit-llvm -o - %s | FileCheck %s
namespace reference {
struct A {
int i1, i2;
};
void single_init() {
// No superfluous instructions allowed here, they could be
// hiding extra temporaries.
// CHECK: store i32 1, i32*
// CHECK-NEXT: store i32* %{{.*}}, i32**
const int &cri2a = 1;
// CHECK-NEXT: store i32 1, i32*
// CHECK-NEXT: store i32* %{{.*}}, i32**
const int &cri1a = {1};
// CHECK-NEXT: store i32 1, i32*
int i = 1;
// CHECK-NEXT: store i32* %{{.*}}, i32**
int &ri1a = {i};
// CHECK-NEXT: bitcast
// CHECK-NEXT: memcpy
A a{1, 2};
// CHECK-NEXT: store %{{.*}}* %{{.*}}, %{{.*}}** %
A &ra1a = {a};
// CHECK-NEXT: ret
}
void reference_to_aggregate() {
// CHECK: getelementptr {{.*}}, i32 0, i32 0
// CHECK-NEXT: store i32 1
// CHECK-NEXT: getelementptr {{.*}}, i32 0, i32 1
// CHECK-NEXT: store i32 2
// CHECK-NEXT: store %{{.*}}* %{{.*}}, %{{.*}}** %{{.*}}, align
const A &ra1{1, 2};
// CHECK-NEXT: getelementptr inbounds [3 x i32]* %{{.*}}, i{{32|64}} 0, i{{32|64}} 0
// CHECK-NEXT: store i32 1
// CHECK-NEXT: getelementptr inbounds i32* %{{.*}}, i{{32|64}} 1
// CHECK-NEXT: store i32 2
// CHECK-NEXT: getelementptr inbounds i32* %{{.*}}, i{{32|64}} 1
// CHECK-NEXT: store i32 3
// CHECK-NEXT: store [3 x i32]* %{{.*}}, [3 x i32]** %{{.*}}, align
const int (&arrayRef)[] = {1, 2, 3};
// CHECK-NEXT: ret
}
struct B {
B();
~B();
};
void single_init_temp_cleanup()
{
// Ensure lifetime extension.
// CHECK: call void @_ZN9reference1BC1Ev
// CHECK-NEXT: store %{{.*}}* %{{.*}}, %{{.*}}** %
const B &rb{ B() };
// CHECK: call void @_ZN9reference1BD1Ev
}
}
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