зеркало из https://github.com/microsoft/clang-1.git
74 строки
1.8 KiB
C++
74 строки
1.8 KiB
C++
// 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};
|
|
|
|
using T = A&;
|
|
// CHECK-NEXT: store %{{.*}}* %{{.*}}, %{{.*}}** %
|
|
A &ra1b = T{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
|
|
}
|
|
|
|
}
|