forked from OSchip/llvm-project
35 lines
1.3 KiB
C++
35 lines
1.3 KiB
C++
// RUN: %clang_cc1 -triple=i686-pc-win32 -fms-extensions %s -emit-llvm -o- | FileCheck %s
|
|
|
|
union A {
|
|
int *&ref;
|
|
int **ptr;
|
|
};
|
|
|
|
int *f1(A *a) {
|
|
return a->ref;
|
|
}
|
|
// CHECK-LABEL: define {{.*}}i32* @"?f1@@YAPAHPATA@@@Z"(%union.A* noundef %a)
|
|
// CHECK: [[REF:%[^[:space:]]+]] = bitcast %union.A* %{{.*}} to i32***
|
|
// CHECK: [[IPP:%[^[:space:]]+]] = load i32**, i32*** [[REF]]
|
|
// CHECK: [[IP:%[^[:space:]]+]] = load i32*, i32** [[IPP]]
|
|
// CHECK: ret i32* [[IP]]
|
|
|
|
void f2(A *a) {
|
|
*a->ref = 1;
|
|
}
|
|
// CHECK-LABEL: define {{.*}}void @"?f2@@YAXPATA@@@Z"(%union.A* noundef %a)
|
|
// CHECK: [[REF:%[^[:space:]]+]] = bitcast %union.A* %{{.*}} to i32***
|
|
// CHECK: [[IPP:%[^[:space:]]+]] = load i32**, i32*** [[REF]]
|
|
// CHECK: [[IP:%[^[:space:]]+]] = load i32*, i32** [[IPP]]
|
|
// CHECK: store i32 1, i32* [[IP]]
|
|
|
|
bool f3(A *a, int *b) {
|
|
return a->ref != b;
|
|
}
|
|
// CHECK-LABEL: define {{.*}}i1 @"?f3@@YA_NPATA@@PAH@Z"(%union.A* noundef %a, i32* noundef %b)
|
|
// CHECK: [[REF:%[^[:space:]]+]] = bitcast %union.A* %{{.*}} to i32***
|
|
// CHECK: [[IPP:%[^[:space:]]+]] = load i32**, i32*** [[REF]]
|
|
// CHECK: [[IP:%[^[:space:]]+]] = load i32*, i32** [[IPP]]
|
|
// CHECK: [[IP2:%[^[:space:]]+]] = load i32*, i32** %b.addr
|
|
// CHECK: icmp ne i32* [[IP]], [[IP2]]
|