| // 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 {{.*}}ptr @"?f1@@YAPAHPATA@@@Z"(ptr noundef %a) |
| // CHECK: [[A_ADDR:%[^[:space:]]+]] = load ptr, ptr %{{.*}} |
| // CHECK: [[IPP:%[^[:space:]]+]] = load ptr, ptr [[A_ADDR]] |
| // CHECK: [[IP:%[^[:space:]]+]] = load ptr, ptr [[IPP]] |
| // CHECK: ret ptr [[IP]] |
| |
| void f2(A *a) { |
| *a->ref = 1; |
| } |
| // CHECK-LABEL: define {{.*}}void @"?f2@@YAXPATA@@@Z"(ptr noundef %a) |
| // CHECK: [[A_ADDR:%[^[:space:]]+]] = load ptr, ptr %{{.*}} |
| // CHECK: [[IPP:%[^[:space:]]+]] = load ptr, ptr [[A_ADDR]] |
| // CHECK: [[IP:%[^[:space:]]+]] = load ptr, ptr [[IPP]] |
| // CHECK: store i32 1, ptr [[IP]] |
| |
| bool f3(A *a, int *b) { |
| return a->ref != b; |
| } |
| // CHECK-LABEL: define {{.*}}i1 @"?f3@@YA_NPATA@@PAH@Z"(ptr noundef %a, ptr noundef %b) |
| // CHECK: [[A_ADDR:%[^[:space:]]+]] = load ptr, ptr %{{.*}} |
| // CHECK: [[IPP:%[^[:space:]]+]] = load ptr, ptr [[A_ADDR]] |
| // CHECK: [[IP:%[^[:space:]]+]] = load ptr, ptr [[IPP]] |
| // CHECK: [[IP2:%[^[:space:]]+]] = load ptr, ptr %b.addr |
| // CHECK: icmp ne ptr [[IP]], [[IP2]] |
