| // RUN: %clang_cc1 -fms-compatibility -triple x86_64-windows-msvc %s -emit-llvm -o - | FileCheck %s |
| |
| // Make sure we choose the *direct* base path when doing these conversions. |
| |
| struct A { int a; }; |
| struct B : A { int b; }; |
| |
| struct C : A, B { }; |
| extern "C" A *a_from_c(C *p) { return p; } |
| // CHECK-LABEL: define dso_local ptr @a_from_c(ptr noundef %{{.*}}) |
| // CHECK: [[P_ADDR:%.*]] = alloca ptr |
| // CHECK-NEXT: store ptr [[P:%.*]], ptr [[P_ADDR]] |
| // CHECK-NEXT: [[RET:%.*]] = load ptr, ptr [[P_ADDR]] |
| // CHECK-NEXT: ret ptr [[RET]] |
| |
| struct D : B, A { }; |
| extern "C" A *a_from_d(D *p) { return p; } |
| // CHECK-LABEL: define dso_local ptr @a_from_d(ptr noundef %{{.*}}) |
| // CHECK: [[P_ADDR:%.*]] = alloca ptr |
| // CHECK-NEXT: store ptr [[P:%.*]], ptr [[P_ADDR]] |
| // CHECK-NEXT: [[P_RELOAD:%.*]] = load ptr, ptr [[P_ADDR]] |
| // CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[P_RELOAD]], null |
| // CHECK: [[ADD_PTR:%.*]] = getelementptr inbounds i8, ptr [[P_RELOAD]], i64 8 |
| // CHECK: [[RET:%.*]] = phi ptr [ [[ADD_PTR]], {{.*}} ], [ null, %entry ] |
| // CHECK-NEXT: ret ptr [[RET]] |
