| // RUN: %clang -mfloat-abi=soft -target arm-linux-gnu -emit-llvm -S -o - %s | FileCheck %s |
| |
| struct Empty {}; |
| |
| struct Empty emptyvar; |
| |
| void take_args(int a, ...) { |
| // CHECK: [[ALLOCA_VA_LIST:%[a-zA-Z0-9._]+]] = alloca %struct.__va_list, align 4 |
| // CHECK: call void @llvm.va_start |
| |
| // It's conceivable that EMPTY_PTR may not actually be a valid pointer |
| // (e.g. it's at the very bottom of the stack and the next page is |
| // invalid). This doesn't matter provided it's never loaded (there's no |
| // well-defined way to tell), but it becomes a problem if we do try to use it. |
| // CHECK-NOT: load %struct.Empty |
| __builtin_va_list l; |
| __builtin_va_start(l, a); |
| emptyvar = __builtin_va_arg(l, struct Empty); |
| __builtin_va_end(l); |
| } |
