1 // RUN: %clang -mfloat-abi=soft -target arm-linux-gnu -emit-llvm -S -o - %s | FileCheck %s
2
3 struct Empty {};
4
5 struct Empty emptyvar;
6
take_args(int a,...)7 void take_args(int a, ...) {
8 // CHECK: [[ALLOCA_VA_LIST:%[a-zA-Z0-9._]+]] = alloca %struct.__va_list, align 4
9 // CHECK: call void @llvm.va_start
10
11 // It's conceivable that EMPTY_PTR may not actually be a valid pointer
12 // (e.g. it's at the very bottom of the stack and the next page is
13 // invalid). This doesn't matter provided it's never loaded (there's no
14 // well-defined way to tell), but it becomes a problem if we do try to use it.
15 // CHECK-NOT: load %struct.Empty
16 __builtin_va_list l;
17 __builtin_va_start(l, a);
18 emptyvar = __builtin_va_arg(l, struct Empty);
19 __builtin_va_end(l);
20 }
21