rust/tests/codegen/enum/enum-bounds-check-issue-828...

19 lines
478 B
Rust

//@ compile-flags: -C opt-level=0
#![crate_type = "lib"]
#[repr(C)]
pub enum E {
A,
}
// CHECK-LABEL: @index
#[no_mangle]
pub fn index(x: &[u32; 3], ind: E) -> u32 {
// Canary: we should be able to optimize out the bounds check, but we need
// to track the range of the discriminant result in order to be able to do that.
// oli-obk tried to add that, but that caused miscompilations all over the place.
// CHECK: panic_bounds_check
x[ind as usize]
}