rust/tests/codegen/enum/enum-bounds-check-derived-i...

25 lines
519 B
Rust

// This test checks an optimization that is not guaranteed to work. This test case should not block
// a future LLVM update.
//@ compile-flags: -O
#![crate_type = "lib"]
pub enum Bar {
A = 1,
B = 3,
}
// CHECK-LABEL: @lookup_inc
#[no_mangle]
pub fn lookup_inc(buf: &[u8; 5], f: Bar) -> u8 {
// CHECK-NOT: panic_bounds_check
buf[f as usize + 1]
}
// CHECK-LABEL: @lookup_dec
#[no_mangle]
pub fn lookup_dec(buf: &[u8; 5], f: Bar) -> u8 {
// CHECK-NOT: panic_bounds_check
buf[f as usize - 1]
}