| // Check that niche selection prefers zero and that jumps are optimized away. | |
| // See https://github.com/rust-lang/rust/pull/87794 | |
| //@ assembly-output: emit-asm | |
| //@ only-x86 | |
| //@ compile-flags: -Copt-level=3 | |
| #![crate_type = "lib"] | |
| #[repr(u8)] | |
| pub enum Size { | |
| One = 1, | |
| Two = 2, | |
| Three = 3, | |
| } | |
| #[no_mangle] | |
| pub fn handle(x: Option<Size>) -> u8 { | |
| match x { | |
| None => 0, | |
| Some(size) => size as u8, | |
| } | |
| } | |
| // There should be no jumps in output | |
| // CHECK-NOT: j |