rust/tests/mir-opt/uninhabited_fallthrough_elimination.rs

34 lines
568 B
Rust

// skip-filecheck
enum Empty {}
enum S {
A(Empty),
B,
C,
}
use S::*;
// EMIT_MIR uninhabited_fallthrough_elimination.keep_fallthrough.UnreachableEnumBranching.diff
fn keep_fallthrough(s: S) -> u32 {
match s {
A(_) => 1,
B => 2,
_ => 3,
}
}
// EMIT_MIR uninhabited_fallthrough_elimination.eliminate_fallthrough.UnreachableEnumBranching.diff
fn eliminate_fallthrough(s: S) -> u32 {
match s {
C => 1,
B => 2,
_ => 3,
}
}
fn main() {
keep_fallthrough(B);
eliminate_fallthrough(B);
}