[rustc.git] / src / test / mir-opt / matches_reduce_branches.rs

// compile-flags: -Zunsound-mir-opts
// EMIT_MIR_FOR_EACH_BIT_WIDTH
// EMIT_MIR matches_reduce_branches.foo.MatchBranchSimplification.diff
// EMIT_MIR matches_reduce_branches.bar.MatchBranchSimplification.diff

fn foo(bar: Option<()>) {
    if matches!(bar, None) {
      ()
    }
}

fn bar(i: i32) -> (bool, bool, bool, bool) {
    let a;
    let b;
    let c;
    let d;

    match i {
        7 => {
            a = false;
            b = true;
            c = false;
            d = true;
            ()
        }
        _ => {
            a = true;
            b = false;
            c = false;
            d = true;
            ()
        }
    };

    (a, b, c, d)
}


fn main() {
  let _ = foo(None);
  let _ = foo(Some(()));
  let _ = bar(0);
}
Commit	Line	Data
1b1a35ee	1	// compile-flags: -Zunsound-mir-opts
3dfed10e XL	2	// EMIT_MIR_FOR_EACH_BIT_WIDTH
	3	// EMIT_MIR matches_reduce_branches.foo.MatchBranchSimplification.diff
	4	// EMIT_MIR matches_reduce_branches.bar.MatchBranchSimplification.diff
	5
	6	fn foo(bar: Option<()>) {
	7	if matches!(bar, None) {
	8	()
	9	}
	10	}
	11
	12	fn bar(i: i32) -> (bool, bool, bool, bool) {
	13	let a;
	14	let b;
	15	let c;
	16	let d;
	17
	18	match i {
	19	7 => {
	20	a = false;
	21	b = true;
	22	c = false;
	23	d = true;
	24	()
	25	}
	26	_ => {
	27	a = true;
	28	b = false;
	29	c = false;
	30	d = true;
	31	()
	32	}
	33	};
	34
	35	(a, b, c, d)
	36	}
	37
	38
	39	fn main() {
	40	let _ = foo(None);
	41	let _ = foo(Some(()));
	42	let _ = bar(0);
	43	}