23 lines
463 B
Rust
23 lines
463 B
Rust
|
// unit-test: DeadStoreElimination
|
||
|
|
|
||
|
|
#[inline(never)]
|
||
|
|
fn cond() -> bool {
|
||
|
|
false
|
||
|
|
}
|
||
|
|
|
||
|
|
// EMIT_MIR cycle.cycle.DeadStoreElimination.diff
|
||
|
|
fn cycle(mut x: i32, mut y: i32, mut z: i32) {
|
||
|
|
// This example is interesting because the non-transitive version of `MaybeLiveLocals` would
|
||
|
|
// report that *all* of these stores are live.
|
||
|
|
while cond() {
|
||
|
|
let temp = z;
|
||
|
|
z = y;
|
||
|
|
y = x;
|
||
|
|
x = temp;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
cycle(1, 2, 3);
|
||
|
|
}
|