rust/tests/mir-opt/copy-prop/cycle.rs

18 lines
320 B
Rust

// skip-filecheck
// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
//! Tests that cyclic assignments don't hang CopyProp, and result in reasonable code.
//@ unit-test: CopyProp
fn val() -> i32 {
1
}
// EMIT_MIR cycle.main.CopyProp.diff
fn main() {
let mut x = val();
let y = x;
let z = y;
x = z;
drop(x);
}