| // skip-filecheck | |
| // EMIT_MIR_FOR_EACH_PANIC_STRATEGY | |
| // This is a copy of the `dead_stores_79191` test, except that we turn on DSE. This demonstrates | |
| // that that pass enables this one to do more optimizations. | |
| //@ unit-test: DestinationPropagation | |
| //@ compile-flags: -Zmir-enable-passes=+DeadStoreElimination | |
| fn id<T>(x: T) -> T { | |
| x | |
| } | |
| // EMIT_MIR dead_stores_better.f.DestinationPropagation.after.mir | |
| pub fn f(mut a: usize) -> usize { | |
| let b = a; | |
| a = 5; | |
| a = b; | |
| id(a) | |
| } | |
| fn main() { | |
| f(0); | |
| } |