rust/tests/mir-opt/unreachable.as_match.UnreachablePropagation.panic-abort.diff

46 lines
960 B
Diff

- // MIR for `as_match` before UnreachablePropagation
+ // MIR for `as_match` after UnreachablePropagation
fn as_match() -> () {
let mut _0: ();
let mut _1: std::option::Option<Empty>;
let mut _2: isize;
let _3: Empty;
let mut _4: !;
+ let mut _5: bool;
scope 1 {
debug _x => _3;
}
bb0: {
StorageLive(_1);
_1 = empty() -> [return: bb1, unwind unreachable];
}
bb1: {
_2 = discriminant(_1);
- switchInt(move _2) -> [0: bb4, 1: bb2, otherwise: bb3];
+ _5 = Eq(_2, const 0_isize);
+ assume(move _5);
+ goto -> bb4;
}
bb2: {
- StorageLive(_3);
- _3 = move ((_1 as Some).0: Empty);
- StorageLive(_4);
unreachable;
}
bb3: {
unreachable;
}
bb4: {
_0 = const ();
StorageDead(_1);
return;
}
}