rust/tests/mir-opt/gvn.wrap_unwrap.GVN.panic-unwind.diff
2023-10-25 06:46:47 +00:00

50 lines
1.1 KiB
Diff

- // MIR for `wrap_unwrap` before GVN
+ // MIR for `wrap_unwrap` after GVN
fn wrap_unwrap(_1: T) -> T {
debug x => _1;
let mut _0: T;
let mut _2: std::option::Option<T>;
let mut _3: T;
let mut _4: isize;
let _5: T;
let mut _6: !;
scope 1 {
debug y => _5;
}
bb0: {
StorageLive(_2);
StorageLive(_3);
_3 = _1;
- _2 = Option::<T>::Some(move _3);
+ _2 = Option::<T>::Some(_1);
StorageDead(_3);
- _4 = discriminant(_2);
- switchInt(move _4) -> [0: bb1, 1: bb3, otherwise: bb2];
+ _4 = const 1_isize;
+ switchInt(const 1_isize) -> [0: bb1, 1: bb3, otherwise: bb2];
}
bb1: {
StorageLive(_6);
_6 = begin_panic::<&str>(const "explicit panic") -> unwind continue;
}
bb2: {
unreachable;
}
bb3: {
StorageLive(_5);
- _5 = ((_2 as Some).0: T);
- _0 = _5;
+ _5 = _1;
+ _0 = _1;
StorageDead(_5);
StorageDead(_2);
return;
}
}