| // MIR for `mapped` after PreCodegen |
| |
| fn mapped(_1: impl Iterator<Item = T>, _2: impl Fn(T) -> U) -> () { |
| debug iter => _1; |
| debug f => _2; |
| let mut _0: (); |
| let mut _3: std::iter::Map<impl Iterator<Item = T>, impl Fn(T) -> U>; |
| let mut _4: std::iter::Map<impl Iterator<Item = T>, impl Fn(T) -> U>; |
| let mut _5: &mut std::iter::Map<impl Iterator<Item = T>, impl Fn(T) -> U>; |
| let mut _6: std::option::Option<U>; |
| let mut _7: isize; |
| let _9: (); |
| scope 1 { |
| debug iter => _4; |
| let _8: U; |
| scope 2 { |
| debug x => _8; |
| } |
| } |
| scope 3 (inlined <Map<impl Iterator<Item = T>, impl Fn(T) -> U> as IntoIterator>::into_iter) { |
| debug self => _3; |
| } |
| |
| bb0: { |
| _3 = <impl Iterator<Item = T> as Iterator>::map::<U, impl Fn(T) -> U>(move _1, move _2) -> [return: bb1, unwind continue]; |
| } |
| |
| bb1: { |
| StorageLive(_4); |
| _4 = _3; |
| goto -> bb2; |
| } |
| |
| bb2: { |
| StorageLive(_6); |
| StorageLive(_5); |
| _5 = &mut _4; |
| _6 = <Map<impl Iterator<Item = T>, impl Fn(T) -> U> as Iterator>::next(move _5) -> [return: bb3, unwind: bb9]; |
| } |
| |
| bb3: { |
| StorageDead(_5); |
| _7 = discriminant(_6); |
| switchInt(move _7) -> [0: bb4, 1: bb6, otherwise: bb8]; |
| } |
| |
| bb4: { |
| StorageDead(_6); |
| drop(_4) -> [return: bb5, unwind continue]; |
| } |
| |
| bb5: { |
| StorageDead(_4); |
| return; |
| } |
| |
| bb6: { |
| _8 = move ((_6 as Some).0: U); |
| _9 = opaque::<U>(move _8) -> [return: bb7, unwind: bb9]; |
| } |
| |
| bb7: { |
| StorageDead(_6); |
| goto -> bb2; |
| } |
| |
| bb8: { |
| unreachable; |
| } |
| |
| bb9 (cleanup): { |
| drop(_4) -> [return: bb10, unwind terminate(cleanup)]; |
| } |
| |
| bb10 (cleanup): { |
| resume; |
| } |
| } |