- // MIR for `array_bound` before GVN + // MIR for `array_bound` after GVN fn array_bound(_1: usize, _2: &[u8; N]) -> u8 { debug index => _1; debug slice => _2; let mut _0: u8; let mut _3: bool; let mut _4: usize; let mut _5: usize; let mut _6: &[u8]; let mut _7: &[u8; N]; let _8: usize; let mut _9: usize; let mut _10: bool; bb0: { - StorageLive(_3); + nop; StorageLive(_4); _4 = _1; - StorageLive(_5); + nop; StorageLive(_6); StorageLive(_7); _7 = &(*_2); _6 = move _7 as &[u8] (PointerCoercion(Unsize)); StorageDead(_7); - _5 = PtrMetadata(move _6); + _5 = const N; goto -> bb1; } bb1: { StorageDead(_6); - _3 = Lt(move _4, move _5); - switchInt(move _3) -> [0: bb4, otherwise: bb2]; + _3 = Lt(_1, const N); + switchInt(_3) -> [0: bb4, otherwise: bb2]; } bb2: { - StorageDead(_5); + nop; StorageDead(_4); StorageLive(_8); _8 = _1; - _9 = Len((*_2)); - _10 = Lt(_8, _9); - assert(move _10, "index out of bounds: the length is {} but the index is {}", move _9, _8) -> [success: bb3, unwind unreachable]; + _9 = const N; + _10 = _3; + assert(_3, "index out of bounds: the length is {} but the index is {}", const N, _1) -> [success: bb3, unwind unreachable]; } bb3: { - _0 = (*_2)[_8]; + _0 = (*_2)[_1]; StorageDead(_8); goto -> bb5; } bb4: { - StorageDead(_5); + nop; StorageDead(_4); _0 = const 42_u8; goto -> bb5; } bb5: { - StorageDead(_3); + nop; return; } }