- // MIR for `main` before ConstProp + // MIR for `main` after ConstProp fn main() -> () { let mut _0: (); let mut _1: u8; let mut _2: u8; let mut _3: u8; scope 1 { } scope 2 (inlined ::add) { debug self => _2; debug other => _3; let mut _4: (u8, bool); } bb0: { StorageLive(_1); StorageLive(_2); _2 = const u8::MAX; StorageLive(_3); _3 = const 1_u8; - _4 = CheckedAdd(_2, _3); - assert(!move (_4.1: bool), "attempt to compute `{} + {}`, which would overflow", _2, _3) -> bb1; + _4 = const (0_u8, true); + assert(!const true, "attempt to compute `{} + {}`, which would overflow", _2, _3) -> bb1; } bb1: { - _1 = move (_4.0: u8); + _1 = const 0_u8; StorageDead(_3); StorageDead(_2); StorageDead(_1); _0 = const (); return; } }