- // MIR for `unreachable_ref` before DataflowConstProp + // MIR for `unreachable_ref` after DataflowConstProp fn unreachable_ref() -> ! { let mut _0: !; let _1: &Never; scope 1 { debug x => _1; } bb0: { StorageLive(_1); - _1 = const 1_usize as &Never (Transmute); + _1 = const {0x1 as &Never}; unreachable; } }