It can. -Z unstable-options -Zunpretty=hir,typed // source pub fn square(num: i32) -> i32 { num * num } // expanded use ::std::pr

It can. -Z unstable-options -Zunpretty=hir,typed // source pub fn square(num: i32) -> i32 { num * num } // expanded use ::std::prelude::v1::*; extern crate std; pub fn square(num: i32) -> i32 ({ ((num as i32) * (num as i32) as i32) } as i32) You can try on https://rust.godbolt.org/ https://rust.godbolt.org/