Is there a stable way to use likely/unlikely on branch prediction?

[anon80458984]

Compiler hint for unlikely/likely for if branches

Here is how hashbrown does to implement likely and unlikely on stable: #[inline] #[cold] fn cold() {} #[inline] fn likely(b: bool) -> bool { if !b { cold() } b } #[inline] fn unlikely(b: bool) -> bool { if b { cold() } b }