pub fn before(func: &Func) -> Vec<Inst> ⓘExpand description
Every instruction of a function, in the order they are in, which is what the allocator’s liveness is counted along while that is still the order.
Taken before the allocator rewrites the function, because afterwards the spills, the reloads and the edge moves are in among them and none of those is an instruction the liveness knows a point for.