Function rustc_mir::transform::simplify::make_local_map[][src]

Important traits for Vec<u8>
fn make_local_map<'tcx, I: Idx, V>(
    vec: &mut IndexVec<I, V>,
    mask: BitVector
) -> Vec<usize>
🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Construct the mapping while swapping out unused stuff out from the vec.