// MIR for `a` after Inline

fn a(_1: &mut [T]) -> &mut [T] {
    debug x => _1;
    let mut _0: &mut [T];
    let mut _2: &mut [T];
    let mut _3: &mut [T];
    let mut _4: &mut [T];
    scope 1 (inlined <[T] as AsMut<[T]>>::as_mut) {
        debug self => _4;
    }

    bb0: {
        StorageLive(_2);
        StorageLive(_3);
        StorageLive(_4);
        _4 = copy _1;
        _3 = copy _4;
        _2 = copy _3;
        StorageDead(_4);
        _0 = copy _2;
        StorageDead(_3);
        StorageDead(_2);
        return;
    }
}