aoc - heh


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#![allow(
    confusable_idents,
    uncommon_codepoints,
    non_upper_case_globals,
    internal_features,
    mixed_script_confusables,
    static_mut_refs,
    incomplete_features
)]
#![feature(
    iter_repeat_n,
    iter_partition_in_place,
    slice_swap_unchecked,
    generic_const_exprs,
    iter_array_chunks,
    if_let_guard,
    const_mut_refs,
    get_many_mut,
    maybe_uninit_uninit_array,
    once_cell_get_mut,
    iter_collect_into,
    hint_assert_unchecked,
    let_chains,
    anonymous_lifetime_in_impl_trait,
    array_windows,
    vec_into_raw_parts,
    try_blocks,
    slice_take,
    portable_simd,
    test,
    slice_as_chunks,
    array_chunks,
    slice_split_once,
    core_intrinsics
)]
extern crate test;
pub mod util;
use std::simd::prelude::*;

pub use util::prelude::*;
const SIZE: usize = 5;
const H: usize = 7;

#[no_mangle]
pub unsafe fn p1(x: &str) -> impl Display {
    let mut i = x.as_bytes().as_ptr();
    let mut keys = [0u64; 250];
    let mut ki = 0;
    let mut locks = [0u64; 250];
    let mut li = 0;
    for _ in 0..500 {
        let simd = u8x64::load_or_default(std::slice::from_raw_parts(i, 42));
        #[rustfmt::skip]
        let simd = simd_swizzle!(
            simd,
            [0, 1, 2, 3, 4, // 5
             6, 7, 8, 9, 10, // 11
             12, 13, 14, 15, 16, // 17
             18, 19, 20, 21, 22, // 23
             24, 25, 26, 27, 28, // 29
             30, 31, 32, 33, 34,
             0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
        );
        let acc = simd.simd_eq(Simd::splat(b'#')).to_bitmask();
        i = i.add(6 * 7 + 1);
        if acc & 1 == 0 {
            C! { keys[ki] = acc };
            ki += 1;
        } else {
            C! { locks[li] = acc };
            li += 1;
        }
    }
    let mut sum = 0;
    for &k in &keys {
        for &lock in &locks {
            if k & lock == 0 {
                sum += 1;
            }
        }
    }
    sum
}

fn main() {
    let s = include_str!("inp.txt");
    println!("{}", unsafe { p1(s) });

    // dbg!(exec(&program, regi));
}
#[bench]
fn benc(b: &mut test::Bencher) {
    let i = boxd(include_str!("inp.txt"));
    b.iter(|| unsafe { p1(i) });
}