heh
Diffstat (limited to 'src/main.rs')
| -rw-r--r-- | src/main.rs | 45 |
1 files changed, 18 insertions, 27 deletions
diff --git a/src/main.rs b/src/main.rs index 66ca4b3..fbd910c 100644 --- a/src/main.rs +++ b/src/main.rs @@ -9,6 +9,7 @@ )] #![feature( iter_repeat_n, + stdarch_x86_avx512, iter_partition_in_place, slice_swap_unchecked, generic_const_exprs, @@ -38,31 +39,21 @@ 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 i = x.as_bytes().as_ptr(); + static mut keys: [u32; 256] = [u32::MAX; 256]; let mut ki = 0; - let mut locks = [0u64; 250]; + static mut locks: [u32; 250] = [u32::MAX; 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); + for j in 0..500 { + let acc = i + .add(j * (7 * 6 + 1) + 3) + .cast::<u8x32>() + .read_unaligned() + .simd_eq(Simd::splat(b'#')) + .to_bitmask() as u32; if acc & 1 == 0 { C! { keys[ki] = acc }; ki += 1; @@ -71,15 +62,15 @@ pub unsafe fn p1(x: &str) -> impl Display { li += 1; } } - let mut sum = 0; - for &k in &keys { - for &lock in &locks { - if k & lock == 0 { - sum += 1; - } + let mut sum = i32x8::splat(0); + for &lock in &locks { + for &k in keys.as_chunks_unchecked::<8>() { + sum += (u32x8::splat(lock) & u32x8::from_array(k)) + .simd_eq(Simd::splat(0)) + .to_int(); } } - sum + -sum.reduce_sum() as u32 } fn main() { |