bendn/fimg
1
0
Fork 0
mirror of https://github.com/bend-n/fimg.git synced 2024-12-22 02:28:19 -06:00
Code Issues Actions Packages Projects Releases Wiki Activity

fix b64 for 32 bit

Browse source
This commit is contained in:
bendn 2024-11-29 08:01:08 +07:00
parent 4082ca3dda
commit 273058dcef
No known key found for this signature in database
GPG key ID: 0D9D3A2A3B2A93D6
1 changed files with 11 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

19
src/term/b64.rs
View file

@ -1,7 +1,8 @@
#![allow(clippy::undocumented_unsafe_blocks)]
use core::intrinsics::simd::simd_cast;
#[cfg(all(target_feature = "avx2", not(miri)))]
use std::arch::x86_64::*;
use std::{
arch::x86_64::*,
intrinsics::transmute_unchecked,
simd::{prelude::*, LaneCount, MaskElement, SimdElement, SupportedLaneCount},
};
@ -57,7 +58,8 @@ type c = u8x32;
unsafe fn portable(mut input: &[u8], mut output: *mut u8) {
while input.len() >= 32 {
#[allow(unsafe_op_in_unsafe_fn)]
let indices = if cfg!(all(target_feature = "avx2", not(miri))) {
#[cfg(all(target_feature = "avx2", not(miri)))]
let indices = {
let lo = _mm_loadu_si128(input.as_ptr() as *const __m128i);
let hi = _mm_loadu_si128(input.as_ptr().add(12) as *const __m128i);
let i = _mm256_shuffle_epi8(
@ -73,7 +75,9 @@ unsafe fn portable(mut input: &[u8], mut output: *mut u8) {
let t3 = _mm256_mullo_epi16(t2, _mm256_set1_epi32(0x01000010));
c::from(_mm256_or_si256(t1, t3))
} else {
};
#[cfg(not(all(target_feature = "avx2", not(miri))))]
let indices = {
let v = c::from_slice(input);
let i = simd_swizzle!(
v,
@ -125,11 +129,10 @@ fn lookup(x: c) -> c {
b'0' as i8 - 52, b'0' as i8 - 52, b'0' as i8 - 52, b'0' as i8 - 52, b'0' as i8 - 52, b'+' as i8 - 62,
b'/' as i8 - 63, b'A' as i8, 0, 0
]);
let result = if cfg!(all(target_feature = "avx2", not(miri))) {
unsafe { i8x32::from(_mm256_shuffle_epi8(LUT.into(), result.into())) }
} else {
(LUT.cas::<c>().swizzle_dyn(result)).cas::<i8x32>()
};
#[cfg(all(target_feature = "avx2", not(miri)))]
let result = unsafe { i8x32::from(_mm256_shuffle_epi8(LUT.into(), result.into())) };
#[cfg(not(all(target_feature = "avx2", not(miri))))]
let result = (LUT.cas::<c>().swizzle_dyn(result)).cas::<i8x32>();
Cast::cas(result + x.cas::<i8x32>())
}