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Tweak names of wasm SIMD intrinsics (#1096)

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Alex Crichton 2021-03-25 10:11:30 -05:00 • committed by GitHub
parent 770ced9a69
commit 3bbb381ac1
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2 changed files with 773 additions and 590 deletions
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1349
library/stdarch/crates/core_arch/src/wasm32/simd128.rs
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14
library/stdarch/examples/hex.rs
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@ -159,21 +159,21 @@ unsafe fn hex_encode_sse41<'a>(mut src: &[u8], dst: &'a mut [u8]) -> Result<&'a
unsafe fn hex_encode_simd128<'a>(mut src: &[u8], dst: &'a mut [u8]) -> Result<&'a str, usize> {
use core_arch::arch::wasm32::*;
let ascii_zero = i8x16_splat(b'0' as i8);
let nines = i8x16_splat(9);
let ascii_a = i8x16_splat((b'a' - 9 - 1) as i8);
let and4bits = i8x16_splat(0xf);
let ascii_zero = u8x16_splat(b'0');
let nines = u8x16_splat(9);
let ascii_a = u8x16_splat(b'a' - 9 - 1);
let and4bits = u8x16_splat(0xf);
let mut i = 0_isize;
while src.len() >= 16 {
let invec = v128_load(src.as_ptr() as *const _);
let masked1 = v128_and(invec, and4bits);
let masked2 = v128_and(i8x16_shr_u(invec, 4), and4bits);
let masked2 = v128_and(u8x16_shr(invec, 4), and4bits);
// return 0xff corresponding to the elements > 9, or 0x00 otherwise
let cmpmask1 = i8x16_gt_u(masked1, nines);
let cmpmask2 = i8x16_gt_u(masked2, nines);
let cmpmask1 = u8x16_gt(masked1, nines);
let cmpmask2 = u8x16_gt(masked2, nines);
// add '0' or the offset depending on the masks
let masked1 = i8x16_add(masked1, v128_bitselect(ascii_a, ascii_zero, cmpmask1));