github_mirrors/vectorscan
3
0
Fork 1
mirror of https://github.com/VectorCamp/vectorscan.git synced 2025-06-28 16:41:01 +03:00
Code Issues Packages Projects Releases Wiki Activity

[VSX] optimize and correct lshift_m128/rshift_m128

Browse Source
This commit is contained in:
Konstantinos Margaritis 2022-09-06 18:46:39 +03:00
parent 026f761671
commit 0e7874f122
1 changed files with 8 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
src/util/arch/ppc64el/simd_utils.h
View File

@ -114,46 +114,18 @@ m128 sub_2x64(m128 a, m128 b) {
static really_really_inline
m128 lshift_m128(m128 a, unsigned b) {
switch(b){
case 1: return vec_sld(a, zeroes128(), 1); break;
case 2: return vec_sld(a, zeroes128(), 2); break;
case 3: return vec_sld(a, zeroes128(), 3); break;
case 4: return vec_sld(a, zeroes128(), 4); break;
case 5: return vec_sld(a, zeroes128(), 5); break;
case 6: return vec_sld(a, zeroes128(), 6); break;
case 7: return vec_sld(a, zeroes128(), 7); break;
case 8: return vec_sld(a, zeroes128(), 8); break;
case 9: return vec_sld(a, zeroes128(), 9); break;
case 10: return vec_sld(a, zeroes128(), 10); break;
case 11: return vec_sld(a, zeroes128(), 11); break;
case 12: return vec_sld(a, zeroes128(), 12); break;
case 13: return vec_sld(a, zeroes128(), 13); break;
case 14: return vec_sld(a, zeroes128(), 14); break;
case 15: return vec_sld(a, zeroes128(), 15); break;
}
return a;
if (b == 0) return a;
m128 sl = (m128) vec_splats((uint8_t) b << 3);
m128 result = (m128) vec_slo((uint8x16_t) a, (uint8x16_t) sl);
return result;
}
static really_really_inline
m128 rshift_m128(m128 a, unsigned b) {
switch(b){
case 1: return vec_sld(zeroes128(), a, 15); break;
case 2: return vec_sld(zeroes128(), a, 14); break;
case 3: return vec_sld(zeroes128(), a, 13); break;
case 4: return vec_sld(zeroes128(), a, 12); break;
case 5: return vec_sld(zeroes128(), a, 11); break;
case 6: return vec_sld(zeroes128(), a, 10); break;
case 7: return vec_sld(zeroes128(), a, 9); break;
case 8: return vec_sld(zeroes128(), a, 8); break;
case 9: return vec_sld(zeroes128(), a, 7); break;
case 10: return vec_sld(zeroes128(), a, 6); break;
case 11: return vec_sld(zeroes128(), a, 5); break;
case 12: return vec_sld(zeroes128(), a, 4); break;
case 13: return vec_sld(zeroes128(), a, 3); break;
case 14: return vec_sld(zeroes128(), a, 2); break;
case 15: return vec_sld(zeroes128(), a, 1); break;
}
return a;
if (b == 0) return a;
m128 sl = (m128) vec_splats((uint8_t) b << 3);
m128 result = (m128) vec_sro((uint8x16_t) a, (uint8x16_t) sl);
return result;
}
static really_really_inline