Use RNDNU requantization in QS8 VADD[C] microkernels
Rounding midpoints up (RNDNU) is more efficient than previously used RNDNA
(rounding midpoints away from zero) requantization
PiperOrigin-RevId: 385867165
diff --git a/src/qs8-vaddc/gen/minmax-avx-mul16-ld64-x16.c b/src/qs8-vaddc/gen/minmax-avx-mul16-ld64-x16.c
index c8bd2bf..4d619dd 100644
--- a/src/qs8-vaddc/gen/minmax-avx-mul16-ld64-x16.c
+++ b/src/qs8-vaddc/gen/minmax-avx-mul16-ld64-x16.c
@@ -54,19 +54,10 @@
__m128i vacc89AB = _mm_add_epi32(vbias, _mm_unpacklo_epi16(vaprod89ABCDEFlo, vaprod89ABCDEFhi));
__m128i vaccCDEF = _mm_add_epi32(vbias, _mm_unpackhi_epi16(vaprod89ABCDEFlo, vaprod89ABCDEFhi));
- const __m128i vadj0123 = _mm_srai_epi32(vacc0123, 31);
- vacc0123 = _mm_add_epi32(vacc0123, vrounding);
- const __m128i vadj4567 = _mm_srai_epi32(vacc4567, 31);
- vacc4567 = _mm_add_epi32(vacc4567, vrounding);
- const __m128i vadj89AB = _mm_srai_epi32(vacc89AB, 31);
- vacc89AB = _mm_add_epi32(vacc89AB, vrounding);
- const __m128i vadjCDEF = _mm_srai_epi32(vaccCDEF, 31);
- vaccCDEF = _mm_add_epi32(vaccCDEF, vrounding);
-
- vacc0123 = _mm_sra_epi32(_mm_add_epi32(vacc0123, vadj0123), vshift);
- vacc4567 = _mm_sra_epi32(_mm_add_epi32(vacc4567, vadj4567), vshift);
- vacc89AB = _mm_sra_epi32(_mm_add_epi32(vacc89AB, vadj89AB), vshift);
- vaccCDEF = _mm_sra_epi32(_mm_add_epi32(vaccCDEF, vadjCDEF), vshift);
+ vacc0123 = _mm_sra_epi32(_mm_add_epi32(vacc0123, vrounding), vshift);
+ vacc4567 = _mm_sra_epi32(_mm_add_epi32(vacc4567, vrounding), vshift);
+ vacc89AB = _mm_sra_epi32(_mm_add_epi32(vacc89AB, vrounding), vshift);
+ vaccCDEF = _mm_sra_epi32(_mm_add_epi32(vaccCDEF, vrounding), vshift);
__m128i vout01234567 = _mm_adds_epi16(_mm_packs_epi32(vacc0123, vacc4567), voutput_zero_point);
__m128i vout89ABCDEF = _mm_adds_epi16(_mm_packs_epi32(vacc89AB, vaccCDEF), voutput_zero_point);
@@ -98,13 +89,8 @@
__m128i vacc0123 = _mm_add_epi32(vbias, _mm_unpacklo_epi16(vaprod01234567lo, vaprod01234567hi));
__m128i vacc4567 = _mm_add_epi32(vbias, _mm_unpackhi_epi16(vaprod01234567lo, vaprod01234567hi));
- const __m128i vadj0123 = _mm_srai_epi32(vacc0123, 31);
- const __m128i vadj4567 = _mm_srai_epi32(vacc4567, 31);
- vacc0123 = _mm_add_epi32(vacc0123, vrounding);
- vacc4567 = _mm_add_epi32(vacc4567, vrounding);
-
- vacc0123 = _mm_sra_epi32(_mm_add_epi32(vacc0123, vadj0123), vshift);
- vacc4567 = _mm_sra_epi32(_mm_add_epi32(vacc4567, vadj4567), vshift);
+ vacc0123 = _mm_sra_epi32(_mm_add_epi32(vacc0123, vrounding), vshift);
+ vacc4567 = _mm_sra_epi32(_mm_add_epi32(vacc4567, vrounding), vshift);
__m128i vout01234567 = _mm_adds_epi16(_mm_packs_epi32(vacc0123, vacc4567), voutput_zero_point);
vout01234567 = _mm_max_epi16(vout01234567, voutput_min);