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Enable AVX-VNNI 256-bit path for Q8_1 R8 dot product #1455

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Merged
ikawrakow merged 1 commit into from
Mar 18, 2026
+1 −1
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Enable AVX-VNNI 256-bit path for Q8_1 R8 dot product #1455

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2 changes: 1 addition & 1 deletion ggml/src/iqk/iqk_gemm_legacy_quants.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1751,7 +1751,7 @@ static void mul_mat_q8_1_r8_q8_2(int n, const void * vx, size_t bx, const DataIn
auto dot = [&qx] (const int8_t * qy) {
auto y128 = _mm_loadu_si128((const __m128i*)qy);
auto y = MM256_SET_M128I(y128, y128);
#ifdef HAVE_FANCY_SIMD
#ifdef HAVE_VNNI256
auto sumi = _mm256_setzero_si256();
sumi = _mm256_dpbusd_epi32(sumi, qx[0], _mm256_shuffle_epi32(y, 0x00));
sumi = _mm256_dpbusd_epi32(sumi, qx[1], _mm256_shuffle_epi32(y, 0x55));
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