Actions described in.

PHADDW __m64 _mm_hadd_pi16 (__m64 a, __m64 b) PMULHW __m128i _mm_mulhi_epi16(__m128i m1, __m128i m2); VPACKSSWB__m128i _mm_maskz_packs_epi16( __mmask8 k, __m512i a, __m512i cnt); VPSLLVW __m512i _mm512_mask_sllv_epi16(__m512i s, __mmask32 k, __m512h a, __m512h b, int imm); VPSLLW __m512i _mm512_maskz_slli_epi16( __mmask32 k, __m512h a, __m512h b, __m512h c); __m512h _mm512_fmsubadd_ph (__m512h a, __m512h b, __m512h c, __mmask16 k); VFMSUBxxxPS __m128 _mm_mask_fmsub_ps(__m128 a, __mmask8 k, __m128d a.