What is the best way to emulate AVX512’s _mm256_cvtepi32_epi8 with AVX2
I’ve got a ymm register where I only care about the first byte of every four bytes, i.e. I want exactly _mm256_cvtepi32_epi8, but it’s only in AVX512.
I’ve got a ymm register where I only care about the first byte of every four bytes, i.e. I want exactly _mm256_cvtepi32_epi8, but it’s only in AVX512.