Post #25289 17 May 27, 2026, 03:23 UTC Accelerating copy_if using SIMDhttps://loonatick-src.github.io/posts/vectorized-copy-if-analysis/https://redd.it/1totd3y@r_cpp Chaitanya Kumar's Blog Accelerating copy_if using SIMD Introduction I have a Zen 4 CPU with a bunch of AVX512 feature flags. So I thought - let’s try and use it to implement something, even if it’s in the realm of wheel-reinvention. I started with the following goals. Implement an algorithm that cannot be vectorized…