Maybe vote on it? (that was suggested in the PR too, https://github.com/php/php-src/pull/13194#issuecomment-1900430400 )
Can think of 6 things 1: Should BLAKE3 be added to PHP? yes/no 2: Should ARM Neon (2007) optimized implementation be bundled? yes/no 3: Should x86_64 SSE2 (2000) optimized implementation be bundled? yes/no 4: Should x86_64 SSE4.1 (2007) optimized implementation be bundled? yes/no 5: Should x86_64 AVX2 (2011) optimized implementation be bundled? yes/no 6: Should x86_64 AVX512 (2016) optimized implementation be bundled? yes/no (wrote the year processors were actually released, not the year instructions were proposed/announced) Arguments against SSE2 and SSE4.1: pretty much all modern CPUs supporting SSE2/SSE4.1 also support AVX2. Argument against AVX512: CloudFlare said in a blogpost that when a core starts executing AVX512 instructions, it decreases the clock speed of neighboring cores so much that, quote: >OpenSSL serves 10% fewer requests per second. And that is a huge number! It is equivalent to giving up on two cores, for nothing and another quote: >If you do not require AVX-512 for some specific high performance tasks, I suggest you disable AVX-512 execution on your server or desktop, to avoid accidental AVX-512 throttling. (ref https://blog.cloudflare.com/on-the-dangers-of-intels-frequency-scaling ) that AVX512 issue is probably cpu-specific and will probably be mitigated in newer CPU releases (idk if AMD is even affected, or if it is purely a Intel issue) thus they may be worthy of a vote
