From 9939a990fb64aeae9683a67eaf104d4854c38d90 Mon Sep 17 00:00:00 2001 From: "Christoph M. Becker" Date: Sat, 5 Oct 2024 15:33:06 +0200 Subject: [PATCH] [skip ci] Mention AVX(2) detection fix for MSVC in UPGRADING This is likely more important than the possibility to build for AVX-512 since our official binaries have build time support for SSE2 only. So proper detection of AVX may make a huge performance difference for `base64_*()` and some MBString functionality. Closes GH-16248. --- UPGRADING | 2 ++ 1 file changed, 2 insertions(+) diff --git a/UPGRADING b/UPGRADING index e6466d3cfca..40117191257 100644 --- a/UPGRADING +++ b/UPGRADING @@ -1171,6 +1171,8 @@ PHP 8.4 UPGRADE NOTES * Building with Visual Studio now requires at least Visual Studio 2019 (Visual Studio 2022 is recommended, though). +* AVX(2) CPU support is now properly detected for MSVC builds. + * Native AVX-512 builds are now supported (--enable-native-intrinsics=avx512). ========================================