Changes/ELN Buildroot and Compose - Fedora Project Wiki https://fedoraproject.org/wiki/Changes/ELN_Buildroot_and_Compose
次期RHELのビルド設定を実験するためのインフラを整備する提案
RHEL9 Likely To Drop Older x86_64 CPUs, Fedora Can Better Prepare With "Enterprise Linux Next" - Phoronix https://www.phoronix.com/scan.php?page=news_item&px=RHEL9-Drop-Old-CPUs-Fedora-ELN
“AVX2 is found on Intel Haswell CPUs (2013) and newer or AMD Excavator CPUs (2015) and newer. (...) Given the past RHEL cycles, Red Hat Enterprise Linux 9 probably won't be out until at least 2023. By that time RHEL9 ships it may be quite reasonable for using AVX2 as a base requirement for RHEL and Fedora.”
AVX2は7年前、マジかっつってる
AVX: Sandy Bridge (2011) / Bulldozer (2011)
SSE4.2: Nehalem (2008) / Bulldozer (2011)
SSE4.1: Penryn (2008) / Bulldozer (2011)
SSSE3: Woodcrest (2006) / Bulldozer (2011)
SSE3: Prescott (2004) / Opteron (2004-ish)
こうして並べると、使う命令をx86_64のベースラインから上げるならSSE3の次は刻まずにAVXまで一気に上げた方が良さそうに見える
