From 81fc4dfc356894980dfc54690444c94a251246b6 Mon Sep 17 00:00:00 2001 From: Thiago Macieira Date: Fri, 30 Sep 2022 09:49:52 -0700 Subject: [PATCH] qsimd_p.h: document that AMD Zen4 supports AVX512 See https://www.mersenneforum.org/showthread.php?p=614191 Change-Id: I810d70e579eb4e2c8e45fffd1719b166daf555e1 Reviewed-by: Allan Sandfeld Jensen (cherry picked from commit fee7844759f3c1dbc8a00139d923211990a07775) Reviewed-by: Qt Cherry-pick Bot --- src/corelib/global/qsimd_p.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/src/corelib/global/qsimd_p.h b/src/corelib/global/qsimd_p.h index fac49d142a9..08d9fc8ffa2 100644 --- a/src/corelib/global/qsimd_p.h +++ b/src/corelib/global/qsimd_p.h @@ -223,8 +223,10 @@ static_assert(ARCH_HASWELL_MACROS, "Undeclared identifiers indicate which featur // x86-64 sub-architecture version 4 // -// Similar to the above, x86-64-v4 marches the AVX512 variant of the Intel Core -// 6th generation (codename "Skylake"). +// Similar to the above, x86-64-v4 matches the AVX512 variant of the Intel Core +// 6th generation (codename "Skylake"). AMD Zen4 is the their first processor +// with AVX512 support and it includes all of these too. +// # define ARCH_SKX_MACROS (__AVX512F__ + __AVX512BW__ + __AVX512CD__ + __AVX512DQ__ + __AVX512VL__) # if ARCH_SKX_MACROS != 0 # if ARCH_SKX_MACROS != 5