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qsimd_p.h: document that AMD Zen4 supports AVX512 

See https://www.mersenneforum.org/showthread.php?p=614191

Pick-to: 6.4
Change-Id: I810d70e579eb4e2c8e45fffd1719b166daf555e1
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
bb10
Thiago Macieira 2022-09-30 09:49:52 -07:00
parent 91055b66e4
commit fee7844759
1 changed files with 4 additions and 2 deletions
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src/corelib/global/qsimd_p.h
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@ -237,8 +237,10 @@ 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