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v3.15.2

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Jay D Dee
2020-11-15 17:57:06 -05:00
parent 4fa8fcea8b
commit 45ecd0de14
42 changed files with 2490 additions and 445 deletions
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12
sysinfos.c
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@@ -483,11 +483,13 @@ static inline bool has_avx512()
// AMD Zen3 added support for 256 bit VAES without requiring AVX512.
// The original Intel spec requires AVX512F to support 512 bit VAES and
// requires AVX512VL to support 256 bit VAES.
// cpuminer-opt only uses VAES512, simply testing the VAES bit is sufficient.
// However, proper detection of VAES512 and VAES256 requires more work:
// VAES512 = VAES && AVX512F (may not support VAES256)
// VAES256 = AVX512VL ? VAES : ( AVX && VAES ) (may not support VAES512)
// VAES = VAES && AVX512F && AVX512VL (supports both)
// The CPUID VAES bit alone can't distiguish 256 vs 512 bit.
// If necessary:
// VAES 256 & 512 = VAES && AVX512VL
// VAES 512 = VAES && AVX512F
// VAES 256 = ( VAES && AVX512VL ) || ( VAES && !AVX512F )
// VAES 512 only = VAES && AVX512F && !AVX512VL
// VAES 256 only = VAES && !AVX512F
static inline bool has_vaes()
{