| commit | 40399ecb6959ae696c235097c773d776392fde1f | |
| author | Cathy Zhang <cathy.zhang@intel.com> | |
| Wed, 16 Dec 2020 22:40:02 +0000 (17 06:40 +0800) | ||
| committer | Eduardo Habkost <ehabkost@redhat.com> | |
| Wed, 16 Dec 2020 20:50:33 +0000 (16 15:50 -0500) | ||
| tree | d10fa5dea0a21837957c13f43389322e417e82c3 | treesnapshot (tar.gz zip) |
| parent | 23eb5d032f468e3054f2408cd7a0729a50aca0b7 | commitdiff |
x86/cpu: Add AVX512_FP16 cpu feature
AVX512 Half-precision floating point (FP16) has better performance
compared to FP32 if the presicion or magnitude requirements are met.
It's defined as CPUID.(EAX=7,ECX=0):EDX[bit 23].
Refer to
https://software.intel.com/content/www/us/en/develop/download/\
intel-architecture-instruction-set-extensions-programming-reference.html
Signed-off-by: Cathy Zhang <cathy.zhang@intel.com>
Message-Id: <20201216224002.32677-1-cathy.zhang@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
AVX512 Half-precision floating point (FP16) has better performance
compared to FP32 if the presicion or magnitude requirements are met.
It's defined as CPUID.(EAX=7,ECX=0):EDX[bit 23].
Refer to
https://software.intel.com/content/www/us/en/develop/download/\
intel-architecture-instruction-set-extensions-programming-reference.html
Signed-off-by: Cathy Zhang <cathy.zhang@intel.com>
Message-Id: <20201216224002.32677-1-cathy.zhang@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
| target/i386/cpu.c | diffblobblamehistory | |
| target/i386/cpu.h | diffblobblamehistory |