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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-04-28 10:26:58 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-04-28 10:27:42 -0700 |
| commit | 5f85ab28690a94355a0eaf75206cdf237fe6009d (patch) | |
| tree | 8d9cba93d093169c5a639adc93537ff0edd0c4ac /NEWS | |
| parent | b2e8c40afcb83f9a6dbbb543ce0951b6c890d350 (diff) | |
| download | glibc-5f85ab28690a94355a0eaf75206cdf237fe6009d.zip glibc-5f85ab28690a94355a0eaf75206cdf237fe6009d.tar.gz glibc-5f85ab28690a94355a0eaf75206cdf237fe6009d.tar.bz2 | |
x86: Set Prefer_No_VZEROUPPER if AVX512ER is available
AVX512ER won't be implemented in any Xeon processors and will be in
all Xeon Phi processors. Don't check CPU model number when setting
Prefer_No_VZEROUPPER for Xeon Phi. Instead, set Prefer_No_VZEROUPPER
if AVX512ER is available. It works with current and future Xeon Phi
and non-Xeon Phi processors.
* sysdeps/x86/cpu-features.c (init_cpu_features): Set
Prefer_No_VZEROUPPER if AVX512ER is available.
* sysdeps/x86/cpu-features.h
(bit_cpu_AVX512PF): New.
(bit_cpu_AVX512ER): Likewise.
(bit_cpu_AVX512CD): Likewise.
(bit_cpu_AVX512BW): Likewise.
(bit_cpu_AVX512VL): Likewise.
(index_cpu_AVX512PF): Likewise.
(index_cpu_AVX512ER): Likewise.
(index_cpu_AVX512CD): Likewise.
(index_cpu_AVX512BW): Likewise.
(index_cpu_AVX512VL): Likewise.
(reg_AVX512PF): Likewise.
(reg_AVX512ER): Likewise.
(reg_AVX512CD): Likewise.
(reg_AVX512BW): Likewise.
(reg_AVX512VL): Likewise.
(cherry picked from commit 1c53cb49de6d82d9469ccbd5aa0c55924502bd8b)
Diffstat (limited to 'NEWS')
0 files changed, 0 insertions, 0 deletions