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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-04-18 08:27:22 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-04-18 08:27:32 -0700 |
| commit | 1c53cb49de6d82d9469ccbd5aa0c55924502bd8b (patch) | |
| tree | 6af724b3aa088cd29e6ad0b32e7249b1a7b8e62a /ChangeLog | |
| parent | cef9b65376a044309f74b77860ccf3c48a4ae315 (diff) | |
| download | glibc-1c53cb49de6d82d9469ccbd5aa0c55924502bd8b.zip glibc-1c53cb49de6d82d9469ccbd5aa0c55924502bd8b.tar.gz glibc-1c53cb49de6d82d9469ccbd5aa0c55924502bd8b.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.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 21 |
1 files changed, 21 insertions, 0 deletions
@@ -1,3 +1,24 @@ +2017-04-18 H.J. Lu <hongjiu.lu@intel.com> + + * 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. + 2017-04-18 Florian Weimer <fweimer@redhat.com> * elf/dl-misc.c (_dl_sysdep_read_whole_file): Assume that |