glibc/sysdeps
Noah Goldstein 1b992204f6 x86: Improve memmove-vec-unaligned-erms.S
This patch changes the condition for copy 4x VEC so that if length is
exactly equal to 4 * VEC_SIZE it will use the 4x VEC case instead of
8x VEC case.

Results For Skylake memcpy-avx2-erms
size, al1 , al2 , Cur T   , New T   , Win , New / Cur
128 , 0   , 0   , 9.137   , 6.873   , New , 75.22
128 , 7   , 0   , 12.933  , 7.732   , New , 59.79
128 , 0   , 7   , 11.852  , 6.76    , New , 57.04
128 , 7   , 7   , 12.587  , 6.808   , New , 54.09

Results For Icelake memcpy-evex-erms
size, al1 , al2 , Cur T   , New T   , Win , New / Cur
128 , 0   , 0   , 9.963   , 5.416   , New , 54.36
128 , 7   , 0   , 16.467  , 8.061   , New , 48.95
128 , 0   , 7   , 14.388  , 7.644   , New , 53.13
128 , 7   , 7   , 14.546  , 7.642   , New , 52.54

Results For Tigerlake memcpy-evex-erms
size, al1 , al2 , Cur T   , New T   , Win , New / Cur
128 , 0   , 0   , 8.979   , 4.95    , New , 55.13
128 , 7   , 0   , 14.245  , 7.122   , New , 50.0
128 , 0   , 7   , 12.668  , 6.675   , New , 52.69
128 , 7   , 7   , 13.042  , 6.802   , New , 52.15

Results For Skylake memmove-avx2-erms
size, al1 , al2 , Cur T   , New T   , Win , New / Cur
128 , 0   , 32  , 6.181   , 5.691   , New , 92.07
128 , 32  , 0   , 6.165   , 5.752   , New , 93.3
128 , 0   , 7   , 13.923  , 9.37    , New , 67.3
128 , 7   , 0   , 12.049  , 10.182  , New , 84.5

Results For Icelake memmove-evex-erms
size, al1 , al2 , Cur T   , New T   , Win , New / Cur
128 , 0   , 32  , 5.479   , 4.889   , New , 89.23
128 , 32  , 0   , 5.127   , 4.911   , New , 95.79
128 , 0   , 7   , 18.885  , 13.547  , New , 71.73
128 , 7   , 0   , 15.565  , 14.436  , New , 92.75

Results For Tigerlake memmove-evex-erms
size, al1 , al2 , Cur T   , New T   , Win , New / Cur
128 , 0   , 32  , 5.275   , 4.815   , New , 91.28
128 , 32  , 0   , 5.376   , 4.565   , New , 84.91
128 , 0   , 7   , 19.426  , 14.273  , New , 73.47
128 , 7   , 0   , 15.924  , 14.951  , New , 93.89

Signed-off-by: Noah Goldstein <goldstein.w.n@gmail.com>
2021-05-23 22:50:49 -04:00
..
aarch64 elf: Remove lazy tlsdesc relocation related code 2021-04-21 14:35:53 +01:00
alpha nptl: Move pthread_spin_trylock into libc 2021-04-23 17:06:48 +02:00
arc ARC: Update ulps 2021-04-14 09:24:45 -07:00
arm nptl: Remove remaining code from libpthread 2021-05-21 22:35:01 +02:00
csky Reduce the statically linked startup code [BZ #23323] 2021-02-25 12:13:02 +01:00
generic elf: Add hook for checking HWCAP bits after auxiliary vector parsing 2021-05-19 11:09:57 +02:00
gnu Annotate additional APIs with GCC attribute access. 2021-05-06 11:01:05 -06:00
hppa nptl: Move pthread_spin_init, Move pthread_spin_unlock into libc 2021-04-23 17:06:44 +02:00
htl Hurd: Define ARCH_MIN_GUARD_SIZE in internal <pthread.h> 2021-05-20 18:56:57 +02:00
hurd
i386 Remove architecture specific sched_cpucount optimizations 2021-05-07 13:35:29 -03:00
ia64 nptl: Remove remaining code from libpthread 2021-05-21 22:35:01 +02:00
ieee754 add workload traces for cbrtl 2021-05-10 18:45:34 +02:00
m68k m68: Fix build after 9acda61d94 2021-04-06 15:10:31 -03:00
mach hurd: Add execveat 2021-05-18 09:36:00 +00:00
microblaze Reduce the statically linked startup code [BZ #23323] 2021-02-25 12:13:02 +01:00
mips nptl: Remove remaining code from libpthread 2021-05-21 22:35:01 +02:00
nios2 Update Nios II libm-test-ulps. 2021-04-01 19:41:40 +00:00
nptl nptl: Remove remaining code from libpthread 2021-05-21 22:35:01 +02:00
posix Add C2X timespec_getres 2021-05-17 20:55:21 +00:00
powerpc powerpc64le: Check HWCAP bits against compiler build flags 2021-05-19 11:09:57 +02:00
pthread nptl: Move pthread_create, thrd_create into libc 2021-05-21 22:35:00 +02:00
riscv nptl: Remove remaining code from libpthread 2021-05-21 22:35:01 +02:00
s390 nptl: Remove remaining code from libpthread 2021-05-21 22:35:01 +02:00
sh nptl: Move pthread_spin_trylock into libc 2021-04-23 17:06:48 +02:00
sparc nptl: Remove remaining code from libpthread 2021-05-21 22:35:01 +02:00
unix nptl: Remove remaining code from libpthread 2021-05-21 22:35:01 +02:00
wordsize-32
wordsize-64
x86 x86: Set rep_movsb_threshold to 2112 on processors with FSRM 2021-05-03 05:08:22 -07:00
x86_64 x86: Improve memmove-vec-unaligned-erms.S 2021-05-23 22:50:49 -04:00