H.J. Lu 3ec5d83d2a x86-64: Avoid rep movsb with short distance [BZ #27130] ... When copying with "rep movsb", if the distance between source and destination is N*4GB + [1..63] with N >= 0, performance may be very slow. This patch updates memmove-vec-unaligned-erms.S for AVX and AVX512 versions with the distance in RCX: cmpl $63, %ecx // Don't use "rep movsb" if ECX <= 63 jbe L(Don't use rep movsb") Use "rep movsb" Benchtests data with bench-memcpy, bench-memcpy-large, bench-memcpy-random and bench-memcpy-walk on Skylake, Ice Lake and Tiger Lake show that its performance impact is within noise range as "rep movsb" is only used for data size >= 4KB.		2021-01-04 07:58:57 -08:00
..
bcopy.S	Use IFUNC memmove/memset in x86-64 bcopy/bzero	2012-10-11 13:58:16 -07:00
ifunc-avx2.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ifunc-impl-list.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ifunc-memcmp.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ifunc-memmove.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ifunc-memset.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ifunc-sse4_2.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ifunc-strcasecmp.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ifunc-strcpy.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ifunc-wmemset.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Makefile	x86: Install <sys/platform/x86.h> [BZ #26124]	2020-09-11 17:20:52 -07:00
memchr-avx2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memchr-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memchr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memcmp-avx2-movbe.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memcmp-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memcmp-sse4.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memcmp-ssse3.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memcmp.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memcpy_chk-nonshared.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memcpy_chk.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memcpy-ssse3-back.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memcpy-ssse3.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memcpy.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memmove_chk-nonshared.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memmove_chk.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memmove-avx512-no-vzeroupper.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memmove-avx512-unaligned-erms.S	Require binutils 2.24 to build x86-64 glibc [BZ #20139]	2016-07-01 06:03:05 -07:00
memmove-avx-unaligned-erms.S	X86-64: Use non-temporal store in memcpy on large data	2016-04-12 08:10:47 -07:00
memmove-sse2-unaligned-erms.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memmove-ssse3-back.S	Improve 64bit memcpy/memmove for Atom, Core 2 and Core i7	2010-06-30 08:26:11 -07:00
memmove-ssse3.S	Improve 64bit memcpy/memmove for Atom, Core 2 and Core i7	2010-06-30 08:26:11 -07:00
memmove-vec-unaligned-erms.S	x86-64: Avoid rep movsb with short distance [BZ #27130]	2021-01-04 07:58:57 -08:00
memmove.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mempcpy_chk-nonshared.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mempcpy_chk.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
mempcpy.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memrchr-avx2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memrchr-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memrchr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memset_chk-nonshared.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memset_chk.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memset-avx2-unaligned-erms.S	x86-64: Optimize wmemset with SSE2/AVX2/AVX512	2017-06-05 11:09:59 -07:00
memset-avx512-no-vzeroupper.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memset-avx512-unaligned-erms.S	x86-64: Optimize wmemset with SSE2/AVX2/AVX512	2017-06-05 11:09:59 -07:00
memset-sse2-unaligned-erms.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memset-vec-unaligned-erms.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
memset.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
rawmemchr-avx2.S	x86-64: Optimize memchr/rawmemchr/wmemchr with SSE2/AVX2	2017-06-09 05:13:31 -07:00
rawmemchr-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
rawmemchr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
sched_cpucount.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
stpcpy-avx2.S	x86-64: Optimize strcat/strncat, strcpy/strncpy and stpcpy/stpncpy with AVX2	2019-01-14 09:43:38 -06:00
stpcpy-sse2-unaligned.S	Improved st{r,p}{,n}cpy for SSE2 and SSSE3 on x86-64	2011-06-24 15:14:22 -04:00
stpcpy-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
stpcpy-ssse3.S	Improved st{r,p}{,n}cpy for SSE2 and SSSE3 on x86-64	2011-06-24 15:14:22 -04:00
stpcpy.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
stpncpy-avx2.S	x86-64: Optimize strcat/strncat, strcpy/strncpy and stpcpy/stpncpy with AVX2	2019-01-14 09:43:38 -06:00
stpncpy-c.c	x86-64: Implement strcpy family IFUNC selectors in C	2017-06-12 09:06:09 -07:00
stpncpy-sse2-unaligned.S	Improved st{r,p}{,n}cpy for SSE2 and SSSE3 on x86-64	2011-06-24 15:14:22 -04:00
stpncpy-ssse3.S	Improved st{r,p}{,n}cpy for SSE2 and SSSE3 on x86-64	2011-06-24 15:14:22 -04:00
stpncpy.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcasecmp_l-avx.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcasecmp_l-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcasecmp_l-sse4_2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcasecmp_l-ssse3.S	Fix x86-64 build without multiarch.	2010-08-14 14:56:32 -07:00
strcasecmp_l.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcasecmp.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcat-avx2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcat-sse2-unaligned.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcat-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcat-ssse3.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcat.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strchr-avx2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strchr-sse2-no-bsf.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strchr-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strchr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strchrnul-avx2.S	x86-64: Optimize strchr/strchrnul/wcschr with AVX2	2017-06-09 05:42:29 -07:00
strchrnul-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strchrnul.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcmp-avx2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcmp-sse2-unaligned.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcmp-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcmp-sse4_2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcmp-sse42.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcmp-ssse3.S	Remove NOT_IN_libc	2014-11-24 15:03:45 +05:30
strcmp.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcpy-avx2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcpy-sse2-unaligned.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcpy-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcpy-ssse3.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcpy.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcspn-c.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcspn-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strcspn.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strlen-avx2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strlen-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strlen.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strncase_l-avx.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strncase_l-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strncase_l-sse4_2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strncase_l-ssse3.S	Add optimized strncasecmp versions for x86-64.	2010-08-14 22:04:01 -07:00
strncase_l.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strncase.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strncat-avx2.S	x86-64: Optimize strcat/strncat, strcpy/strncpy and stpcpy/stpncpy with AVX2	2019-01-14 09:43:38 -06:00
strncat-c.c	x86-64: Use IFUNC strncat inside libc.so	2018-05-16 09:04:35 -07:00
strncat-sse2-unaligned.S	Improve 64 bit strcat functions with SSE2/SSSE3	2011-07-19 17:11:54 -04:00
strncat-ssse3.S	Improve 64 bit strcat functions with SSE2/SSSE3	2011-07-19 17:11:54 -04:00
strncat.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strncmp-avx2.S	x86-64: Optimize strcmp/wcscmp and strncmp/wcsncmp with AVX2	2018-06-01 16:32:43 -05:00
strncmp-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strncmp-sse4_2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strncmp-ssse3.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strncmp.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strncpy-avx2.S	x86-64: Optimize strcat/strncat, strcpy/strncpy and stpcpy/stpncpy with AVX2	2019-01-14 09:43:38 -06:00
strncpy-c.c	x86-64: Implement strcpy family IFUNC selectors in C	2017-06-12 09:06:09 -07:00
strncpy-sse2-unaligned.S	Improved st{r,p}{,n}cpy for SSE2 and SSSE3 on x86-64	2011-06-24 15:14:22 -04:00
strncpy-ssse3.S	Improved st{r,p}{,n}cpy for SSE2 and SSSE3 on x86-64	2011-06-24 15:14:22 -04:00
strncpy.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strnlen-avx2.S	x86-64: Optimize strlen/strnlen/wcslen/wcsnlen with AVX2	2017-06-09 05:18:18 -07:00
strnlen-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strnlen.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strpbrk-c.c	x86-64: Implement strcspn/strpbrk/strspn IFUNC selectors in C	2017-06-15 08:59:05 -07:00
strpbrk-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strpbrk.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strrchr-avx2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strrchr-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strrchr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strspn-c.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strspn-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strspn.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strstr-sse2-unaligned.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
strstr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
varshift.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
varshift.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wcschr-avx2.S	x86-64: Optimize strchr/strchrnul/wcschr with AVX2	2017-06-09 05:42:29 -07:00
wcschr-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wcschr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wcscmp-avx2.S	x86-64: Optimize strcmp/wcscmp and strncmp/wcsncmp with AVX2	2018-06-01 16:32:43 -05:00
wcscmp-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wcscmp.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wcscpy-c.c	wcsmbs: optimize wcscat	2019-02-27 10:00:37 -03:00
wcscpy-ssse3.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wcscpy.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wcslen-avx2.S	x86-64: Optimize strlen/strnlen/wcslen/wcsnlen with AVX2	2017-06-09 05:18:18 -07:00
wcslen-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wcslen.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wcsncmp-avx2.S	x86-64: Optimize strcmp/wcscmp and strncmp/wcsncmp with AVX2	2018-06-01 16:32:43 -05:00
wcsncmp-sse2.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wcsncmp.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wcsnlen-avx2.S	x86-64: Optimize strlen/strnlen/wcslen/wcsnlen with AVX2	2017-06-09 05:18:18 -07:00
wcsnlen-c.c	x86-64: Move wcsnlen.S to multiarch/wcsnlen-sse4_1.S	2017-06-06 06:12:32 -07:00
wcsnlen-sse4_1.S	x86-64: Move wcsnlen.S to multiarch/wcsnlen-sse4_1.S	2017-06-06 06:12:32 -07:00
wcsnlen.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wcsrchr-avx2.S	x86-64: Optimize strrchr/wcsrchr with AVX2	2017-06-09 05:45:52 -07:00
wcsrchr-sse2.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wcsrchr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wmemchr-avx2.S	x86-64: Optimize memchr/rawmemchr/wmemchr with SSE2/AVX2	2017-06-09 05:13:31 -07:00
wmemchr-sse2.S	x86-64: Optimize memchr/rawmemchr/wmemchr with SSE2/AVX2	2017-06-09 05:13:31 -07:00
wmemchr.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wmemcmp-avx2-movbe.S	x86-64: Optimize memcmp/wmemcmp with AVX2 and MOVBE	2017-06-05 12:52:55 -07:00
wmemcmp-c.c	Remove NOT_IN_libc	2014-11-24 15:03:45 +05:30
wmemcmp-sse4.S	Optimized memcmp and wmemcmp for x86-64 and x86-32	2011-10-15 11:10:08 -04:00
wmemcmp-ssse3.S	Optimized memcmp and wmemcmp for x86-64 and x86-32	2011-10-15 11:10:08 -04:00
wmemcmp.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wmemset_chk-nonshared.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wmemset_chk.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
wmemset.c	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00