H.J. Lu 5f3d0b78e0 Use AVX unaligned memcpy only if AVX2 is available ...

memcpy with unaligned 256-bit AVX register loads/stores are slow on older
processorsl like Sandy Bridge.  This patch adds bit_AVX_Fast_Unaligned_Load
and sets it only when AVX2 is available.

	[BZ #17801]
	* sysdeps/x86_64/multiarch/init-arch.c (__init_cpu_features):
	Set the bit_AVX_Fast_Unaligned_Load bit for AVX2.
	* sysdeps/x86_64/multiarch/init-arch.h (bit_AVX_Fast_Unaligned_Load):
	New.
	(index_AVX_Fast_Unaligned_Load): Likewise.
	(HAS_AVX_FAST_UNALIGNED_LOAD): Likewise.
	* sysdeps/x86_64/multiarch/memcpy.S (__new_memcpy): Check the
	bit_AVX_Fast_Unaligned_Load bit instead of the bit_AVX_Usable bit.
	* sysdeps/x86_64/multiarch/memcpy_chk.S (__memcpy_chk): Likewise.
	* sysdeps/x86_64/multiarch/mempcpy.S (__mempcpy): Likewise.
	* sysdeps/x86_64/multiarch/mempcpy_chk.S (__mempcpy_chk): Likewise.
	* sysdeps/x86_64/multiarch/memmove.c (__libc_memmove): Replace
	HAS_AVX with HAS_AVX_FAST_UNALIGNED_LOAD.
	* sysdeps/x86_64/multiarch/memmove_chk.c (__memmove_chk): Likewise.

2015-01-30 15:37:58 -08:00

..

bcopy.S

Use IFUNC memmove/memset in x86-64 bcopy/bzero

2012-10-11 13:58:16 -07:00

cacheinfo.c

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ifunc-defines.sym

Detect if AVX2 is usable

2014-04-17 08:00:21 -07:00

ifunc-impl-list.c

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2015-01-02 16:29:47 +00:00

init-arch.c

Use AVX unaligned memcpy only if AVX2 is available

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init-arch.h

Use AVX unaligned memcpy only if AVX2 is available

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Makefile

Improve 64bit memcpy performance for Haswell CPU with AVX instruction

2014-07-30 08:02:35 -07:00

memcmp-sse4.S

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memcmp-ssse3.S

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2015-01-02 16:29:47 +00:00

memcmp.S

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2015-01-02 16:29:47 +00:00

memcpy_chk.S

Use AVX unaligned memcpy only if AVX2 is available

2015-01-30 15:37:58 -08:00

memcpy-avx-unaligned.S

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2015-01-02 16:29:47 +00:00

memcpy-sse2-unaligned.S

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memcpy-ssse3-back.S

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memcpy-ssse3.S

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2015-01-02 16:29:47 +00:00

memcpy.S

Use AVX unaligned memcpy only if AVX2 is available

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memmove_chk.c

Use AVX unaligned memcpy only if AVX2 is available

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memmove-avx-unaligned.S

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2015-01-02 16:29:47 +00:00

memmove-ssse3-back.S

…

memmove-ssse3.S

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memmove.c

Use AVX unaligned memcpy only if AVX2 is available

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mempcpy_chk.S

Use AVX unaligned memcpy only if AVX2 is available

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mempcpy-avx-unaligned.S

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2015-01-02 16:29:47 +00:00

mempcpy-ssse3-back.S

…

mempcpy-ssse3.S

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mempcpy.S

Use AVX unaligned memcpy only if AVX2 is available

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memset_chk.S

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2015-01-02 16:29:47 +00:00

memset-avx2.S

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memset.S

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2015-01-02 16:29:47 +00:00

rtld-memcmp.c

…

rtld-memset.S

Add x86_64 memset optimized for AVX2

2014-06-19 15:14:08 -07:00

sched_cpucount.c

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2015-01-02 16:29:47 +00:00

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-ssse3.S

Improved st{r,p}{,n}cpy for SSE2 and SSSE3 on x86-64

2011-06-24 15:14:22 -04:00

stpcpy.S

Add x86-64 __libc_ifunc_impl_list

2012-10-11 16:41:12 -07:00

stpncpy-c.c

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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.S

Add x86-64 __libc_ifunc_impl_list

2012-10-11 16:41:12 -07:00

strcasecmp_l-ssse3.S

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strcasecmp_l.S

Add x86-64 __libc_ifunc_impl_list

2012-10-11 16:41:12 -07:00

strcasestr.c

Add strstr with unaligned loads. Fixes bug 12100.

2013-12-14 20:08:13 +01:00

strcat-sse2-unaligned.S

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strcat-ssse3.S

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strcat.S

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strchr-sse2-no-bsf.S

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strchr.S

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strcmp-sse2-unaligned.S

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strcmp-sse42.S

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strcmp-ssse3.S

Remove NOT_IN_libc

2014-11-24 15:03:45 +05:30

strcmp.S

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strcpy-sse2-unaligned.S

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strcpy-ssse3.S

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strcpy.S

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strcspn-c.c

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strcspn.S

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strncase_l-ssse3.S

…

strncase_l.S

Add x86-64 __libc_ifunc_impl_list

2012-10-11 16:41:12 -07:00

strncat-c.c

Improve 64 bit strcat functions with SSE2/SSSE3

2011-07-19 17:11:54 -04:00

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.S

Add x86-64 __libc_ifunc_impl_list

2012-10-11 16:41:12 -07:00

strncmp-ssse3.S

Don't define x86-64 __strncmp_ssse3 in libc.a

2012-09-27 07:43:03 -07:00

strncmp.S

Add x86-64 __libc_ifunc_impl_list

2012-10-11 16:41:12 -07:00

strncpy-c.c

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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.S

Add x86-64 __libc_ifunc_impl_list

2012-10-11 16:41:12 -07:00

strpbrk-c.c

…

strpbrk.S

Add x86-64 __libc_ifunc_impl_list

2012-10-11 16:41:12 -07:00

strspn-c.c

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2015-01-02 16:29:47 +00:00

strspn.S

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strstr-sse2-unaligned.S

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strstr.c

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test-multiarch.c

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varshift.c

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varshift.h

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Versions

…

wcscpy-c.c

Remove NOT_IN_libc

2014-11-24 15:03:45 +05:30

wcscpy-ssse3.S

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wcscpy.S

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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.S

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2015-01-02 16:29:47 +00:00