X86-64: Remove previous default/SSE2/AVX2 memcpy/memmove

Since the new SSE2/AVX2 memcpy/memmove are faster than the previous ones,
we can remove the previous SSE2/AVX2 memcpy/memmove and replace them with
the new ones.

No change in IFUNC selection if SSE2 and AVX2 memcpy/memmove weren't used
before.  If SSE2 or AVX2 memcpy/memmove were used, the new SSE2 or AVX2
memcpy/memmove optimized with Enhanced REP MOVSB will be used for
processors with ERMS.  The new AVX512 memcpy/memmove will be used for
processors with AVX512 which prefer vzeroupper.

Since the new SSE2 memcpy/memmove are faster than the previous default
memcpy/memmove used in libc.a and ld.so, we also remove the previous
default memcpy/memmove and make them the default memcpy/memmove, except
that non-temporal store isn't used in ld.so.

Together, it reduces the size of libc.so by about 6 KB and the size of
ld.so by about 2 KB.

	[BZ #19776]
	* sysdeps/x86_64/memcpy.S: Make it dummy.
	* sysdeps/x86_64/mempcpy.S: Likewise.
	* sysdeps/x86_64/memmove.S: New file.
	* sysdeps/x86_64/memmove_chk.S: Likewise.
	* sysdeps/x86_64/multiarch/memmove.S: Likewise.
	* sysdeps/x86_64/multiarch/memmove_chk.S: Likewise.
	* sysdeps/x86_64/memmove.c: Removed.
	* sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S: Likewise.
	* sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S: Likewise.
	* sysdeps/x86_64/multiarch/memmove-avx-unaligned.S: Likewise.
	* sysdeps/x86_64/multiarch/memmove-sse2-unaligned-erms.S:
	Likewise.
	* sysdeps/x86_64/multiarch/memmove.c: Likewise.
	* sysdeps/x86_64/multiarch/memmove_chk.c: Likewise.
	* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Remove
	memcpy-sse2-unaligned, memmove-avx-unaligned,
	memcpy-avx-unaligned and memmove-sse2-unaligned-erms.
	* sysdeps/x86_64/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Replace
	__memmove_chk_avx512_unaligned_2 with
	__memmove_chk_avx512_unaligned.  Remove
	__memmove_chk_avx_unaligned_2.  Replace
	__memmove_chk_sse2_unaligned_2 with
	__memmove_chk_sse2_unaligned.  Remove __memmove_chk_sse2 and
	__memmove_avx_unaligned_2.  Replace __memmove_avx512_unaligned_2
	with __memmove_avx512_unaligned.  Replace
	__memmove_sse2_unaligned_2 with __memmove_sse2_unaligned.
	Remove __memmove_sse2.  Replace __memcpy_chk_avx512_unaligned_2
	with __memcpy_chk_avx512_unaligned.  Remove
	__memcpy_chk_avx_unaligned_2.  Replace
	__memcpy_chk_sse2_unaligned_2 with __memcpy_chk_sse2_unaligned.
	Remove __memcpy_chk_sse2.  Remove __memcpy_avx_unaligned_2.
	Replace __memcpy_avx512_unaligned_2 with
	__memcpy_avx512_unaligned.  Remove __memcpy_sse2_unaligned_2
	and __memcpy_sse2.  Replace __mempcpy_chk_avx512_unaligned_2
	with __mempcpy_chk_avx512_unaligned.  Remove
	__mempcpy_chk_avx_unaligned_2.  Replace
	__mempcpy_chk_sse2_unaligned_2 with
	__mempcpy_chk_sse2_unaligned.  Remove __mempcpy_chk_sse2.
	Replace __mempcpy_avx512_unaligned_2 with
	__mempcpy_avx512_unaligned.  Remove __mempcpy_avx_unaligned_2.
	Replace __mempcpy_sse2_unaligned_2 with
	__mempcpy_sse2_unaligned.  Remove __mempcpy_sse2.
	* sysdeps/x86_64/multiarch/memcpy.S (__new_memcpy): Support
	__memcpy_avx512_unaligned_erms and __memcpy_avx512_unaligned.
	Use __memcpy_avx_unaligned_erms and __memcpy_sse2_unaligned_erms
	if processor has ERMS.  Default to __memcpy_sse2_unaligned.
	(ENTRY): Removed.
	(END): Likewise.
	(ENTRY_CHK): Likewise.
	(libc_hidden_builtin_def): Likewise.
	Don't include ../memcpy.S.
	* sysdeps/x86_64/multiarch/memcpy_chk.S (__memcpy_chk): Support
	__memcpy_chk_avx512_unaligned_erms and
	__memcpy_chk_avx512_unaligned.  Use
	__memcpy_chk_avx_unaligned_erms and
	__memcpy_chk_sse2_unaligned_erms if if processor has ERMS.
	Default to __memcpy_chk_sse2_unaligned.
	* sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
	Change function suffix from unaligned_2 to unaligned.
	* sysdeps/x86_64/multiarch/mempcpy.S (__mempcpy): Support
	__mempcpy_avx512_unaligned_erms and __mempcpy_avx512_unaligned.
	Use __mempcpy_avx_unaligned_erms and __mempcpy_sse2_unaligned_erms
	if processor has ERMS.  Default to __mempcpy_sse2_unaligned.
	(ENTRY): Removed.
	(END): Likewise.
	(ENTRY_CHK): Likewise.
	(libc_hidden_builtin_def): Likewise.
	Don't include ../mempcpy.S.
	(mempcpy): New.  Add a weak alias.
	* sysdeps/x86_64/multiarch/mempcpy_chk.S (__mempcpy_chk): Support
	__mempcpy_chk_avx512_unaligned_erms and
	__mempcpy_chk_avx512_unaligned.  Use
	__mempcpy_chk_avx_unaligned_erms and
	__mempcpy_chk_sse2_unaligned_erms if if processor has ERMS.
	Default to __mempcpy_chk_sse2_unaligned.

1 files changed, 80 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index b811b0e12d..20e21393d0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,85 @@
 2016-06-08  H.J. Lu  <hongjiu.lu@intel.com>
 
+	[BZ #19776]
+	* sysdeps/x86_64/memcpy.S: Make it dummy.
+	* sysdeps/x86_64/mempcpy.S: Likewise.
+	* sysdeps/x86_64/memmove.S: New file.
+	* sysdeps/x86_64/memmove_chk.S: Likewise.
+	* sysdeps/x86_64/multiarch/memmove.S: Likewise.
+	* sysdeps/x86_64/multiarch/memmove_chk.S: Likewise.
+	* sysdeps/x86_64/memmove.c: Removed.
+	* sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S: Likewise.
+	* sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S: Likewise.
+	* sysdeps/x86_64/multiarch/memmove-avx-unaligned.S: Likewise.
+	* sysdeps/x86_64/multiarch/memmove-sse2-unaligned-erms.S:
+	Likewise.
+	* sysdeps/x86_64/multiarch/memmove.c: Likewise.
+	* sysdeps/x86_64/multiarch/memmove_chk.c: Likewise.
+	* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Remove
+	memcpy-sse2-unaligned, memmove-avx-unaligned,
+	memcpy-avx-unaligned and memmove-sse2-unaligned-erms.
+	* sysdeps/x86_64/multiarch/ifunc-impl-list.c
+	(__libc_ifunc_impl_list): Replace
+	__memmove_chk_avx512_unaligned_2 with
+	__memmove_chk_avx512_unaligned.  Remove
+	__memmove_chk_avx_unaligned_2.  Replace
+	__memmove_chk_sse2_unaligned_2 with
+	__memmove_chk_sse2_unaligned.  Remove __memmove_chk_sse2 and
+	__memmove_avx_unaligned_2.  Replace __memmove_avx512_unaligned_2
+	with __memmove_avx512_unaligned.  Replace
+	__memmove_sse2_unaligned_2 with __memmove_sse2_unaligned.
+	Remove __memmove_sse2.  Replace __memcpy_chk_avx512_unaligned_2
+	with __memcpy_chk_avx512_unaligned.  Remove
+	__memcpy_chk_avx_unaligned_2.  Replace
+	__memcpy_chk_sse2_unaligned_2 with __memcpy_chk_sse2_unaligned.
+	Remove __memcpy_chk_sse2.  Remove __memcpy_avx_unaligned_2.
+	Replace __memcpy_avx512_unaligned_2 with
+	__memcpy_avx512_unaligned.  Remove __memcpy_sse2_unaligned_2
+	and __memcpy_sse2.  Replace __mempcpy_chk_avx512_unaligned_2
+	with __mempcpy_chk_avx512_unaligned.  Remove
+	__mempcpy_chk_avx_unaligned_2.  Replace
+	__mempcpy_chk_sse2_unaligned_2 with
+	__mempcpy_chk_sse2_unaligned.  Remove __mempcpy_chk_sse2.
+	Replace __mempcpy_avx512_unaligned_2 with
+	__mempcpy_avx512_unaligned.  Remove __mempcpy_avx_unaligned_2.
+	Replace __mempcpy_sse2_unaligned_2 with
+	__mempcpy_sse2_unaligned.  Remove __mempcpy_sse2.
+	* sysdeps/x86_64/multiarch/memcpy.S (__new_memcpy): Support
+	__memcpy_avx512_unaligned_erms and __memcpy_avx512_unaligned.
+	Use __memcpy_avx_unaligned_erms and __memcpy_sse2_unaligned_erms
+	if processor has ERMS.  Default to __memcpy_sse2_unaligned.
+	(ENTRY): Removed.
+	(END): Likewise.
+	(ENTRY_CHK): Likewise.
+	(libc_hidden_builtin_def): Likewise.
+	Don't include ../memcpy.S.
+	* sysdeps/x86_64/multiarch/memcpy_chk.S (__memcpy_chk): Support
+	__memcpy_chk_avx512_unaligned_erms and
+	__memcpy_chk_avx512_unaligned.  Use
+	__memcpy_chk_avx_unaligned_erms and
+	__memcpy_chk_sse2_unaligned_erms if if processor has ERMS.
+	Default to __memcpy_chk_sse2_unaligned.
+	* sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
+	Change function suffix from unaligned_2 to unaligned.
+	* sysdeps/x86_64/multiarch/mempcpy.S (__mempcpy): Support
+	__mempcpy_avx512_unaligned_erms and __mempcpy_avx512_unaligned.
+	Use __mempcpy_avx_unaligned_erms and __mempcpy_sse2_unaligned_erms
+	if processor has ERMS.  Default to __mempcpy_sse2_unaligned.
+	(ENTRY): Removed.
+	(END): Likewise.
+	(ENTRY_CHK): Likewise.
+	(libc_hidden_builtin_def): Likewise.
+	Don't include ../mempcpy.S.
+	(mempcpy): New.  Add a weak alias.
+	* sysdeps/x86_64/multiarch/mempcpy_chk.S (__mempcpy_chk): Support
+	__mempcpy_chk_avx512_unaligned_erms and
+	__mempcpy_chk_avx512_unaligned.  Use
+	__mempcpy_chk_avx_unaligned_erms and
+	__mempcpy_chk_sse2_unaligned_erms if if processor has ERMS.
+	Default to __mempcpy_chk_sse2_unaligned.
+
+2016-06-08  H.J. Lu  <hongjiu.lu@intel.com>
+
 	[BZ #19881]
 	* sysdeps/x86_64/multiarch/memset-sse2-unaligned-erms.S: Folded
 	into ...