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glibc/sysdeps/x86
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H.J. Lu e41b395523 [x86] Add a feature bit: Fast_Unaligned_Copy 
On AMD processors, memcpy optimized with unaligned SSE load is
slower than emcpy optimized with aligned SSSE3 while other string
functions are faster with unaligned SSE load.  A feature bit,
Fast_Unaligned_Copy, is added to select memcpy optimized with
unaligned SSE load.

	[BZ #19583]
	* sysdeps/x86/cpu-features.c (init_cpu_features): Set
	Fast_Unaligned_Copy with Fast_Unaligned_Load for Intel
	processors.  Set Fast_Copy_Backward for AMD Excavator
	processors.
	* sysdeps/x86/cpu-features.h (bit_arch_Fast_Unaligned_Copy):
	New.
	(index_arch_Fast_Unaligned_Copy): Likewise.
	* sysdeps/x86_64/multiarch/memcpy.S (__new_memcpy): Check
	Fast_Unaligned_Copy instead of Fast_Unaligned_Load.
2016-03-28 04:40:03 -07:00
..
bits Define _HAVE_STRING_ARCH_mempcpy to 1 for x86 2016-03-08 10:57:41 -08:00
fpu Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
cpu-features-offsets.sym Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00
cpu-features.c [x86] Add a feature bit: Fast_Unaligned_Copy 2016-03-28 04:40:03 -07:00
cpu-features.h [x86] Add a feature bit: Fast_Unaligned_Copy 2016-03-28 04:40:03 -07:00
dl-get-cpu-features.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
elide.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
fpu_control.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
init-arch.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
libc-start.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
linkmap.h Rename bits/linkmap.h to linkmap.h (bug 14912). 2015-09-04 19:44:27 +00:00
Makefile Run tst-prelink test for GLOB_DAT reloc 2015-11-14 12:00:38 -08:00
rtld-global-offsets.sym Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00
string_private.h Add _STRING_INLINE_unaligned and string_private.h 2016-02-18 14:55:29 -02:00
tininess.h Use sysdeps/x86/tininess.h for i386 and x86_64 2012-10-30 20:38:31 -07:00
tst-get-cpu-features-static.c Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00
tst-get-cpu-features.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
Versions Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00