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1a0994f535
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25 Commits

Author SHA1 Message Date
Carlos O'Donell
1a0994f535 BZ#14059: Fix AVX and FMA4 detection. 
Fix AVX and FMA4 detection by following the guidelines
set out by Intel and AMD for detecting these features.
 2012-05-17 06:59:28 -07:00
Paul Eggert
59ba27a63a Replace FSF snail mail address with URLs. 2012-02-09 23:18:22 +00:00
Ulrich Drepper
08cf777f9e Really fix AVX tests 
There is no problem with strcmp, it doesn't use the YMM registers.
The math routines might since gcc perhaps generates such code.
Introduce bit_YMM_USBALE and use it in the math routines.
 2012-01-26 09:45:54 -05:00
Ulrich Drepper
afc5ed09cb Reset bit_AVX in __cpu_features is OS support is missing 2012-01-26 07:45:14 -05:00
Ulrich Drepper
e0016b11d6 Add AVX optimized versions for some x86-64 math functions 2011-10-25 21:34:55 -04:00
Ulrich Drepper
ed72b6545f Check for FMA4 support and generate appropriate fma functions 2011-10-20 22:43:15 -04:00
Ulrich Drepper
d9a4d2ab27 Add optimized str{,n}casecmp for AVX on x86-64 2011-10-19 12:42:38 -04:00
Liubov Dmitrieva
99710781cc Improve 64 bit strcat functions with SSE2/SSSE3 2011-07-19 17:11:54 -04:00
H.J. Lu
0b1cbaaef5 Optimized st{r,p}{,n}cpy for SSE2/SSSE3 on x86-32 2011-06-24 14:15:32 -04:00
H.J. Lu
ff02d5280b Use IFUNC on x86-64 memset 2010-11-08 03:41:34 -05:00
H.J. Lu
e73015f2d6 Unroll 32bit SSE strlen and handle slow bsf 2010-08-25 10:07:37 -07:00
H.J. Lu
6fb8cbcb58 Improve 64bit memcpy/memmove for Atom, Core 2 and Core i7 
This patch includes optimized 64bit memcpy/memmove for Atom, Core 2 and
Core i7.  It improves memcpy by up to 3X on Atom, up to 4X on Core 2 and
up to 1X on Core i7.  It also improves memmove by up to 3X on Atom, up to
4X on Core 2 and up to 2X on Core i7.
 2010-06-30 08:26:11 -07:00
Ulrich Drepper
bbbdd77809 Update x86-64 cpu multiarch selection header. 2010-04-13 19:17:10 -07:00
Ulrich Drepper
22f4f44b67 Fix concurrent handling of __cpu_features. 2010-04-04 00:25:46 -07:00
H.J. Lu
3af48cbdfa Optimize 32bit memset/memcpy with SSE2/SSSE3. 2010-01-12 11:22:03 -08:00
H.J. Lu
2510d01ddb Define bit_SSE2 and index_SSE2. 2009-12-13 15:23:02 -08:00
H.J. Lu
51ddd2c01e Define bit_XXX and index_XXX. 
This patch defines bit_XXX and index_XXX and use them to check processor
feature in assembly code.  It can prevent typos in processor feature
check.
 2009-12-13 09:47:02 -08:00
Roland McGrath
9d6982d5d2 Clean up x86 multiarch HAS_FOO macros. 2009-10-06 19:59:03 -07:00
H.J. Lu
6f6f1215f6 Support multiarch for i686. 
This patch adds multiarch support when configured for i686.  I modified
some x86-64 functions to support 32bit. I will contribute 32bit SSE string
and memory functions later.
 2009-07-31 11:53:35 -07:00
Ulrich Drepper
9a1d2d4555 Prepare use if IFUNC functions outside libc.so. 
We use a callback function into libc.so to get access to the data
structure with the information and have special versions of the test
macros which automatically use this function.
 2009-07-29 15:22:28 -07:00
H.J. Lu
0181291385 Determine and store processor family and model on x86-64. 2009-06-30 04:39:09 -07:00
H.J. Lu
772f4e6a1b Add SSE4.2 support for strcmp and strncmp on x86-64. 2009-06-22 20:38:41 -07:00
Ulrich Drepper
3ab2d57a4d Optimize x86-64 strlen for SSE4.2. 
The SSE4.2 implementation is used in the DSO only.  The patch also adds
some infrastructure to be used in similar code later one.
 2009-06-05 11:32:00 -07:00
Ulrich Drepper
963cb6fcb4 Simplify CPUID value handling. 
SO far Intel and AMD use exactly the same bits meaning the same
things in CPUID index 1.  Simplify the code.  Should an architecture
come along which doesn't use the same semantics then it must use a
different index value than COMMON_CPUID_INDEX_1.
 2009-05-31 17:52:05 -07:00
Ulrich Drepper
425ce2edb9 * config.h.in (USE_MULTIARCH): Define. 
* configure.in: Handle --enable-multi-arch.
	* elf/dl-runtime.c (_dl_fixup): Handle STT_GNU_IFUNC.
	(_dl_fixup_profile): Likewise.
	* elf/do-lookup.c (dl_lookup_x): Likewise.
	* sysdeps/x86_64/dl-machine.h: Handle STT_GNU_IFUNC.
	* elf/elf.h (STT_GNU_IFUNC): Define.
	* include/libc-symbols.h (libc_ifunc): Define.
	* sysdeps/x86_64/cacheinfo.c: If USE_MULTIARCH is defined, use the
	framework in init-arch.h to get CPUID values.
	* sysdeps/x86_64/multiarch/Makefile: New file.
	* sysdeps/x86_64/multiarch/init-arch.c: New file.
	* sysdeps/x86_64/multiarch/init-arch.h: New file.
	* sysdeps/x86_64/multiarch/sched_cpucount.c: New file.

	* config.make.in (experimental-malloc): Define.
	* configure.in: Handle --enable-experimental-malloc.
	* malloc/Makefile: Handle experimental-malloc flag.
	* malloc/malloc.c: Implement PER_THREAD and ATOMIC_FASTBINS features.
	* malloc/arena.c: Likewise.
	* malloc/hooks.c: Likewise.
	* malloc/malloc.h: Define M_ARENA_TEST and M_ARENA_MAX.
 2009-03-13 23:53:18 +00:00