7b1902cb3e
Improve erfc accuracy.
2012-03-01 21:15:38 +00:00
0fcad3e243
Add test for bug 5794 (incorrect expm1 overflow).
2012-02-29 20:49:20 +00:00
5b8a4d4a09
Reduce large expected errors from libm tests on x86 and x86_64.
2012-02-29 20:40:50 +00:00
39adf059fc
Optimized expf for x86-64
2012-02-28 20:06:39 -05:00
5ad91f6e6f
Resort ULPs files with gen-libm-test.pl -n in C locale.
2012-02-20 18:06:05 +00:00
ed656b4065
Provide crt[in].S for x86-64.
2012-02-14 13:50:44 +01:00
59ba27a63a
Replace FSF snail mail address with URLs.
2012-02-09 23:18:22 +00:00
6c6dbc6300
Reduce ldouble ULPs for jn tests on x86
2012-02-08 22:25:15 +01:00
622c86f480
Remove __ELF__ conditionals
2012-02-07 00:41:11 +01:00
3b1004624e
Fix makefile/configure problems with sse2avx changes.
2012-01-30 19:55:15 +00:00
96bc5b45a6
Optimize x86-64 math inline header a bit
2012-01-28 21:20:06 -05:00
56f6f6a240
Use -msse2avx option for x86-64 libm functions
2012-01-28 14:48:46 -05:00
73139a7628
Simplify use of AVX instructions in internal math macros
2012-01-28 11:19:06 -05:00
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
afc5ed09cb
Reset bit_AVX in __cpu_features is OS support is missing
2012-01-26 07:45:14 -05:00
a0da5fe1e4
More fallout from supporting only ELF
2012-01-08 00:45:01 -05:00
a784e50247
Remove pre-ISO C support
...
No more __const.
2012-01-07 23:57:22 -05:00
0269750ca6
Remove non-ELF support
2012-01-07 20:30:26 -05:00
305502f69d
Fix up a comment
2012-01-07 11:49:33 -05:00
e40bca1ef9
Yet more ia64 removal fallout
2012-01-07 11:44:02 -05:00
530a32499a
Fix typos in comments
2011-12-23 13:59:40 -05:00
67371b5666
Prevent warnings due to long long constants
2011-12-23 13:52:59 -05:00
15db4de19d
Fix overrun in destination buffer
2011-12-23 12:02:15 -05:00
21eaf3a5f9
Use __REDIRECT_NTH for __feraiseexcept_renamed
2011-12-22 08:05:21 -05:00
d2daaa1eb6
Define x86_64 feraiseexcept inline only under __USE_EXTERN_INLINES.
2011-12-21 13:27:09 -08:00
370a7d88f7
WP fixes
2011-12-17 14:41:05 -05:00
1d3e4b618a
Optimized wcschr and wcscpy for x86-64 and x86-32
2011-12-17 14:39:23 -05:00
aff2453df7
Fix more warnings
2011-12-03 21:49:35 -05:00
34372fc6d3
Fix test of non-ASCII locales in x86-64 strcasecmp et.al.
2011-11-01 16:46:23 -04:00
52e4b9eb62
More cleanups of x86-64 strstr
2011-10-28 19:01:48 -04:00
fd52bc6dc4
Clean up x86-64 strcasestr
...
Actually describe in the C code what is going on.
2011-10-28 18:18:04 -04:00
a5b81e1fb7
Remove code without too much effects
...
Some of the AVX-specific code is not giving enough speed-up to
justify the extra code.
2011-10-28 16:55:01 -04:00
e0016b11d6
Add AVX optimized versions for some x86-64 math functions
2011-10-25 21:34:55 -04:00
618280a192
Optimize x86-64 SSE4.2+ strcmp a bit more
2011-10-25 14:50:31 -04:00
31ea014d8b
Use VEX encoding in inline math functions on x86-64 when possible
2011-10-25 08:17:57 -04:00
31d3cc00b0
Cleanup FMA4 patch
...
Move the FMA4 code into its own section. Avoid some of the duplication
of data resulting from the double use of source files.
2011-10-25 00:56:33 -04:00
202c9deb15
Better DLA_FMS
...
It's better to use __builtin_fma if it works. Use it for gcc 4.6 and
higher. Move the x86-64 dla.h to the correct place.
2011-10-24 22:11:21 -04:00
a0cf1edd4c
Use inline asm for DLA_FMS because of broken old compilers
2011-10-24 21:17:10 -04:00
af968f62f2
Optimize accurate 64-bit routines for FMA4 on x86-64
2011-10-24 20:19:17 -04:00
09229f3e1b
Fix WS
2011-10-23 14:57:28 -04:00
ce7dd29f28
Optimized strnlen and wcscmp for x86-64
2011-10-23 14:56:04 -04:00
f17424ed53
Fix WS
2011-10-23 13:35:24 -04:00
95584d3b33
Fix signedness in wcscmp comparison
2011-10-23 13:34:15 -04:00
774a2669af
Clean up FMA use
...
The macro's name should reflect that subtraction is being done. And
use __builtin_fma, it seems to work after all.
2011-10-23 13:31:01 -04:00
c8b3296bbe
Clean up last dla.h change
2011-10-23 12:50:28 -04:00
fb24de5932
Fix typo in last change
2011-10-22 20:09:58 -04:00
0d355eb7c7
Update ULPs for x86-64
2011-10-22 20:06:23 -04:00
c196fed8f0
Fix compilation problems in x86-64 init-arch
2011-10-21 20:47:20 -04:00
1a97a8c78f
Don't use NULL in last s_fma{,f} change
2011-10-21 07:39:28 -04:00
ed72b6545f
Check for FMA4 support and generate appropriate fma functions
2011-10-20 22:43:15 -04:00
8d4f46c613
Move fma routines to right place
2011-10-20 21:55:41 -04:00
855d156018
Optimize x86-64 rawmemchr and add test
2011-10-19 22:22:29 -04:00
d9a4d2ab27
Add optimized str{,n}casecmp for AVX on x86-64
2011-10-19 12:42:38 -04:00
8f3b1ffefa
Fix PLT use for feraiseexcept on x86_64
2011-10-19 13:03:31 +02:00
d9a8d0abcc
Use new internal libc_fe* interfaces in more functions
2011-10-18 15:11:31 -04:00
4855e3ddf5
Provide combined internal feholdexcept/fesetround interface
2011-10-18 09:59:04 -04:00
23ce562780
Pretty print last change to x86-64 mathinline.h
2011-10-18 09:38:47 -04:00
581d30e386
Add optimized nearbyint{,f} for x86-64
2011-10-18 09:13:23 -04:00
d38f1dba00
Start optimizing the use of the fenv interfaces in libm itself
2011-10-18 09:00:46 -04:00
83c7615c2d
Fix last change
2011-10-18 14:11:29 +02:00
caa6c9d845
Fix linkage conflict with feraiseexcept
2011-10-18 11:46:51 +02:00
228a984d54
Relax asm requirements for recently added x86-64 math interfaces
2011-10-17 20:30:52 -04:00
c8553a6a6f
Makr x86-64 math_private.h more robust
2011-10-17 16:00:39 -04:00
ed22dcf691
Provide internal optimizations on x86-64 with SSE4.1
...
Provide macros so that the internal users can, if possible, directly use
the new instructions.
Also fix up the mathinline.h header when compiling with SSE4.1 enabled.
2011-10-17 11:23:40 -04:00
b171c13768
Fix last x86-64 mathinline change
...
Use correct function names.
2011-10-17 10:37:00 -04:00
ad0f5cad15
Use rounds{s,d} for x86 rint, ceil, floor
2011-10-16 20:58:17 -04:00
2d1f3a4db6
Fix WS
2011-10-15 11:11:12 -04:00
be13f7bff6
Optimized memcmp and wmemcmp for x86-64 and x86-32
2011-10-15 11:10:08 -04:00
6b1f68c91f
Fix lost feraiseexcept symbol
2011-10-14 11:21:23 +02:00
714fad23c6
Fix PLT use in feupdateenv on x86_64
2011-10-13 15:26:45 +02:00
81dcc7fb74
Check for zero size in memrchr for x86_64
2011-10-13 13:34:41 +02:00
0ac5ae2335
Optimize libm
...
libm is now somewhat integrated with gcc's -ffinite-math-only option
and lots of the wrapper functions have been optimized.
2011-10-12 11:27:51 -04:00
7edb55ce06
Optimize use of isnan, isinf, finite
2011-10-08 10:18:26 -04:00
66fb11b1da
Fix whitespace
2011-10-07 11:50:21 -04:00
093ecf9299
Improve 64 bit memchr, memrchr, rawmemchr with SSE2
2011-10-07 11:49:10 -04:00
3a62d00d40
Don't call ifunc functions in trace mode
2011-10-05 14:35:40 +02:00
bf972c9dfc
Fix parse error in bits/mathinline.h with --std=c99
2011-09-26 14:01:30 +02:00
4c1a1f71c0
Add fmax and fmin inlines for x86-64
2011-09-15 13:11:08 -04:00
ee4d03150a
Use correct section to allow merging
2011-09-14 13:43:24 -04:00
cd20565401
Optimized lrint and llrint for x86-64
2011-09-14 12:58:43 -04:00
e529793b50
Avoid macro clash between <sys/select.h> and <linux/posix_types.h>
2011-09-13 15:16:38 +02:00
83cd142045
Remove --wth-tls option, TLS support is required
2011-09-11 15:02:01 -04:00
d063d16433
Remove support for !USE___THREAD
2011-09-10 16:50:28 -04:00
1248c1c415
Fix jn precision
2011-09-09 22:16:10 -04:00
08a300c956
Simplify AVX check
2011-09-07 21:38:23 -04:00
ceaa0c5dc3
Move Atom-optimized code out of the way and together
2011-09-06 21:53:03 -04:00
8e1294e83f
Remove now-wrong comment
2011-09-06 17:20:33 -04:00
6d18b67f4d
Fix whitespaces
2011-09-05 21:42:12 -04:00
a5f524e479
Add Atom-optimized strchr and strrchr for x86-64
2011-09-05 21:34:03 -04:00
49d42c37ba
Add optimized x86-64 wcscmp
2011-09-05 14:08:23 -04:00
0276a718c0
Fix minor CFI problem in regular x86-64 trampoline
2011-08-20 08:58:44 -04:00
c88f17668b
Fix CFI info in x86-64 trampolines for non-AVX code
2011-08-20 08:56:30 -04:00
8e999d2962
Minor optimization of popcount in l10nflist
2011-08-11 14:07:04 -04:00
8c1a459f9a
Fix inline strncat/strncmp on x86
2011-08-04 14:59:25 -04:00
bba33c289b
One more typo in AVX test
2011-07-23 15:18:13 -04:00
2ee5518515
Merge branch 'master' of ssh://sourceware.org/git/glibc
...
Conflicts:
ChangeLog
2011-07-23 00:04:15 -04:00
1aae088a8a
One more change to XSAVE patch
2011-07-22 23:33:22 -04:00
1d002f2539
Fix AVX check
2011-07-22 14:33:47 -04:00
21137f89c5
Fix overflow bug is optimized strncat for x86-64
2011-07-21 12:32:36 -04:00
5644ef5461
Fix check for AVX enablement
...
The AVX bit is set if the CPU supports AVX. But this doesn't mean the
kernel does. Add checks according to Intel's documentation.
2011-07-20 21:21:03 -04:00
6986b98a18
Force :a_x86_64_ymm to be 16-byte aligned
2011-07-20 14:20:00 -04:00
8002999481
Fix whitespaces
2011-07-19 17:27:09 -04:00
99710781cc
Improve 64 bit strcat functions with SSE2/SSSE3
2011-07-19 17:11:54 -04:00
ecaddd6699
Rebuild configure scripts
2011-07-06 21:29:02 -04:00
8912479f9e
Improved st{r,p}{,n}cpy for SSE2 and SSSE3 on x86-64
2011-06-24 15:14:22 -04:00
0b1cbaaef5
Optimized st{r,p}{,n}cpy for SSE2/SSSE3 on x86-32
2011-06-24 14:15:32 -04:00
42675c6ff0
Add an elf_ifunc_invoke interface so that architectures can implement
...
the ifunc resolver calls however they wish.
2011-06-20 19:56:40 -07:00
3d29045b5e
Assume Intel Core i3/i5/i7 processor if AVX is available
2011-06-03 07:01:25 -04:00
8db736347c
Fix typo in x86-64 powl
2011-05-18 19:50:48 -04:00
4c559bcdf3
Fix static linking with checking x86/x86-64 memcpy.
2011-04-17 22:20:47 -04:00
e6c6149412
Fix memory leak in TLS of loaded objects.
2011-04-10 22:43:01 -04:00
dedc7c7b05
Fix typo in cache information table for x86-{32,64}.
2011-04-03 09:32:31 -04:00
0354e35501
Work around old buggy program which cannot cope with memcpy semantics.
2011-04-01 19:38:21 -04:00
bb2420590c
Last change caused infinite loops because of missing loop increment.
2011-03-22 01:52:43 -04:00
c97a1282a4
Handle page boundaries in x86 SSE4.2 strncmp.
2011-03-21 05:35:38 -04:00
2a11560107
Implement x86 cpuid handling of leaf4 for cache information.
2011-03-20 08:14:30 -04:00
7e4ba49cd3
Enable SSE2 memset for AMD'supcoming Orochi processor.
...
This patch enables SSE2 memset for AMD's upcoming Orochi processor.
This patch also fixes the following bug:
For misaligned blocks larger than > 144 Bytes, memset branches into
the integer code path depending on the value of misalignment even if
the startup code chooses the SSE2 code path upfront, when multiarch
is enabled.
2011-03-04 23:30:08 -05:00
baa6c69a57
Work around empty line at end file generated by autoconf.
2011-02-17 01:26:07 -05:00
e943389325
Remove use of ranlib.
2011-02-15 14:52:29 -05:00
a0bf67cca2
Fix some warning nits.
2011-02-04 10:53:51 -08:00
f257bbd77d
Clean up some bits/select.h headers.
2011-01-09 16:49:17 -05:00
30950a5fd2
Make PowerPC64 default to nonexecutable stack
2010-12-19 22:49:01 -05:00
13b695749a
Support Intel processor model 6 and model 0x2.
2010-11-12 03:48:52 -05:00
8ca52c6e3b
Fix one exit path in x86-64 SSE4.2 str{,n}casecmp.
2010-11-10 03:05:37 -05:00
69da074d7a
Fix warnings in __bswap_16.
2010-11-10 02:38:35 -05:00
ff02d5280b
Use IFUNC on x86-64 memset
2010-11-08 03:41:34 -05:00
c0dde15b5d
32bit memset-sse2.S fails with uneven cache size
...
32bit memset-sse2.S assumes cache size is multiple of 128 bytes. If
it isn't true, memset-sse2.S will fail. For example, a processor can
have 24576 KB L3 cache and 20 cores. That is 2516582 byte per core. Half
of it is 1258291, which isn't helpful for vector instructions. This
patch rounds cache sizes to multiple of 256 bytes and adds "raw" cache
sizes.
2010-11-05 07:57:46 -04:00
dbf3a06904
Fix x86-64 strchr propagation of search byte into all bytes of SSE register
2010-10-25 14:13:17 -04:00
18edac4857
Provide FP_FAST_FMA{,F,L} definitions for x86/x86-64.
2010-10-19 12:56:42 -04:00
5e908464b9
Implement accurate fma.
2010-10-13 22:27:03 -04:00
9ff8d36f27
Correct implementation of fmaf.
2010-10-11 09:27:05 -04:00
45db99c7d0
Fix handling of tail bytes of buffer in SSE2/SSSE3 x86-64 version strn{,case}cmp
2010-10-03 22:10:30 -04:00
015a4c6193
Re-enable all strncasecmp versions.
2010-09-20 20:18:00 -07:00
8ffcee4a04
Fix limit detection in x86-64 SSE2 strncasecmp.
2010-09-20 14:02:23 -07:00
0959ffc97b
Update x86-64 mpn routines from GMP 5.0.1.
2010-09-02 23:36:25 -07:00
01d2601561
Fix typo in last commit.
2010-08-26 22:35:42 -07:00
9ea3de11f1
Move slow Atom code to separate section.
2010-08-26 22:17:03 -07:00
107b2fa56c
Shorten x86-64 strlen a bit.
2010-08-26 22:12:16 -07:00
623aac7f84
Unroll x86-64 strlen
2010-08-26 22:09:34 -07:00
b416a90085
Missing comma in last commit.
2010-08-26 13:18:46 -07:00
8b2b771538
Clean up warnings in new x86_64/multiarch code.
2010-08-25 12:13:08 -07:00
e73015f2d6
Unroll 32bit SSE strlen and handle slow bsf
2010-08-25 10:07:37 -07:00
1cdfe7242f
Add missing copyright year updated and pretty printing.
2010-08-24 11:42:19 -07:00
73f27d5e72
Clean up SSE variable shifts
2010-08-24 11:35:01 -07:00
9da4bb316f
Fix two typos in x86-64 SSE4.2 strncasecmp implementation.
2010-08-19 09:20:44 -07:00
1feccb6caf
Fix fourth parameter of SSE4.2 strcmp for x86-64.
2010-08-15 20:46:09 -07:00
28c90b2cf5
Use correct register for fourth parameter of x86-64 strncasecmp_l.
2010-08-15 17:42:12 -07:00
25244f174f
Undo inccorect change.
2010-08-15 10:34:33 -07:00
e9f82e0d1d
Add optimized strncasecmp versions for x86-64.
2010-08-14 22:04:01 -07:00
ca6bb004eb
Fix x86-64 build without multiarch.
2010-08-14 14:56:32 -07:00
d22e4cc939
x86: Add support for frame pointer less mcount
2010-08-07 21:24:05 -07:00
73507d3ae0
Add support for SSSE3 and SSE4.2 versions of strcasecmp on x86-64.
2010-07-31 21:41:09 -07:00
66f6765a47
Pretty printing x86-64 SSE4.3 strcmp.
2010-07-30 12:54:37 -07:00
42e08a5438
Implement optimized strcaecmp for x86-64.
2010-07-30 00:14:04 -07:00
fe36dd025e
Fix tolower operation in strcasestr.
2010-07-30 00:09:07 -07:00
880113d91e
Avoid compiling unneeded file in ld.so.
2010-07-27 21:12:59 -07:00
24fb0f88ed
Add optimized x86-64 implementation of strnlen.
...
While at it, beef up the test suite for strnlen and add performance
tests for it, too.
2010-07-26 08:37:08 -07:00
8e96b93aa7
Speed up x86-64 strcasestr a bit moew.
...
Using the new SSE4.2 instructions is cool but not really the fastest.
Some older SSE instructions can do the trick faster.
2010-07-24 08:34:44 -07:00
f6a31e0eb6
Add strcasestr-nonascii to i386 build
2010-07-21 07:26:18 -07:00
d02dc4ba08
Fix non-ASCII case of SSE4.2 strcasstr.
2010-07-16 16:00:22 -07:00
cc9f2e47a0
Speed up SSE4.2 strcasestr by avoiding indirect function call.
2010-07-16 15:37:38 -07:00
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
3c88fe1e3a
Incorrect x86 CPU family and model check.
2010-05-27 11:14:18 -07:00
94a27fabeb
Whitespace fix.
2010-04-14 22:29:51 -07:00
a11ec63713
Add x86-32 FMA support
2010-04-14 22:27:59 -07:00
df87f54923
Check DATA_CACHE_SIZE_HALF
2010-04-14 22:18:27 -07:00
dd37cd1a12
Optimie x86-64 SSE4 memcmp for unaligned data.
2010-04-14 17:53:44 -07:00
404a6e3201
x86-64 SSE4 optimized memcmp
...
This is 64bit SSE4 optimized memcmp. It improves memcmp by upto 3X
on Intel Core i7.
2010-04-14 00:12:53 -07:00
bbbdd77809
Update x86-64 cpu multiarch selection header.
2010-04-13 19:17:10 -07:00
22f4f44b67
Fix concurrent handling of __cpu_features.
2010-04-04 00:25:46 -07:00
7d9335ecd7
Don't define __strpbrk_sse42 in static library
2010-03-24 12:16:24 -07:00
e39acb1f16
Fix R_X86_64_PC32 overflow detection
2010-03-04 19:33:41 -08:00
4a1297d761
We can use the 64-bit register versions of the double functions.
2010-02-24 20:00:30 -08:00
7eb22e757e
Avoid PLT call to fegetenv on s390
2010-02-09 22:34:17 -08:00
f69190e74a
Prevent silent errors should x86-64 strncmp be needed outside libc.
2010-01-14 08:09:32 -08:00
5a7af22fbb
Unroll the loop x86-64 SSE4.2 strlen.
2010-01-13 07:51:48 -08:00
3af48cbdfa
Optimize 32bit memset/memcpy with SSE2/SSSE3.
2010-01-12 11:22:03 -08:00
2510d01ddb
Define bit_SSE2 and index_SSE2.
2009-12-13 15:23:02 -08:00
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
823bc6da65
Fix whitespaces.
2009-10-22 22:50:00 -07:00
001659f4d5
Implement SSE4.2 optimized strchr and strrchr.
2009-10-22 22:47:12 -07:00
b0f3a2e43f
Clean up unnecessary libc_hidden_builtin_def fiddling in x86 multiarch definitions.
2009-10-06 20:01:23 -07:00
9d6982d5d2
Clean up x86 multiarch HAS_FOO macros.
2009-10-06 19:59:03 -07:00
7967983fd4
configure tweaks, support $libc_add_on_config_subdirs
2009-09-15 14:14:42 -07:00
22bb992d51
Fix strstr/strcasestr/fma/fmaf on x86_64.
2009-09-02 19:43:04 -07:00
240441038f
Fix x86_64 bits/mathinline.h for -m32 compilation.
2009-09-01 15:30:12 -07:00
c2735e958a
Fix parse error in bits/mathinline.h with --std=c99
2009-08-31 17:26:14 +02:00
5a4eb7282e
Remove ENABLE_SSSE3_ON_ATOM.
...
It turns that SSSE3 isn't slow on Atom. The problem is bsf. This patch
removes ENABLE_SSSE3_ON_ATOM.
2009-08-28 14:54:46 -07:00
65b14bcee2
Optimize out duplicated scalbln code for x86-64.
2009-08-25 16:46:34 -07:00
7423a3456a
Optimized signbit{,f} for x86-64.
2009-08-25 14:54:12 -07:00
84088310ce
Handle AVX saving on x86-64 in interrupted smbol lookups.
...
If a signal arrived during a symbol lookup and the signal handler also
required a symbol lookup, the end of the lookup in the signal handler reset
the flag whether restoring AVX/SSE registers is needed. Resetting means
in this case that the tail part of the outer lookup code will try to
restore the registers and this can fail miserably. We now restore to the
previous value which makes nesting calls possible.
2009-08-25 10:42:30 -07:00
cf00cc00bc
Add ceil implementation for 64-bit machines.
...
On 64-bit machines we should not split doubles into two 32 bit
integer and handle the words separately. We have wide registers.
This patch implements a 64-bit ceil version. Ideally all other
functions will be converted over time.
2009-08-24 18:05:48 -07:00
9a1ea1525e
Optimize float construction/extraction on x86-64.
2009-08-24 14:52:49 -07:00
ef72d5f1b9
Optimize x86-64 signbit{,f} a bit.
2009-08-24 10:20:58 -07:00
4e1e2f4247
Support mixed SSE/AVX audit and check AVX only once.
...
This patch fixes mixed SSE/AVX audit and checks AVX only once in
_dl_runtime_profile. When an AVX or SSE register value in pltenter is
modified, we have to make sure that the SSE part value is the same in both
lr_xmm and lr_vector fields so that pltexit will get the correct value
from either lr_xmm or lr_vector fields. AVX-enabled pltenter should
update both lr_xmm and lr_vector fields to support stacked AVX/SSE
pltenter functions.
2009-08-08 10:54:42 -07:00
8e436522e1
Move SSE4.2 functions together.
2009-08-08 09:38:32 -07:00
0fda545d5f
Add SSSE3-optimized implementation of str{,n}cmp for x86-64.
2009-08-07 22:51:02 -07:00
57b378ac89
Avoid warning through fake initialization.
2009-08-07 16:19:54 -07:00
3aa2588d4a
Fix whitespaces in last checkin.
2009-08-07 09:47:12 -07:00
a546baa9cd
Properly count number of logical processors on Intel CPUs.
...
The meaning of the 25-14 bits in EAX returned from cpuid with EAX = 4
has been changed from "the maximum number of threads sharing the cache"
to "the maximum number of addressable IDs for logical processors sharing
the cache" if cpuid takes EAX = 11. We need to use results from both
EAX = 4 and EAX = 11 to get the number of threads sharing the cache.
The 25-14 bits in EAX on Core i7 is 15 although the number of logical
processors is 8. Here is a white paper on this:
http://software.intel.com/en-us/articles/intel-64-architecture-processor-topology-enumeration/
This patch correctly counts number of logical processors on Intel CPUs
with EAX = 11 support on cpuid. Tested on Dinnington, Core i7 and
Nehalem EX/EP.
It also fixed Pentium Ds workaround since EBX may not have the right
value returned from cpuid with EAX = 1.
2009-08-07 09:39:36 -07:00
Joseph Myers
Ulrich Drepper
Marek Polacek
Paul Eggert
Andreas Schwab
Marek Polacek
Liubov Dmitrieva
Rafael Ávila de Espíndola
Andreas Schwab
Petr Baudis
H.J. Lu
Liubov Dmitrieva
David S. Miller
Mike Frysinger
Harsha Jagasia
Roland McGrath
Ryan S. Arnold
Ulrich Drepper
Richard Li
Jakub Jelinek
Richard Henderson
Andi Kleen
Richard Guenther