Wilco Dijkstra
3ae725dfb6
Improve strstr performance
...
Improve strstr performance. Strstr tends to be slow because it uses
many calls to memchr and a slow byte loop to scan for the next match.
Performance is significantly improved by using strnlen on larger blocks
and using strchr to search for the next matching character. strcasestr
can also use strnlen to scan ahead, and memmem can use memchr to check
for the next match.
On the GLIBC bench tests the performance gains on Cortex-A72 are:
strstr: +25%
strcasestr: +4.3%
memmem: +18%
On a 256KB dataset strstr performance improves by 67%, strcasestr by 47%.
Reviewd-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2018-07-16 17:51:52 +01:00
Joseph Myers
688903eb3e
Update copyright dates with scripts/update-copyrights.
...
* All files with FSF copyright notices: Update copyright dates
using scripts/update-copyrights.
* locale/programs/charmap-kw.h: Regenerated.
* locale/programs/locfile-kw.h: Likewise.
2018-01-01 00:32:25 +00:00
Wainer dos Santos Moschetta
fb82116f24
Update string tests to use the support test driver.
...
Replaced all imports of test-skeleton.c with support/test-driver.c.
In some cases it was needed to adjust do_test to return int
instead of static int since that is the method's signature expected by
test-driver.c.
Checked on x86_64.
* string/test-string.h (TEST_FUNCTION): Use test_main instead of
test_main ().
(CMDLINE_PROCESS): Use function instead of defined macro.
* debug/test-strcpy_chk.c: Import support/test-driver.c and also
<suppport/support.h> to use set_fortify_handler().
* string/bug-envz1.c: Import support/test-driver.c instead of
test-skeleton.c.
* string/bug-strcoll2.c: Likewise.
* string/bug-strtok1.c: Likewise.
* string/stratcliff.c: Likewise.
* string/test-ffs.c: Likewise.
* string/test-memccpy.c: Likewise.
* string/test-memchr.c: Likewise.
* string/test-memcmp.c: Likewise.
* string/test-memcpy.c: Likewise.
* string/test-memmem.c: Likewise.
* string/test-memmove.c: Likewise.
* string/test-memrchr.c: Likewise.
* string/test-memset.c: Likewise.
* string/test-rawmemchr.c: Likewise.
* string/test-strcasecmp.c: Likewise.
* string/test-strcasestr.c: Likewise.
* string/test-strcat.c: Likewise.
* string/test-strchr.c: Likewise.
* string/test-strcmp.c: Likewise.
* string/test-strcpy.c: Likewise.
* string/test-string.h: Likewise.
* string/test-strlen.c: Likewise.
* string/test-strncasecmp.c: Likewise.
* string/test-strncat.c: Likewise.
* string/test-strncmp.c: Likewise.
* string/test-strncpy.c: Likewise.
* string/test-strnlen.c: Likewise.
* string/test-strpbrk.c: Likewise.
* string/test-strrchr.c: Likewise.
* string/test-strspn.c: Likewise.
* string/test-strstr.c: Likewise.
* string/tst-bswap.c: Likewise.
* string/tst-cmp.c: Likewise.
* string/tst-endian.c: Likewise.
* string/tst-inlcall.c: Likewise.
* string/tst-strcoll-overflow.c: Likewise.
* string/tst-strfry.c: Likewise.
* string/tst-strlen.c: Likewise.
* string/tst-strtok.c: Likewise.
* string/tst-strtok_r.c: Likewise.
* string/tst-strxfrm.c: Likewise.
* string/tst-strxfrm2.c: Likewise.
* string/tst-svc.c: Likewise.
* string/tst-svc2.c: Likewise.
2017-03-23 11:32:29 -03:00
Joseph Myers
bfff8b1bec
Update copyright dates with scripts/update-copyrights.
2017-01-01 00:14:16 +00:00
Joseph Myers
f7a9f785e5
Update copyright dates with scripts/update-copyrights.
2016-01-04 16:05:18 +00:00
Joseph Myers
b168057aaa
Update copyright dates with scripts/update-copyrights.
2015-01-02 16:29:47 +00:00
Allan McRae
d4697bc93d
Update copyright notices with scripts/update-copyrights
2014-01-01 22:00:23 +10:00
Siddhesh Poyarekar
fec799f823
Remove performance-related bits from string tests
2013-06-11 15:08:13 +05:30
Joseph Myers
568035b787
Update copyright notices with scripts/update-copyrights.
2013-01-02 19:05:09 +00:00
H.J. Lu
69f07e5fd1
Add string IFUNC tests
2012-10-19 22:10:16 -07:00
H.J. Lu
03759f47db
Test strcasestr/strchr/strstr under all implementations
2012-10-05 13:32:07 -07:00
Paul Eggert
59ba27a63a
Replace FSF snail mail address with URLs.
2012-02-09 23:18:22 +00:00
Ulrich Drepper
fe36dd025e
Fix tolower operation in strcasestr.
2010-07-30 00:09:07 -07:00
Ulrich Drepper
dbc676d4ff
Add performance tests for strstr and strcasestr.
2010-07-23 22:27:53 -07:00
