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| author |   Stefan Liebler <stli@linux.vnet.ibm.com> | 2015-08-26 10:26:20 +0200 |
|---|---|---|
| committer |   Andreas Krebbel <krebbel@linux.vnet.ibm.com> | 2015-08-26 10:26:20 +0200 |
| commit | 9472f35a0a6dbbda82ce103aaf0f5013f5d46e34 (patch) | |
| tree | f987642b36af4e740bbd7e80e218f526af5a230d /string | |
| parent | S390: Ifunc resolver macro for vector instructions. (diff) | |
| download | glibc-9472f35a0a6dbbda82ce103aaf0f5013f5d46e34.tar.gz glibc-9472f35a0a6dbbda82ce103aaf0f5013f5d46e34.tar.bz2 glibc-9472f35a0a6dbbda82ce103aaf0f5013f5d46e34.zip | |
S390: Optimize strlen and wcslen.
This patch provides optimized versions of strlen and wcslen with the z13 vector
instructions.
The helper macro IFUNC_VX_IMPL is introduced and is used to register all
__<func>_c() and __<func>_vx() functions within __libc_ifunc_impl_list()
to the ifunc test framework.
ChangeLog:
* sysdeps/s390/multiarch/Makefile: New File.
* sysdeps/s390/multiarch/strlen-c.c: Likewise.
* sysdeps/s390/multiarch/strlen-vx.S: Likewise.
* sysdeps/s390/multiarch/strlen.c: Likewise.
* sysdeps/s390/multiarch/wcslen-c.c: Likewise.
* sysdeps/s390/multiarch/wcslen-vx.S: Likewise.
* sysdeps/s390/multiarch/wcslen.c: Likewise.
* string/strlen.c (STRLEN): Define and use macro.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(IFUNC_VX_IMPL): New macro function.
(__libc_ifunc_impl_list): Add ifunc test for strlen, wcslen.
* benchtests/Makefile (wcsmbs-bench): New variable.
(string-bench-all): Added wcsmbs-bench.
* benchtests/bench-wcslen.c: New File.
Diffstat (limited to 'string')
| -rw-r--r-- | string/strlen.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/string/strlen.c b/string/strlen.c index d066bde577..b7fd645429 100644 --- a/string/strlen.c +++ b/string/strlen.c @@ -23,10 +23,14 @@ #undef strlen +#ifndef STRLEN +# define STRLEN strlen +#endif + /* Return the length of the null-terminated string STR. Scan for the null terminator quickly by testing four bytes at a time. */ size_t -strlen (const char *str) +STRLEN (const char *str) { const char *char_ptr; const unsigned long int *longword_ptr; |