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S390: Optimize strchr and wcschr.

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This patch provides optimized versions of strchr and wcschr with the z13
vector instructions.

ChangeLog:

	* sysdeps/s390/multiarch/strchr-c.c: New File.
	* sysdeps/s390/multiarch/strchr-vx.S: Likewise.
	* sysdeps/s390/multiarch/strchr.c: Likewise.
	* sysdeps/s390/multiarch/wcschr-c.c: Likewise.
	* sysdeps/s390/multiarch/wcschr-vx.S: Likewise.
	* sysdeps/s390/multiarch/wcschr.c: Likewise.
	* sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strchr and
	wcschr functions.
	* sysdeps/s390/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Add ifunc test for strchr, wcschr.
	* string/strchr.c (STRCHR): Define and use macro.
	* benchtests/bench-wcschr.c: New File.
	* benchtests/Makefile (wcsmbs-bench): Add wcschr.
This commit is contained in:
Stefan Liebler
2015-08-26 10:26:23 +02:00
committed by Andreas Krebbel
parent cee82e70cc
commit cf150d45a9
12 changed files with 376 additions and 5 deletions
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3
sysdeps/s390/multiarch/ifunc-impl-list.c
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@@ -109,6 +109,9 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_VX_IMPL (strncmp);
IFUNC_VX_IMPL (wcsncmp);
IFUNC_VX_IMPL (strchr);
IFUNC_VX_IMPL (wcschr);
#endif /* HAVE_S390_VX_ASM_SUPPORT */
return i;