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S390: Optimize strrchr and wcsrchr.

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This patch provides optimized versions of strrchr and wcsrchr with the z13
vector instructions.

ChangeLog:

	* sysdeps/s390/multiarch/strrchr-c.c: New File.
	* sysdeps/s390/multiarch/strrchr-vx.S: Likewise.
	* sysdeps/s390/multiarch/strrchr.c: Likewise.
	* sysdeps/s390/multiarch/wcsrchr-c.c: Likewise.
	* sysdeps/s390/multiarch/wcsrchr-vx.S: Likewise.
	* sysdeps/s390/multiarch/wcsrchr.c: Likewise.
	* sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strrchr and
	wcsrchr functions.
	* sysdeps/s390/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Add ifunc test for strrchr, wcsrchr.
	* benchtests/bench-wcsrchr.c: New File.
	* benchtests/Makefile (wcsmbs-bench): Add wcsrchr.
This commit is contained in:
Stefan Liebler
2015-08-26 10:26:23 +02:00
committed by Andreas Krebbel
parent d23d4ef19f
commit f40132d4bd
11 changed files with 522 additions and 3 deletions
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3
sysdeps/s390/multiarch/ifunc-impl-list.c
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@@ -115,6 +115,9 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_VX_IMPL (strchrnul);
IFUNC_VX_IMPL (wcschrnul);
IFUNC_VX_IMPL (strrchr);
IFUNC_VX_IMPL (wcsrchr);
#endif /* HAVE_S390_VX_ASM_SUPPORT */
return i;