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authorStefan Liebler <stli@linux.vnet.ibm.com>2015-08-26 10:26:22 +0200
committerAndreas Krebbel <krebbel@linux.vnet.ibm.com>2015-08-26 10:26:22 +0200
commit63724a6db60f98e91da474d11d83a19aa10fc54e (patch)
tree50fc60c0309d220ced0d3ed9d32d6b853c11080d /string
parente1fe91180e4e29549f35f8ecd705b0bb4f208606 (diff)
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S390: Optimize strcmp and wcscmp.
This patch provides optimized versions of strcmp and wcscmp with the z13
vector instructions.

The architecture specific string.h had a typo, which leads to ommiting the
inline version in this file if __USE_STRING_INLINES is defined.
Tested this inline version by tweaking test-strcmp.c.

ChangeLog:

	* sysdeps/s390/multiarch/strcmp-vx.S: New File.
	* sysdeps/s390/multiarch/strcmp.c: Likewise.
	* sysdeps/s390/multiarch/wcscmp-c.c: Likewise.
	* sysdeps/s390/multiarch/wcscmp-vx.S: Likewise.
	* sysdeps/s390/multiarch/wcscmp.c: Likewise.
	* sysdeps/s390/s390-32/multiarch/strcmp.c: Likewise.
	* sysdeps/s390/s390-64/multiarch/strcmp.c: Likewise.
	* sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strcmp and
	wcscmp functions.
	* sysdeps/s390/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Add ifunc test for strcmp, wcscmp.
	* string/strcmp.c (STRCMP): Define and use macro.
	* benchtests/bench-wcscmp.c: New File.
	* benchtests/Makefile (wcsmbs-bench): Add wcscmp.
	* sysdeps/s390/bits/string.h: Fix typo: _HAVE_STRING_ARCH_strcmp
	instead of _HAVE_STRING_ARCH_memchr.
Diffstat (limited to 'string')
-rw-r--r--string/strcmp.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/string/strcmp.c b/string/strcmp.c
index 4d4c044660..bf5cf5bd72 100644
--- a/string/strcmp.c
+++ b/string/strcmp.c
@@ -19,11 +19,15 @@
 
 #undef strcmp
 
+#ifndef STRCMP
+# define STRCMP strcmp
+#endif
+
 /* Compare S1 and S2, returning less than, equal to or
    greater than zero if S1 is lexicographically less than,
    equal to or greater than S2.  */
 int
-strcmp (const char *p1, const char *p2)
+STRCMP (const char *p1, const char *p2)
 {
   const unsigned char *s1 = (const unsigned char *) p1;
   const unsigned char *s2 = (const unsigned char *) p2;