From d183b96ee6dc694e95f212c9272a178163351b19 Mon Sep 17 00:00:00 2001
From: Stefan Liebler <stli@linux.vnet.ibm.com>
Date: Wed, 26 Aug 2015 10:26:21 +0200
Subject: S390: Optimize strncpy and wcsncpy.

This patch provides optimized versions of strncpy and wcsncpy with the z13
vector instructions.

ChangeLog:

	* sysdeps/s390/multiarch/strncpy-vx.S: New File.
	* sysdeps/s390/multiarch/strncpy.c: Likewise.
	* sysdeps/s390/multiarch/wcsncpy-c.c: Likewise.
	* sysdeps/s390/multiarch/wcsncpy-vx.S: Likewise.
	* sysdeps/s390/multiarch/wcsncpy.c: Likewise.
	* sysdeps/s390/s390-32/multiarch/strncpy.c: Likewise.
	* sysdeps/s390/s390-64/multiarch/strncpy.c: Likewise.
	* sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strncpy and
	wcsncpy functions.
	* wcsmbs/wcsncpy.c: Use WCSNCPY if defined.
	* sysdeps/s390/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Add ifunc test for strncpy, wcsncpy.
	* string/test-strncpy.c: Add wcsncpy support.
	* wcsmbs/test-wcsncpy.c: New File.
	* wcsmbs/Makefile (strop-tests): Add wcsncpy.
	* benchtests/bench-strncpy.c: Add wcsncpy support.
	* benchtests/bench-wcsncpy.c: New File.
	* benchtests/Makefile (wcsmbs-bench): Add wcsncpy
---
 wcsmbs/wcsncpy.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'wcsmbs/wcsncpy.c')

diff --git a/wcsmbs/wcsncpy.c b/wcsmbs/wcsncpy.c
index 7016f41..5ee5ee6 100644
--- a/wcsmbs/wcsncpy.c
+++ b/wcsmbs/wcsncpy.c
@@ -18,6 +18,9 @@
 
 #include <wchar.h>
 
+#ifdef WCSNCPY
+# define __wcsncpy WCSNCPY
+#endif
 
 /* Copy no more than N wide-characters of SRC to DEST.	*/
 wchar_t *
@@ -83,4 +86,6 @@ __wcsncpy (dest, src, n)
 
   return s;
 }
+#ifndef WCSNCPY
 weak_alias (__wcsncpy, wcsncpy)
+#endif
-- 
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