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authorStefan Liebler <stli@linux.vnet.ibm.com>2015-08-26 10:26:21 +0200
committerAndreas Krebbel <krebbel@linux.vnet.ibm.com>2015-08-26 10:26:21 +0200
commitb3a0c176d1185621c4dd2bb3a51ec961bdb29123 (patch)
treef8eebf88cc8fc83747864ac8c3d2bdc174db84f2 /benchtests
parentd183b96ee6dc694e95f212c9272a178163351b19 (diff)
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S390: Optimize stpncpy and wcpncpy.
This patch provides optimized versions of stpncpy and wcpncpy with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/stpncpy-c.c: New File. * sysdeps/s390/multiarch/stpncpy-vx.S: Likewise. * sysdeps/s390/multiarch/stpncpy.c: Likewise. * sysdeps/s390/multiarch/wcpncpy-c.c: Likewise. * sysdeps/s390/multiarch/wcpncpy-vx.S: Likewise. * sysdeps/s390/multiarch/wcpncpy.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add stpncpy and wcpncpy functions. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add ifunc test for stpncpy, wcpncpy. * wcsmbs/wcpncpy.c: Use WCPNCPY if defined. * string/test-stpncpy.c: Add wcpncpy support. * wcsmbs/test-wcpncpy.c: New File. * wcsmbs/Makefile (strop-tests): Add wcpncpy. * benchtests/bench-stpncpy.c: Add wcpncpy support. * benchtests/bench-wcpncpy.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wcpncpy.
Diffstat (limited to 'benchtests')
-rw-r--r--benchtests/Makefile2
-rw-r--r--benchtests/bench-stpncpy.c41
-rw-r--r--benchtests/bench-wcpncpy.c20
3 files changed, 51 insertions, 12 deletions
diff --git a/benchtests/Makefile b/benchtests/Makefile
index 3785328..c3531a9 100644
--- a/benchtests/Makefile
+++ b/benchtests/Makefile
@@ -36,7 +36,7 @@ string-bench := bcopy bzero memccpy memchr memcmp memcpy memmem memmove \
strncasecmp strncat strncmp strncpy strnlen strpbrk strrchr \
strspn strstr strcpy_chk stpcpy_chk memrchr strsep strtok \
strcoll
-wcsmbs-bench := wcslen wcsnlen wcscpy wcpcpy wcsncpy
+wcsmbs-bench := wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy
string-bench-all := $(string-bench) ${wcsmbs-bench}
# We have to generate locales
diff --git a/benchtests/bench-stpncpy.c b/benchtests/bench-stpncpy.c
index 53539c7..822db1f 100644
--- a/benchtests/bench-stpncpy.c
+++ b/benchtests/bench-stpncpy.c
@@ -18,18 +18,36 @@
#define STRNCPY_RESULT(dst, len, n) ((dst) + ((len) > (n) ? (n) : (len)))
#define TEST_MAIN
-#define TEST_NAME "stpncpy"
+#ifndef WIDE
+# define TEST_NAME "stpncpy"
+#else
+# define TEST_NAME "wcpncpy"
+#endif /* WIDE */
#include "bench-string.h"
+#ifndef WIDE
+# define CHAR char
+# define SIMPLE_STPNCPY simple_stpncpy
+# define STUPID_STPNCPY stupid_stpncpy
+# define STPNCPY stpncpy
+# define STRNLEN strnlen
+#else
+# include <wchar.h>
+# define CHAR wchar_t
+# define SIMPLE_STPNCPY simple_wcpncpy
+# define STUPID_STPNCPY stupid_wcpncpy
+# define STPNCPY wcpncpy
+# define STRNLEN wcsnlen
+#endif /* WIDE */
-char *simple_stpncpy (char *, const char *, size_t);
-char *stupid_stpncpy (char *, const char *, size_t);
+CHAR *SIMPLE_STPNCPY (CHAR *, const CHAR *, size_t);
+CHAR *STUPID_STPNCPY (CHAR *, const CHAR *, size_t);
-IMPL (stupid_stpncpy, 0)
-IMPL (simple_stpncpy, 0)
-IMPL (stpncpy, 1)
+IMPL (STUPID_STPNCPY, 0)
+IMPL (SIMPLE_STPNCPY, 0)
+IMPL (STPNCPY, 1)
-char *
-simple_stpncpy (char *dst, const char *src, size_t n)
+CHAR *
+SIMPLE_STPNCPY (CHAR *dst, const CHAR *src, size_t n)
{
while (n--)
if ((*dst++ = *src++) == '\0')
@@ -43,10 +61,10 @@ simple_stpncpy (char *dst, const char *src, size_t n)
return dst;
}
-char *
-stupid_stpncpy (char *dst, const char *src, size_t n)
+CHAR *
+STUPID_STPNCPY (CHAR *dst, const CHAR *src, size_t n)
{
- size_t nc = strnlen (src, n);
+ size_t nc = STRNLEN (src, n);
size_t i;
for (i = 0; i < nc; ++i)
@@ -56,4 +74,5 @@ stupid_stpncpy (char *dst, const char *src, size_t n)
return dst + nc;
}
+#undef CHAR
#include "bench-strncpy.c"
diff --git a/benchtests/bench-wcpncpy.c b/benchtests/bench-wcpncpy.c
new file mode 100644
index 0000000..8aa529e
--- /dev/null
+++ b/benchtests/bench-wcpncpy.c
@@ -0,0 +1,20 @@
+/* Measure wcpncpy functions.
+ Copyright (C) 2015 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#define WIDE 1
+#include "bench-stpncpy.c"