summary refs log tree commit diff
path: root/benchtests
diff options
context:
space:
mode:
authorStefan Liebler <stli@linux.vnet.ibm.com>2015-08-26 10:26:20 +0200
committerAndreas Krebbel <krebbel@linux.vnet.ibm.com>2015-08-26 10:26:20 +0200
commit9472f35a0a6dbbda82ce103aaf0f5013f5d46e34 (patch)
treef987642b36af4e740bbd7e80e218f526af5a230d /benchtests
parentfd484e057dd4d2813182df08584a4c48d6f1dd7a (diff)
downloadglibc-9472f35a0a6dbbda82ce103aaf0f5013f5d46e34.tar.gz
glibc-9472f35a0a6dbbda82ce103aaf0f5013f5d46e34.tar.xz
glibc-9472f35a0a6dbbda82ce103aaf0f5013f5d46e34.zip
S390: Optimize strlen and wcslen.
This patch provides optimized versions of strlen and wcslen with the z13 vector
instructions.
The helper macro IFUNC_VX_IMPL is introduced and is used to register all
__<func>_c() and __<func>_vx() functions within __libc_ifunc_impl_list()
to the ifunc test framework.

ChangeLog:

	* sysdeps/s390/multiarch/Makefile: New File.
	* sysdeps/s390/multiarch/strlen-c.c: Likewise.
	* sysdeps/s390/multiarch/strlen-vx.S: Likewise.
	* sysdeps/s390/multiarch/strlen.c: Likewise.
	* sysdeps/s390/multiarch/wcslen-c.c: Likewise.
	* sysdeps/s390/multiarch/wcslen-vx.S: Likewise.
	* sysdeps/s390/multiarch/wcslen.c: Likewise.
	* string/strlen.c (STRLEN): Define and use macro.
	* sysdeps/s390/multiarch/ifunc-impl-list.c
	(IFUNC_VX_IMPL): New macro function.
	(__libc_ifunc_impl_list): Add ifunc test for strlen, wcslen.
	* benchtests/Makefile (wcsmbs-bench): New variable.
	(string-bench-all): Added wcsmbs-bench.
	* benchtests/bench-wcslen.c: New File.
Diffstat (limited to 'benchtests')
-rw-r--r--benchtests/Makefile3
-rw-r--r--benchtests/bench-wcslen.c20
2 files changed, 22 insertions, 1 deletions
diff --git a/benchtests/Makefile b/benchtests/Makefile
index 8e615e50d6..5d4afabc52 100644
--- a/benchtests/Makefile
+++ b/benchtests/Makefile
@@ -36,7 +36,8 @@ 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
-string-bench-all := $(string-bench)
+wcsmbs-bench := wcslen
+string-bench-all := $(string-bench) ${wcsmbs-bench}
 
 # We have to generate locales
 LOCALES := en_US.UTF-8 tr_TR.UTF-8 cs_CZ.UTF-8 fa_IR.UTF-8 fr_FR.UTF-8 \
diff --git a/benchtests/bench-wcslen.c b/benchtests/bench-wcslen.c
new file mode 100644
index 0000000000..4e9d0856fd
--- /dev/null
+++ b/benchtests/bench-wcslen.c
@@ -0,0 +1,20 @@
+/* Measure wcslen 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-strlen.c"