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authorStefan Liebler <stli@linux.vnet.ibm.com>2015-08-26 10:26:24 +0200
committerAndreas Krebbel <krebbel@linux.vnet.ibm.com>2015-08-26 10:26:24 +0200
commit88eefd344b3cf4a41284a1dfdaca61667e3a1b4b (patch)
treee6df6d058a7fe251cadaed11918374df46ca7bb9 /sysdeps/s390/s390-32
parentb4c21601b147efc3c2b0e679e4ffc554b3987f0b (diff)
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S390: Optimize memchr, rawmemchr and wmemchr.
This patch provides optimized versions of memchr, rawmemchr and wmemchr with the
z13 vector instructions.

ChangeLog:

	* sysdeps/s390/multiarch/memchr-vx.S: New File.
	* sysdeps/s390/multiarch/memchr.c: Likewise.
	* sysdeps/s390/multiarch/rawmemchr-c.c: Likewise.
	* sysdeps/s390/multiarch/rawmemchr-vx.S: Likewise.
	* sysdeps/s390/multiarch/rawmemchr.c: Likewise.
	* sysdeps/s390/multiarch/wmemchr-c.c: Likewise.
	* sysdeps/s390/multiarch/wmemchr-vx.S: Likewise.
	* sysdeps/s390/multiarch/wmemchr.c: Likewise.
	* sysdeps/s390/s390-32/multiarch/memchr.c: Likewise.
	* sysdeps/s390/s390-64/multiarch/memchr.c: Likewise.
	* sysdeps/s390/multiarch/Makefile (sysdep_routines): Add memchr, wmemchr
	and rawmemchr functions.
	* sysdeps/s390/multiarch/ifunc-impl-list-common.c
	(__libc_ifunc_impl_list_common): Add ifunc test for memchr, rawmemchr
	and wmemchr.
	* wcsmbs/wmemchr.c: Use WMEMCHR if defined.
	* string/test-memchr.c: Add wmemchr support.
	* wcsmbs/test-wmemchr.c: New File.
	* wcsmbs/Makefile (strop-tests): Add wmemchr.
	* benchtests/bench-memchr.c: Add wmemchr support.
	* benchtests/bench-wmemchr.c: New File.
	* benchtests/Makefile (wcsmbs-bench): wmemchr.
Diffstat (limited to 'sysdeps/s390/s390-32')
-rw-r--r--sysdeps/s390/s390-32/multiarch/memchr.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/sysdeps/s390/s390-32/multiarch/memchr.c b/sysdeps/s390/s390-32/multiarch/memchr.c
new file mode 100644
index 0000000000..00958cd039
--- /dev/null
+++ b/sysdeps/s390/s390-32/multiarch/memchr.c
@@ -0,0 +1,21 @@
+/* Multiple versions of memchr.
+   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/>.  */
+
+/* This wrapper-file is needed, because otherwise file
+   sysdeps/s390/s390-[32|64]/memchr.S will be used.  */
+#include <sysdeps/s390/multiarch/memchr.c>