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d626a24f23
This patch provides optimized versions of strcat and wcscat with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/strcat-c.c: New File. * sysdeps/s390/multiarch/strcat-vx.S: Likewise. * sysdeps/s390/multiarch/strcat.c: Likewise. * sysdeps/s390/multiarch/wcscat-c.c: Likewise. * sysdeps/s390/multiarch/wcscat-vx.S: Likewise. * sysdeps/s390/multiarch/wcscat.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strcat and wcscat functions. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add ifunc test for strcat, wcscat. * string/strcat.c (STRCAT): Define and use macro. * wcsmbs/wcscat.c: Use WCSCAT if defined. * string/test-strcat.c: Add wcscat support. * wcsmbs/test-wcscat.c: New File. * wcsmbs/Makefile (strop-tests): Add wcscat. * benchtests/bench-strcat.c: Add wcscat support. * benchtests/bench-wcscat.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wcscat.
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/* Copyright (C) 1995-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <wchar.h>
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#ifdef WCSCAT
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# define __wcscat WCSCAT
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#endif
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/* Append SRC on the end of DEST. */
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wchar_t *
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__wcscat (dest, src)
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wchar_t *dest;
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const wchar_t *src;
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{
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wchar_t *s1 = dest;
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const wchar_t *s2 = src;
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wchar_t c;
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/* Find the end of the string. */
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do
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c = *s1++;
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while (c != L'\0');
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/* Make S1 point before the next character, so we can increment
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it while memory is read (wins on pipelined cpus). */
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s1 -= 2;
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do
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{
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c = *s2++;
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*++s1 = c;
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}
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while (c != L'\0');
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return dest;
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}
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#ifndef WCSCAT
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weak_alias (__wcscat, wcscat)
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#endif
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