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b3a0c176d1
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.
79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
/* Measure stpncpy functions.
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Copyright (C) 2013-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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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#define STRNCPY_RESULT(dst, len, n) ((dst) + ((len) > (n) ? (n) : (len)))
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#define TEST_MAIN
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#ifndef WIDE
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# define TEST_NAME "stpncpy"
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#else
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# define TEST_NAME "wcpncpy"
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#endif /* WIDE */
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#include "bench-string.h"
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#ifndef WIDE
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# define CHAR char
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# define SIMPLE_STPNCPY simple_stpncpy
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# define STUPID_STPNCPY stupid_stpncpy
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# define STPNCPY stpncpy
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# define STRNLEN strnlen
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#else
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# include <wchar.h>
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# define CHAR wchar_t
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# define SIMPLE_STPNCPY simple_wcpncpy
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# define STUPID_STPNCPY stupid_wcpncpy
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# define STPNCPY wcpncpy
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# define STRNLEN wcsnlen
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#endif /* WIDE */
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CHAR *SIMPLE_STPNCPY (CHAR *, const CHAR *, size_t);
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CHAR *STUPID_STPNCPY (CHAR *, const CHAR *, size_t);
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IMPL (STUPID_STPNCPY, 0)
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IMPL (SIMPLE_STPNCPY, 0)
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IMPL (STPNCPY, 1)
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CHAR *
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SIMPLE_STPNCPY (CHAR *dst, const CHAR *src, size_t n)
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{
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while (n--)
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if ((*dst++ = *src++) == '\0')
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{
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size_t i;
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for (i = 0; i < n; ++i)
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dst[i] = '\0';
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return dst - 1;
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}
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return dst;
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}
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CHAR *
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STUPID_STPNCPY (CHAR *dst, const CHAR *src, size_t n)
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{
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size_t nc = STRNLEN (src, n);
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size_t i;
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for (i = 0; i < nc; ++i)
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dst[i] = src[i];
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for (; i < n; ++i)
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dst[i] = '\0';
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return dst + nc;
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}
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#undef CHAR
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#include "bench-strncpy.c"
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