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e413b14e18
This patch optimizes strcasestr function for power >= 8 systems. The average improvement of this optimization is ~40% and compares 16 bytes at a time using vector instructions. This patch is tested on powerpc64 and powerpc64le.
30 lines
1.1 KiB
C
30 lines
1.1 KiB
C
/* Optimized strcasestr implementation for PowerPC64/POWER8.
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Copyright (C) 2016 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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#include <string.h>
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#define STRCASESTR __strcasestr_ppc
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#undef libc_hidden_builtin_def
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#define libc_hidden_builtin_def(__name)
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#undef weak_alias
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#define weak_alias(a,b)
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extern __typeof (strcasestr) __strcasestr_ppc attribute_hidden;
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#include <string/strcasestr.c>
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