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f360f94a05
The optimization is achieved by following techniques:
> data alignment [gain from aligned memory access on read/write]
> POWER7 gains performance with loop unrolling/unwinding
[gain by reduction of branch penalty].
> zero padding done by calling optimized memset
25 lines
1014 B
ArmAsm
25 lines
1014 B
ArmAsm
/* Optimized stpncpy implementation for PowerPC64/POWER7.
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Copyright (C) 2014 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 USE_AS_STPNCPY
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#include <sysdeps/powerpc/powerpc64/power7/strncpy.S>
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weak_alias (__stpncpy, stpncpy)
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libc_hidden_def (__stpncpy)
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libc_hidden_builtin_def (stpncpy)
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