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Use memcpy in memmove when possible

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This commit is contained in:
Maxim Kuvyrkov
2012-11-06 17:47:55 -08:00
parent c5f4572124
commit 19218757e6
4 changed files with 36 additions and 1 deletions
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6
string/memmove.c
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@ -1,6 +1,6 @@
/* Copy memory to memory until the specified number of bytes
has been copied. Overlap is handled correctly.
Copyright (C) 1991, 1995, 1996, 1997, 2003 Free Software Foundation, Inc.
Copyright (C) 1991-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Torbjorn Granlund (tege@sics.se).
@ -55,6 +55,9 @@ MEMMOVE (a1, a2, len)
{
/* Copy from the beginning to the end. */
#if MEMCPY_OK_FOR_FWD_MEMMOVE
dest = memcpy (dest, src, len);
#else
/* If there not too few bytes to copy, use word copy. */
if (len >= OP_T_THRES)
{
@ -79,6 +82,7 @@ MEMMOVE (a1, a2, len)
/* There are just a few bytes to copy. Use byte memory operations. */
BYTE_COPY_FWD (dstp, srcp, len);
#endif /* MEMCPY_OK_FOR_FWD_MEMMOVE */
}
else
{