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Fix Wundef warning for MEMCPY_OK_FOR_FWD_MEMMOVE 

Define MEMCPY_OK_FOR_FWD_MEMMOVE in memcopy.h and let arch-specific
implementations of that file override the value if necessary.  This
override is only useful for tile and moving this macro to memcopy.h
allows us to remove the tile-specific memmove.c.
This commit is contained in:
Siddhesh Poyarekar 2014-06-28 06:05:24 +05:30
parent f1eafb41fa
commit 64df73c2ea
4 changed files with 14 additions and 22 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2014-06-28 Siddhesh Poyarekar <siddhesh@redhat.com>
* sysdeps/generic/memcopy.h: Define MEMCPY_OK_FOR_FWD_MEMMOVE.
* sysdeps/tile/memcopy.h: Redefine MEMCPY_OK_FOR_FWD_MEMMOVE.
* sysdeps/tile/tilegx/memmove.c: Remove file.
2014-06-27 Joseph Myers <joseph@codesourcery.com>
* Makeconfig ($(common-objpfx)soversions.mk): Do not generate

2
sysdeps/generic/memcopy.h
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@ -148,4 +148,6 @@ extern void _wordcopy_bwd_dest_aligned (long int, long int, size_t) __THROW;
/* Threshold value for when to enter the unrolled loops. */
#define OP_T_THRES 16
#define MEMCPY_OK_FOR_FWD_MEMMOVE 0
#endif /* memcopy.h */

6
sysdeps/tile/memcopy.h
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@ -19,6 +19,12 @@
#include <sysdeps/generic/memcopy.h>
#include <bits/wordsize.h>
/* The tilegx implementation of memcpy is safe to use for memmove. */
#ifdef __tilegx__
# undef MEMCPY_OK_FOR_FWD_MEMMOVE
# define MEMCPY_OK_FOR_FWD_MEMMOVE 1
#endif
/* Support more efficient copying on tilegx32, which supports
long long as a native 64-bit type. */
#if defined (__tilegx__) && __WORDSIZE == 32

22
sysdeps/tile/tilegx/memmove.c
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@ -1,22 +0,0 @@
/* Copy memory to memory until the specified number of bytes
has been copied. Overlap is handled correctly.
Copyright (C) 2012-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
/* The tilegx implementation of memcpy is safe to use for memmove. */
#define MEMCPY_OK_FOR_FWD_MEMMOVE 1
#include <string/memmove.c>