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PowerPC: optimized memmove for POWER7/PPC32

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This patch adds a optimized memmove for power7 by using the optimized
power7 memcpy for forward copying.
This commit is contained in:
Adhemerval Zanella 2014-06-24 08:47:52 -05:00
parent 17762f6625
commit 07aedd78b0
5 changed files with 109 additions and 1 deletions
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9
ChangeLog
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@ -1,5 +1,14 @@
2014-07-07 Adhemerval Zanella <azanella@linux.vnet.ibm.com>
* sysdeps/powerpc/powerpc32/power4/multiarch/Makefile: Add memmove
multiarch objects.
* sysdeps/powerpc/powerpc32/power4/multiarch/memmove-power7.c: New
file: multiarch power7 memmove.
* sysdeps/powerpc/powerpc32/power4/multiarch/memmove-ppc.c: New file:
multiarch default memmove.
* sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c: New file:
multiarch memove for powerpc32/power4.
* string/bcopy.c: Use full path to include memmove.c.
* sysdeps/powerpc/powerpc64/multiarch/Makefile: Add memmove and bcopy
multiarch objects.

2
sysdeps/powerpc/powerpc32/power4/multiarch/Makefile
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@ -11,7 +11,7 @@ sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \
strchr-power7 strchr-ppc32 wcschr-power7 wcschr-power6 \
wcschr-ppc32 wcsrchr-power7 wcsrchr-power6 wcsrchr-ppc32 \
wcscpy-power7 wcscpy-power6 wcscpy-ppc32 wordcopy-power7 \
wordcopy-power6 wordcopy-ppc32
wordcopy-power6 wordcopy-ppc32 memmove-power7 memmove-ppc
CFLAGS-strncase-power7.c += -mcpu=power7 -funroll-loops
CFLAGS-strncase_l-power7.c += -mcpu=power7 -funroll-loops

31
sysdeps/powerpc/powerpc32/power4/multiarch/memmove-power7.c Normal file
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@ -0,0 +1,31 @@
/* Power7 multiarch memmove.
Copyright (C) 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; see the file COPYING.LIB. If
not, see <http://www.gnu.org/licenses/>. */
#include <string.h>
extern __typeof (memcpy) __memcpy_power7;
#define memcpy __memcpy_power7
extern __typeof (memmove) __memmove_power7;
#define MEMMOVE __memmove_power7
#undef libc_hidden_builtin_def
#define libc_hidden_builtin_def(name)
#define MEMCPY_OK_FOR_FWD_MEMMOVE 1
#include <string/memmove.c>

34
sysdeps/powerpc/powerpc32/power4/multiarch/memmove-ppc.c Normal file
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@ -0,0 +1,34 @@
/* Power7 multiarch memmove.
Copyright (C) 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; see the file COPYING.LIB. If
not, see <http://www.gnu.org/licenses/>. */
#include <string.h>
extern __typeof (memcpy) __memcpy_ppc;
#define memcpy __memcpy_ppc
extern __typeof (memmove) __memmove_ppc;
#define MEMMOVE __memmove_ppc
#if defined SHARED
# undef libc_hidden_builtin_def
# define libc_hidden_builtin_def(name) \
__hidden_ver1 (__memmove_ppc, __GI_memmove, __memmove_ppc);
#endif
#define MEMCPY_OK_FOR_FWD_MEMMOVE 1
#include <string/memmove.c>

34
sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c Normal file
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@ -0,0 +1,34 @@
/* Multiple versions of memmove. PowerPC32 version.
Copyright (C) 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/>. */
#if defined SHARED && !defined NOT_IN_libc
/* Redefine memmove so that the compiler won't complain about the type
mismatch with the IFUNC selector in strong_alias, below. */
# include <string.h>
# include "init-arch.h"
extern __typeof (memmove) __memmove_ppc attribute_hidden;
extern __typeof (memmove) __memmove_power7 attribute_hidden;
libc_ifunc (memmove,
(hwcap & PPC_FEATURE_HAS_VSX)
? __memmove_power7
: __memmove_ppc);
#else
# include <string/memmove.c>
#endif