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PowerPC: strcat optimization for PPC64/POWER7

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This patch adds an ifunc power7 strcat symbol that uses the logic on
sysdeps/powerpc/strcat.c but call power7 strlen/strcpy symbols instead
of default ones.
This commit is contained in:
Vidya Ranganathan 2014-06-11 22:21:20 -05:00 committed by Adhemerval Zanella
parent fe5f34e470
commit bc8ea38590
7 changed files with 118 additions and 4 deletions
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13
ChangeLog
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@ -1,3 +1,16 @@
2014-07-02 Vidya Ranganathan <vidya@linux.vnet.ibm.com>
Adhemerval Zanella <azanella@linux.vnet.ibm.com>
* sysdeps/powerpc/strcat.c: Using macro to redefine symbol name.
* sysdeps/powerpc/powerpc64/multiarch/Makefile: Add strcat multiarch
optimizations.
* sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c:
(__libc_ifunc_impl_list): Likewise.
* sysdeps/powerpc/powerpc64/multiarch/strcat.c: New file:
multiarch strcat for PPC64.
* sysdeps/powerpc/powerpc64/multiarch/strcat-ppc64.c: New file/
* sysdeps/powerpc/powerpc64/multiarch/strcat-power7.c: New file.
2014-07-02 Roland McGrath <roland@hack.frob.com>
* sysdeps/unix/sysv/linux/dl-sysdep.c: Include <sys/param.h>.

3
sysdeps/powerpc/powerpc64/multiarch/Makefile
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@ -17,7 +17,8 @@ sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \
strrchr-power7 strrchr-ppc64 strncat-power7 strncat-ppc64 \
strspn-power7 strspn-ppc64 strcspn-power7 strcspn-ppc64 \
strpbrk-power7 strpbrk-ppc64 strncpy-power7 strncpy-ppc64 \
stpncpy-power7 stpncpy-ppc64 strcmp-power7 strcmp-ppc64
stpncpy-power7 stpncpy-ppc64 strcmp-power7 strcmp-ppc64 \
strcat-power7 strcat-ppc64
CFLAGS-strncase-power7.c += -mcpu=power7 -funroll-loops
CFLAGS-strncase_l-power7.c += -mcpu=power7 -funroll-loops

9
sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
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@ -301,5 +301,14 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__strcmp_power7)
IFUNC_IMPL_ADD (array, i, strcmp, 1,
__strcmp_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/strcat.c. */
IFUNC_IMPL (i, name, strcat,
IFUNC_IMPL_ADD (array, i, strcat,
hwcap & PPC_FEATURE_HAS_VSX,
__strcat_power7)
IFUNC_IMPL_ADD (array, i, strcat, 1,
__strcat_ppc))
return i;
}

28
sysdeps/powerpc/powerpc64/multiarch/strcat-power7.c Normal file
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@ -0,0 +1,28 @@
/* 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/ >. */
#include <string.h>
#define STRCAT __strcat_power7
#undef libc_hidden_def
#define libc_hidden_def(name)
#define strcpy __strcpy_power7
#define strlen __strlen_power7
#include <sysdeps/powerpc/strcat.c>

29
sysdeps/powerpc/powerpc64/multiarch/strcat-ppc64.c Normal file
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@ -0,0 +1,29 @@
/* 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/ >. */
#include <string.h>
#define STRCAT __strcat_ppc
#ifdef SHARED
# undef libc_hidden_builtin_def
# define libc_hidden_builtin_def(name) \
__hidden_ver1 (__strcat_ppc, __GI_strcat, __strcat_ppc);
#endif
extern __typeof (strcat) __strcat_ppc attribute_hidden;
#include <sysdeps/powerpc/strcat.c>

31
sysdeps/powerpc/powerpc64/multiarch/strcat.c Normal file
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@ -0,0 +1,31 @@
/* Multiple versions of strcat. PowerPC64 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/>. */
#ifndef NOT_IN_libc
# include <string.h>
# include <shlib-compat.h>
# include "init-arch.h"
extern __typeof (strcat) __strcat_ppc attribute_hidden;
extern __typeof (strcat) __strcat_power7 attribute_hidden;
libc_ifunc (strcat,
(hwcap & PPC_FEATURE_HAS_VSX)
? __strcat_power7
: __strcat_ppc);
#endif

7
sysdeps/powerpc/strcat.c
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@ -18,13 +18,16 @@
#include <string.h>
#ifndef STRCAT
# undef strcat
# define STRCAT strcat
#endif
/* Append SRC on the end of DEST. */
char *
strcat (char *dest, const char *src)
STRCAT(char *dest, const char *src)
{
strcpy (dest + strlen (dest), src);
return dest;
}
libc_hidden_builtin_def (strcat)
libc_hidden_builtin_def (STRCAT)