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powerpc: Optimized strcat for POWER8/PPC64 

With new optimized strcpy for POWER8, this patch adds an optimized
strcat which uses it along with default implementation at strings/.
This commit is contained in:
Adhemerval Zanella 2014-12-23 13:36:34 -05:00
parent 96d6fd6c40
commit 94c9680945
5 changed files with 49 additions and 4 deletions
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9
ChangeLog
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@ -1,5 +1,14 @@
2015-01-13 Adhemerval Zanella <azanella@linux.vnet.ibm.com>
* sysdeps/powerpc/powerpc64/multiarch/Makefile [sysdep_routines]: Add
strncat-power8 object.
* sysdeps/powerpc/powerpc64/multiarch/strcat.c (strcat): Add
__strcat_power8 implementation.
* sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Add __strcat_power8 implementation.
* sysdeps/powerpc/powerpc64/multiarch/strcat-power8.c: New file:
optimized strcat for power8.
* sysdeps/powerpc/powerpc64/multiarch/Makefile [sysdep_routines]: Add
strcpy-power8 and stpcpy-power8 objects.
* sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c

4
sysdeps/powerpc/powerpc64/multiarch/Makefile
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@ -18,8 +18,8 @@ sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \
strrchr-power7 strrchr-ppc64 strncat-power7 strncat-ppc64 \
strncpy-power7 strncpy-ppc64 \
stpncpy-power7 stpncpy-ppc64 strcmp-power7 strcmp-ppc64 \
strcat-power7 strcat-ppc64 memmove-power7 memmove-ppc64 \
bcopy-ppc64
strcat-power8 strcat-power7 strcat-ppc64 memmove-power7 \
memmove-ppc64 bcopy-ppc64
CFLAGS-strncase-power7.c += -mcpu=power7 -funroll-loops
CFLAGS-strncase_l-power7.c += -mcpu=power7 -funroll-loops

3
sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
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@ -302,6 +302,9 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/powerpc/powerpc64/multiarch/strcat.c. */
IFUNC_IMPL (i, name, strcat,
IFUNC_IMPL_ADD (array, i, strcat,
hwcap2 & PPC_FEATURE2_ARCH_2_07,
__strcat_power8)
IFUNC_IMPL_ADD (array, i, strcat,
hwcap & PPC_FEATURE_HAS_VSX,
__strcat_power7)

30
sysdeps/powerpc/powerpc64/multiarch/strcat-power8.c Normal file
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@ -0,0 +1,30 @@
/* Copyright (C) 2015 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_power8
#undef libc_hidden_def
#define libc_hidden_def(name)
extern typeof (strcpy) __strcpy_power8;
extern typeof (strlen) __strlen_power7;
#define strcpy __strcpy_power8
#define strlen __strlen_power7
#include <sysdeps/powerpc/strcat.c>

7
sysdeps/powerpc/powerpc64/multiarch/strcat.c
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@ -23,9 +23,12 @@
extern __typeof (strcat) __strcat_ppc attribute_hidden;
extern __typeof (strcat) __strcat_power7 attribute_hidden;
extern __typeof (strcat) __strcat_power8 attribute_hidden;
libc_ifunc (strcat,
(hwcap & PPC_FEATURE_HAS_VSX)
? __strcat_power7
(hwcap2 & PPC_FEATURE2_ARCH_2_07)
? __strcat_power8 :
(hwcap & PPC_FEATURE_HAS_VSX)
? __strcat_power7
: __strcat_ppc);
#endif