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powerpc64le: Optimized strcat for POWER10

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This patch adds an optimized strcat which makes use of the default
strcat function which calls the Power10 strcpy and strlen routines.
This commit is contained in:
Mahesh Bodapati 2024-11-19 15:57:35 -05:00 committed by Peter Bergner
parent 229265cc2c
commit 3ef7e42861
4 changed files with 56 additions and 9 deletions
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5
sysdeps/powerpc/powerpc64/multiarch/Makefile
View File

@ -34,8 +34,9 @@ ifneq (,$(filter %le,$(config-machine)))
sysdep_routines += memchr-power10 memcmp-power10 memcpy-power10 \
memmove-power10 memset-power10 rawmemchr-power9 \
rawmemchr-power10 strcmp-power9 strcmp-power10 \
strncmp-power9 strncmp-power10 strcpy-power9 stpcpy-power9 \
strlen-power9 strncpy-power9 stpncpy-power9 strlen-power10
strncmp-power9 strncmp-power10 strcpy-power9 strcat-power10 \
stpcpy-power9 strlen-power9 strncpy-power9 stpncpy-power9 \
strlen-power10
endif
CFLAGS-strncase-power7.c += -mcpu=power7 -funroll-loops
CFLAGS-strncase_l-power7.c += -mcpu=power7 -funroll-loops

5
sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
View File

@ -406,6 +406,11 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/powerpc/powerpc64/multiarch/strcat.c. */
IFUNC_IMPL (i, name, strcat,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, strcat, hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap & PPC_FEATURE_HAS_VSX,
__strcat_power10)
#endif
IFUNC_IMPL_ADD (array, i, strcat,
hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_VSX,

33
sysdeps/powerpc/powerpc64/multiarch/strcat-power10.c Normal file
View File

@ -0,0 +1,33 @@
/* Copyright (C) 2024 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
<https://www.gnu.org/licenses/ >. */
#ifdef __LITTLE_ENDIAN__
#include <string.h>
#define STRCAT __strcat_power10
#undef libc_hidden_def
#define libc_hidden_def(name)
extern typeof (strcpy) __strcpy_power9;
extern typeof (strlen) __strlen_power10;
#define strcpy __strcpy_power9
#define strlen __strlen_power10
#include <string/strcat.c>
#endif

22
sysdeps/powerpc/powerpc64/multiarch/strcat.c
View File

@ -25,14 +25,22 @@
extern __typeof (strcat) __strcat_ppc attribute_hidden;
extern __typeof (strcat) __strcat_power7 attribute_hidden;
extern __typeof (strcat) __strcat_power8 attribute_hidden;
#ifdef __LITTLE_ENDIAN__
extern __typeof (strcat) __strcat_power10 attribute_hidden;
#endif
# undef strcat
libc_ifunc_redirected (__redirect_strcat, strcat,
(hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_VSX)
? __strcat_power8
: (hwcap & PPC_FEATURE_ARCH_2_06
&& hwcap & PPC_FEATURE_HAS_VSX)
? __strcat_power7
: __strcat_ppc);
#ifdef __LITTLE_ENDIAN__
(hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap & PPC_FEATURE_HAS_VSX)
? __strcat_power10 :
#endif
(hwcap2 & PPC_FEATURE2_ARCH_2_07
&& hwcap & PPC_FEATURE_HAS_VSX)
? __strcat_power8
: (hwcap & PPC_FEATURE_ARCH_2_06
&& hwcap & PPC_FEATURE_HAS_VSX)
? __strcat_power7
: __strcat_ppc);
#endif