powerpc: Remove power7 strstr optimization

The optimization is not faster than the generic algorithm,
using the bench-strstr the geometric mean running on a POWER10 machine
using gcc 13.1.1 is 482.47 while the default __strstr_ppc is 340.97
(which uses the generic implementation).

Also, there is no need to redirect the internal str*/mem* call
to optimized version, internal ifunc is supported and enabled
for internal calls (meaning that the generic implementation
will use any asm optimization if available).

Checked on powerpc64le-linux-gnu.
Reviewed-by: Peter Bergner <bergner@linux.ibm.com>

1 files changed, 0 insertions, 29 deletions

diff --git a/sysdeps/powerpc/powerpc64/multiarch/strstr-ppc64.c b/sysdeps/powerpc/powerpc64/multiarch/strstr-ppc64.c
deleted file mode 100644
index 3cf22ee..0000000
--- a/sysdeps/powerpc/powerpc64/multiarch/strstr-ppc64.c
+++ /dev/null
@@ -1,29 +0,0 @@
-/* Copyright (C) 2015-2024 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/>.  */
-
-#include <string.h>
-
-#define STRSTR __strstr_ppc
-#if IS_IN (libc) && defined(SHARED)
-# undef libc_hidden_builtin_def
-# define libc_hidden_builtin_def(name) \
-  __hidden_ver1(__strstr_ppc, __GI_strstr, __strstr_ppc);
-#endif
-
-extern __typeof (strstr) __strstr_ppc attribute_hidden;
-
-#include <string/strstr.c>