powerpc: Use generic wcsrchr optimization

This patch removes the power6 wcsrchr optimization and uses generic
implementation instead.  Currently, both power6 and power7 IFUNC variant
resulting binary are essentially the same and the generic implementation
with unrolling loop set to 8 also results in similar performance.

Checked on powerpc64-linux-gnu.

	* sysdeps/powerpc/Makefile [$(subdir) == wcsmbs] (CFLAGS-wcsrchr.c):
	New rule.
	* sysdeps/powerpc/power6/wcsrchr.c: Remove file.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr-power6.c:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr-power7.c:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr-ppc32.c:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wcsrchr-power6.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wcsrchr-power7.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wcsrchr-ppc64.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wcsrchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/power6/wcsrchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/Makefile
	[$(subdir) == wcsmbs] (sysdeps_routines): Remove wcsrchr-power6 and
	wcsrchr-power7.
	(CFLAGS-wcsrchr-power7.c, CFLAGS-wcsrchr-power6.c): Remove rule.
	* sysdeps/powerpc/powerpc64/multiarch/Makefile: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/ifunc-impl-list.c:
	Remove wcsrchr optimizations.
	* sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c: Likewise.

1 files changed, 0 insertions, 89 deletions

diff --git a/sysdeps/powerpc/power6/wcsrchr.c b/sysdeps/powerpc/power6/wcsrchr.c
deleted file mode 100644
index 1762bd2..0000000
--- a/sysdeps/powerpc/power6/wcsrchr.c
+++ /dev/null
@@ -1,89 +0,0 @@
-/* wcsrchr.c - Wide Character Reverse Search for POWER6+.
-   Copyright (C) 2012-2019 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 <wchar.h>
-
-#ifndef WCSRCHR
-# define WCSRCHR wcsrchr
-#endif
-
-/* Find the last occurrence of WC in WCS.  */
-wchar_t *
-WCSRCHR (const wchar_t *wcs, const wchar_t wc)
-{
-  const wchar_t *wcs2 = wcs + 1;
-  const wchar_t *retval = NULL;
-
-  if (*wcs == wc)
-    retval = wcs;
-
-  if (*wcs == L'\0') return (wchar_t *) retval;
-
-  do
-    {
-    wcs+=2;
-
-    if (*wcs2 == wc)
-      retval = wcs2;
-    if (*wcs2 == L'\0')
-      return (wchar_t *) retval;
-    wcs2+=2;
-
-    if (*wcs == wc)
-      retval = wcs;
-    if (*wcs == L'\0')
-      return (wchar_t *) retval;
-    wcs+=2;
-
-    if (*wcs2 == wc)
-      retval = wcs2;
-    if (*wcs2 == L'\0')
-      return (wchar_t *) retval;
-    wcs2+=2;
-
-    if (*wcs == wc)
-      retval = wcs;
-    if (*wcs == L'\0')
-      return (wchar_t *) retval;
-    wcs+=2;
-
-    if (*wcs2 == wc)
-      retval = wcs2;
-    if (*wcs2 == L'\0')
-      return (wchar_t *) retval;
-    wcs2+=2;
-
-    if (*wcs == wc)
-      retval = wcs;
-    if (*wcs == L'\0')
-      return (wchar_t *) retval;
-    wcs+=2;
-
-    if (*wcs2 == wc)
-      retval = wcs2;
-    if (*wcs2 == L'\0')
-      return (wchar_t *) retval;
-    wcs2+=2;
-
-    if (*wcs == wc)
-      retval = wcs;
-    }
-  while (*wcs != L'\0');
-
-  return (wchar_t *) retval;
-}