powerpc: Use generic wcscpy optimization

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

6 files changed, 1 insertions, 122 deletions

diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/Makefile b/sysdeps/powerpc/powerpc32/power4/multiarch/Makefile
index bd9d360..f5141bc 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/Makefile
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/Makefile
@@ -18,13 +18,10 @@ endif
 
 ifeq ($(subdir),wcsmbs)
 sysdep_routines += wcschr-power7 wcschr-power6 wcschr-ppc32 \
-		   wcsrchr-power7 wcsrchr-power6 wcsrchr-ppc32 \
-		   wcscpy-power7 wcscpy-power6 wcscpy-ppc32
+		   wcsrchr-power7 wcsrchr-power6 wcsrchr-ppc32
 
 CFLAGS-wcschr-power7.c += -mcpu=power7
 CFLAGS-wcschr-power6.c += -mcpu=power6
 CFLAGS-wcsrchr-power7.c += -mcpu=power7
 CFLAGS-wcsrchr-power6.c += -mcpu=power6
-CFLAGS-wcscpy-power7.c += -mcpu=power7
-CFLAGS-wcscpy-power6.c += -mcpu=power6
 endif
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/ifunc-impl-list.c b/sysdeps/powerpc/powerpc32/power4/multiarch/ifunc-impl-list.c
index bcd38e0..ae581d6 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/ifunc-impl-list.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/ifunc-impl-list.c
@@ -209,16 +209,5 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
 	      IFUNC_IMPL_ADD (array, i, wcsrchr, 1,
 			      __wcsrchr_ppc))
 
-  /* Support sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy.c.  */
-  IFUNC_IMPL (i, name, wcscpy,
-	      IFUNC_IMPL_ADD (array, i, wcscpy,
-			      hwcap & PPC_FEATURE_HAS_VSX,
-			      __wcscpy_power7)
-	      IFUNC_IMPL_ADD (array, i, wcscpy,
-			      hwcap & PPC_FEATURE_ARCH_2_05,
-			      __wcscpy_power6)
-	      IFUNC_IMPL_ADD (array, i, wcscpy, 1,
-			      __wcscpy_ppc))
-
   return i;
 }
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-power6.c b/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-power6.c
deleted file mode 100644
index 5bb0c82..0000000
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-power6.c
+++ /dev/null
@@ -1,22 +0,0 @@
-/* Copyright (C) 2013-2019 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; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <wchar.h>
-
-#define WCSCPY __wcscpy_power6
-
-#include <sysdeps/powerpc/power6/wcscpy.c>
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-power7.c b/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-power7.c
deleted file mode 100644
index 5375094..0000000
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-power7.c
+++ /dev/null
@@ -1,22 +0,0 @@
-/* Copyright (C) 2013-2019 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; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <wchar.h>
-
-#define WCSCPY __wcscpy_power7
-
-#include <sysdeps/powerpc/power6/wcscpy.c>
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-ppc32.c b/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-ppc32.c
deleted file mode 100644
index 31e0d81..0000000
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-ppc32.c
+++ /dev/null
@@ -1,27 +0,0 @@
-/* Copyright (C) 2013-2019 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; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <wchar.h>
-
-extern __typeof (wcscpy) __wcscpy_ppc;
-
-#define WCSCPY  __wcscpy_ppc
-#include <wcsmbs/wcscpy.c>
-
-#ifdef SHARED
-__hidden_ver1 (__wcscpy_ppc, __GI___wcscpy, __wcscpy_ppc);
-#endif
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy.c b/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy.c
deleted file mode 100644
index 0daf55c..0000000
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy.c
+++ /dev/null
@@ -1,36 +0,0 @@
-/* Multiple versions of wcscpy
-   Copyright (C) 2013-2019 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; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#if IS_IN (libc)
-# define __wcscpy __redirect_wcscpy
-# include <wchar.h>
-# undef __wcscpy
-# include "init-arch.h"
-
-extern __typeof (__redirect_wcscpy) __wcscpy_ppc attribute_hidden;
-extern __typeof (__redirect_wcscpy) __wcscpy_power6 attribute_hidden;
-extern __typeof (__redirect_wcscpy) __wcscpy_power7 attribute_hidden;
-
-libc_ifunc_redirected (__redirect_wcscpy, __wcscpy,
-		       (hwcap & PPC_FEATURE_HAS_VSX)
-		       ? __wcscpy_power7 :
-			 (hwcap & PPC_FEATURE_ARCH_2_05)
-			 ? __wcscpy_power6
-		       : __wcscpy_ppc);
-weak_alias (__wcscpy, wcscpy)
-#endif