powerpc: Add powerpc64 strspn optimization

This patch makes the POWER7 optimized strspn generic by using
default doubleword stores to zero the hash, instead of VSX
instructions. Performance on POWER7/POWER8 machines does not changed.

5 files changed, 1 insertions, 113 deletions

diff --git a/sysdeps/powerpc/powerpc64/multiarch/Makefile b/sysdeps/powerpc/powerpc64/multiarch/Makefile
index abc9d2e..d6de5a5 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/Makefile
+++ b/sysdeps/powerpc/powerpc64/multiarch/Makefile
@@ -15,7 +15,7 @@ sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \
 		   wordcopy-power7 wordcopy-power6 wordcopy-ppc64 \
 		   strcpy-power7 strcpy-ppc64 stpcpy-power7 stpcpy-ppc64 \
 		   strrchr-power7 strrchr-ppc64 strncat-power7 strncat-ppc64 \
-		   strspn-power7 strspn-ppc64 strcspn-power7 strcspn-ppc64 \
+		   strcspn-power7 strcspn-ppc64 \
 		   strpbrk-power7 strpbrk-ppc64 strncpy-power7 strncpy-ppc64 \
 		   stpncpy-power7 stpncpy-ppc64 strcmp-power7 strcmp-ppc64 \
 		   strcat-power7 strcat-ppc64 memmove-power7 memmove-ppc64 \
diff --git a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
index 06d5be9..4a9e523 100644
--- a/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
@@ -272,14 +272,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
 	      IFUNC_IMPL_ADD (array, i, strncat, 1,
 			      __strncat_ppc))
 
-  /* Support sysdeps/powerpc/powerpc64/multiarch/strspn.c.  */
-  IFUNC_IMPL (i, name, strspn,
-	      IFUNC_IMPL_ADD (array, i, strspn,
-			      hwcap & PPC_FEATURE_HAS_VSX,
-			      __strspn_power7)
-	      IFUNC_IMPL_ADD (array, i, strspn, 1,
-			      __strspn_ppc))
-
   /* Support sysdeps/powerpc/powerpc64/multiarch/strcspn.c.  */
   IFUNC_IMPL (i, name, strcspn,
 	      IFUNC_IMPL_ADD (array, i, strcspn,
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strspn-power7.S b/sysdeps/powerpc/powerpc64/multiarch/strspn-power7.S
deleted file mode 100644
index 889dfee..0000000
--- a/sysdeps/powerpc/powerpc64/multiarch/strspn-power7.S
+++ /dev/null
@@ -1,40 +0,0 @@
-/* Optimized strspn implementation for POWER7.
-   Copyright (C) 2014 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 <sysdep.h>
-
-#undef EALIGN
-#define EALIGN(name, alignt, words)				\
-  .section ".text";						\
-  ENTRY_2(__strspn_power7)					\
-  .align ALIGNARG(alignt);					\
-  EALIGN_W_##words;						\
-  BODY_LABEL(__strspn_power7):					\
-  cfi_startproc;						\
-  LOCALENTRY(__strspn_power7)
-
-#undef END
-#define END(name)						\
-  cfi_endproc;							\
-  TRACEBACK(__strspn_power7)					\
-  END_2(__strspn_power7)
-
-#undef libc_hidden_builtin_def
-#define libc_hidden_builtin_def(name)
-
-#include <sysdeps/powerpc/powerpc64/power7/strspn.S>
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strspn-ppc64.c b/sysdeps/powerpc/powerpc64/multiarch/strspn-ppc64.c
deleted file mode 100644
index b35af3e..0000000
--- a/sysdeps/powerpc/powerpc64/multiarch/strspn-ppc64.c
+++ /dev/null
@@ -1,33 +0,0 @@
-/* Copyright (C) 2014 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 STRSPN __strspn_ppc
-#undef weak_alias
-#define weak_alias(name, aliasname) \
-  extern __typeof (__strspn_ppc) aliasname \
-    __attribute__ ((weak, alias ("__strspn_ppc")));
-#if IS_IN (libc) && defined(SHARED)
-# undef libc_hidden_builtin_def
-# define libc_hidden_builtin_def(name) \
-  __hidden_ver1(__strspn_ppc, __GI_strspn, __strspn_ppc);
-#endif
-
-extern __typeof (strspn) __strspn_ppc attribute_hidden;
-
-#include <string/strspn.c>
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strspn.c b/sysdeps/powerpc/powerpc64/multiarch/strspn.c
deleted file mode 100644
index dd9ec18..0000000
--- a/sysdeps/powerpc/powerpc64/multiarch/strspn.c
+++ /dev/null
@@ -1,31 +0,0 @@
-/* Multiple versions of strspn. PowerPC64 version.
-   Copyright (C) 2014 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)
-# include <string.h>
-# include <shlib-compat.h>
-# include "init-arch.h"
-
-extern __typeof (strspn) __strspn_ppc attribute_hidden;
-extern __typeof (strspn) __strspn_power7 attribute_hidden;
-
-libc_ifunc (strspn,
-            (hwcap & PPC_FEATURE_HAS_VSX)
-            ? __strspn_power7
-            : __strspn_ppc);
-#endif