PowerPC: optimized memmove for POWER7/PPC32
Commit Message
This patch adds a optimized memmove for power7 by using the optimized
power7 memcpy for forward copying.
Checked on powerpc32-fpu.
--
* sysdeps/powerpc/powerpc32/power4/multiarch/Makefile: Add memmove
multiarch objects.
* sysdeps/powerpc/powerpc32/power4/multiarch/memmove-power7.c: New
file: multiarch power7 memmove.
* sysdeps/powerpc/powerpc32/power4/multiarch/memmove-ppc.c: New file:
multiarch default memmove.
* sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c: New file:
multiarch memove for powerpc32/power4.
---
@@ -11,7 +11,7 @@ sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \
strchr-power7 strchr-ppc32 wcschr-power7 wcschr-power6 \
wcschr-ppc32 wcsrchr-power7 wcsrchr-power6 wcsrchr-ppc32 \
wcscpy-power7 wcscpy-power6 wcscpy-ppc32 wordcopy-power7 \
- wordcopy-power6 wordcopy-ppc32
+ wordcopy-power6 wordcopy-ppc32 memmove-power7 memmove-ppc
CFLAGS-strncase-power7.c += -mcpu=power7 -funroll-loops
CFLAGS-strncase_l-power7.c += -mcpu=power7 -funroll-loops
new file mode 100644
@@ -0,0 +1,31 @@
+/* Power7 multiarch memmove.
+ 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; see the file COPYING.LIB. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+#include <string.h>
+
+extern __typeof (memcpy) __memcpy_power7;
+#define memcpy __memcpy_power7
+
+extern __typeof (memmove) __memmove_power7;
+#define MEMMOVE __memmove_power7
+
+#undef libc_hidden_builtin_def
+#define libc_hidden_builtin_def(name)
+
+#define MEMCPY_OK_FOR_FWD_MEMMOVE 1
+#include <string/memmove.c>
new file mode 100644
@@ -0,0 +1,34 @@
+/* Power7 multiarch memmove.
+ 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; see the file COPYING.LIB. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+#include <string.h>
+
+extern __typeof (memcpy) __memcpy_ppc;
+#define memcpy __memcpy_ppc
+
+extern __typeof (memmove) __memmove_ppc;
+#define MEMMOVE __memmove_ppc
+
+#if defined SHARED
+# undef libc_hidden_builtin_def
+# define libc_hidden_builtin_def(name) \
+ __hidden_ver1 (__memmove_ppc, __GI_memmove, __memmove_ppc);
+#endif
+
+#define MEMCPY_OK_FOR_FWD_MEMMOVE 1
+#include <string/memmove.c>
new file mode 100644
@@ -0,0 +1,34 @@
+/* Multiple versions of memmove. PowerPC32 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 defined SHARED && !defined NOT_IN_libc
+/* Redefine memmove so that the compiler won't complain about the type
+ mismatch with the IFUNC selector in strong_alias, below. */
+# include <string.h>
+# include "init-arch.h"
+
+extern __typeof (memmove) __memmove_ppc attribute_hidden;
+extern __typeof (memmove) __memmove_power7 attribute_hidden;
+
+libc_ifunc (memmove,
+ (hwcap & PPC_FEATURE_HAS_VSX)
+ ? __memmove_power7
+ : __memmove_ppc);
+#else
+# include <string/memmove.c>
+#endif