--- a/gcc/config/rs6000/aix61.h	Tue May 25 18:58:51 2010 +0900
+++ b/gcc/config/rs6000/aix61.h	Tue Mar 22 17:18:12 2011 +0900
@@ -1,6 +1,6 @@
 /* Definitions of target machine for GNU compiler,
    for IBM RS/6000 POWER running AIX V6.1.
-   Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+   Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
    Free Software Foundation, Inc.
    Contributed by David Edelsohn (edelsohn@gnu.org).
 
@@ -20,14 +20,8 @@
    along with GCC; see the file COPYING3.  If not see
    <http://www.gnu.org/licenses/>.  */
 
-/* Sometimes certain combinations of command options do not make sense
-   on a particular target machine.  You can define a macro
-   `OVERRIDE_OPTIONS' to take account of this.  This macro, if
-   defined, is executed once just after all the command options have
-   been parsed.
-
-   The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
-   get control.  */
+/* The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
+   get control in TARGET_OPTION_OVERRIDE.  */
 
 #define NON_POWERPC_MASKS (MASK_POWER | MASK_POWER2)
 #define SUBTARGET_OVERRIDE_OPTIONS					\
@@ -122,9 +116,9 @@
 #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS)
 
 #undef  PROCESSOR_DEFAULT
-#define PROCESSOR_DEFAULT PROCESSOR_POWER5
+#define PROCESSOR_DEFAULT PROCESSOR_POWER7
 #undef  PROCESSOR_DEFAULT64
-#define PROCESSOR_DEFAULT64 PROCESSOR_POWER5
+#define PROCESSOR_DEFAULT64 PROCESSOR_POWER7
 
 #undef  TARGET_POWER
 #define TARGET_POWER 0
@@ -203,8 +197,4 @@
 
 #define TARGET_USE_JCR_SECTION 0
 
-/* Default to 128 bit long double.  */
-
-#define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128
-
 #define TARGET_AIX_VERSION 61