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diff --git a/gcc/config/rs6000/rs6000-modes.def b/gcc/config/rs6000/rs6000-modes.def
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+/* Definitions of target machine for GNU compiler, for IBM RS/6000.
+   Copyright (C) 2002, 2003, 2004, 2007 Free Software Foundation, Inc.
+   Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
+
+   This file is part of GCC.
+
+   GCC is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3, or (at your
+   option) any later version.
+
+   GCC 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 General Public
+   License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GCC; see the file COPYING3.  If not see
+   <http://www.gnu.org/licenses/>.  */
+
+/* 128-bit floating point.  ABI_V4 uses IEEE quad, AIX/Darwin
+   adjust this in rs6000_override_options.  */
+FLOAT_MODE (TF, 16, ieee_quad_format);
+
+/* PSImode is used for the XER register.  The XER register
+   is not used for anything; perhaps it should be deleted,
+   except that that would change register numbers.  */
+PARTIAL_INT_MODE (SI);
+
+/* Add any extra modes needed to represent the condition code.
+
+   For the RS/6000, we need separate modes when unsigned (logical) comparisons
+   are being done and we need a separate mode for floating-point.  We also
+   use a mode for the case when we are comparing the results of two
+   comparisons, as then only the EQ bit is valid in the register.  */
+
+CC_MODE (CCUNS);
+CC_MODE (CCFP);
+CC_MODE (CCEQ);
+
+/* Vector modes.  */
+VECTOR_MODES (INT, 8);        /*       V8QI V4HI V2SI */
+VECTOR_MODES (INT, 16);       /* V16QI V8HI V4SI V2DI */
+VECTOR_MODE (INT, DI, 1);
+VECTOR_MODES (FLOAT, 8);      /*            V4HF V2SF */
+VECTOR_MODES (FLOAT, 16);     /*       V8HF V4SF V2DF */