gcc/config/rs6000/rs6000-modes.def

   1 /* Definitions of target machine for GNU compiler, for IBM RS/6000.
   2    Copyright (C) 2002, 2003 Free Software Foundation, Inc.
   3    Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
   4
   5    This file is part of GCC.
   6
   7    GCC is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published
   9    by the Free Software Foundation; either version 2, or (at your
  10    option) any later version.
  11
  12    GCC is distributed in the hope that it will be useful, but WITHOUT
  13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  15    License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GCC; see the file COPYING.  If not, write to the
  19    Free Software Foundation, 59 Temple Place - Suite 330, Boston,
  20    MA 02111-1307, USA.  */
  21
  22 /* 128-bit floating point.  ABI_V4 uses IEEE quad, AIX/Darwin
  23    adjust this in rs6000_override_options. */
  24 FLOAT_MODE (TF, 16, ieee_quad_format);
  25
  26 /* PSImode is used for the XER register.  The XER register
  27    is not used for anything; perhaps it should be deleted,
  28    except that that would change register numbers.  */
  29 PARTIAL_INT_MODE (SI);
  30
  31 /* Add any extra modes needed to represent the condition code.
  32
  33    For the RS/6000, we need separate modes when unsigned (logical) comparisons
  34    are being done and we need a separate mode for floating-point.  We also
  35    use a mode for the case when we are comparing the results of two
  36    comparisons, as then only the EQ bit is valid in the register.  */
  37
  38 CC_MODE (CCUNS);
  39 CC_MODE (CCFP);
  40 CC_MODE (CCEQ);