gcc/config/rs6000/rs6000-modes.def

   1 /* Definitions of target machine for GNU compiler, for IBM RS/6000.
   2    Copyright (C) 2002, 2003, 2004 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, 51 Franklin Street, Fifth Floor, Boston,
  20    MA 02110-1301, 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);
  41
  42 /* Vector modes.  */
  43 VECTOR_MODES (INT, 8);        /*       V8QI V4HI V2SI */
  44 VECTOR_MODES (INT, 16);       /* V16QI V8HI V4SI V2DI */
  45 VECTOR_MODE (INT, DI, 1);
  46 VECTOR_MODES (FLOAT, 8);      /*            V4HF V2SF */
  47 VECTOR_MODES (FLOAT, 16);     /*       V8HF V4SF V2DF */