gcc/config/visium/visium-modes.def

   1 /* Machine description for Visium.
   2    Copyright (C) 2014-2018 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 3, or (at your option)
   9 any later version.
  10
  11 GCC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 /* Add any extra modes needed to represent the condition code.
  21
  22    We have a CCNZ mode which is used for implicit comparisons with zero when
  23    arithmetic instructions set the condition code.  Only the N and Z flags
  24    are valid in this mode, which means that only the =,!= and <,>= operators
  25    can be used in conjunction with it.
  26
  27    We also have a CCCmode which is used by the arithmetic instructions when
  28    they explicitly set the C flag (unsigned overflow) and by the bit-test
  29    instruction.  Only the =,!= and unsigned <,>= operators can be used in
  30    conjunction with it.
  31
  32    We also have a CCVmode which is used by the arithmetic instructions when
  33    they explicitly set the V flag (signed overflow).  Only the =,!= operators
  34    can be used in conjunction with it.
  35
  36    We also have two modes to indicate that the condition code is set by the
  37    the floating-point unit.  One for comparisons which generate an exception
  38    if the result is unordered (CCFPEmode) and one for comparisons which never
  39    generate such an exception (CCFPmode).  */
  40
  41 CC_MODE (CCNZ);
  42 CC_MODE (CCC);
  43 CC_MODE (CCV);
  44 CC_MODE (CCFP);
  45 CC_MODE (CCFPE);