Subversion Repositories openrisc_2011-10-31

/* Definitions of target machine for GNU compiler, for MMIX.

   Copyright (C) 2002, 2004, 2007 Free Software Foundation, Inc.

   Contributed by Hans-Peter Nilsson (hp@bitrange.com)

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

.  */

/* Node: Condition Code */

/* Like other non-CC0 ports, MMIX need to code which combination of

   comparison insn and branch insn or conditional-set insn to use into the

   condition mode.  The CC mode depends partly on which condition is used

   and partly on the type of the operands.  */

/* The "usual" CC mode is used for a signed operands integer comparison,

   where the CMP insn is used and the result is (integer) -1, 0 or 1 for

   respectively a < b, a == b and a > b.  */

/* The CC_UNS mode is for an unsigned operands integer comparison using

   the CMPU insn.  Result values correspond to those in CCmode.  */

CC_MODE (CC_UNS);

/* The CC_FP mode is for a non-equality floating-point comparison, using

   the FCMP or FCMPE insn.  The result is (integer) -1 or 1 for

   respectively a < b and a > b, otherwise 0.  */

CC_MODE (CC_FP);

/* The CC_FPEQ mode is for an equality floating-point comparison, using

   the FEQL or FEQLE insn.  The result is (integer) 1 for a == b,

   otherwise 0 (including NaN:s).  */

CC_MODE (CC_FPEQ);

/* The CC_FUN mode is for an ordering comparison, using the FUN or FUNE

   insn.  The result is (integer) 1 if a is unordered to b, otherwise the

   result is 0.  */

CC_MODE (CC_FUN);