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authorBen Cheng <bccheng@google.com>2014-03-25 22:37:19 -0700
committerBen Cheng <bccheng@google.com>2014-03-25 22:37:19 -0700
commit1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch)
treec607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/config/mmix/mmix-modes.def
parent283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff)
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Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
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+/* Definitions of target machine for GNU compiler, for MMIX.
+ Copyright (C) 2002-2014 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
+<http://www.gnu.org/licenses/>. */
+
+/* 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);