Mercurial > hg > CbC > CbC_gcc
diff gcc/config/microblaze/constraints.md @ 68:561a7518be6b
update gcc-4.6
author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
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date | Sun, 21 Aug 2011 07:07:55 +0900 |
parents | |
children | 04ced10e8804 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/config/microblaze/constraints.md Sun Aug 21 07:07:55 2011 +0900 @@ -0,0 +1,72 @@ +;; Constraint definitions for Xilinx MicroBlaze processors. +;; Copyright 2010 Free Software Foundation, Inc. + +;; Contributed by Michael Eager <eager@eagercon.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/>. + +(define_register_constraint "d" "GR_REGS" + "A general register.") + +(define_register_constraint "z" "ST_REGS" + "A status register.") + +;; Define integer constraints + +(define_constraint "I" + "A signed 16-bit constant." + (and (match_code "const_int") + (match_test "SMALL_OPERAND (ival)"))) + +(define_constraint "J" + "Integer zero." + (and (match_code "const_int") + (match_test "ival == 0"))) + +(define_constraint "M" + "A constant which needs two instructions to load." + (and (match_code "const_int") + (match_test "LARGE_OPERAND (ival)"))) + +(define_constraint "N" + "A constant in the range -65535 to -1 (inclusive)." + (and (match_code "const_int") + (match_test "(unsigned HOST_WIDE_INT) (ival + 0xffff) < 0xffff"))) + +(define_constraint "P" + "A constant in the range 1 to 65535 (inclusive)." + (and (match_code "const_int") + (match_test "ival > 0 && ival < 0x10000"))) + +;; Define floating point constraints + +(define_constraint "G" + "Floating-point zero." + (and (match_code "const_double") + (match_test "op == CONST0_RTX (mode)"))) + +;; Define memory constraints + +(define_memory_constraint "R" + "Memory operand which fits in single instruction." + (and (match_code "mem") + (match_test "simple_memory_operand (op, GET_MODE (op))"))) + +(define_memory_constraint "T" + "Double word operand." + (and (match_code "mem") + (match_test "double_memory_operand (op, GET_MODE (op))")))