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diff --git a/gcc/config/lm32/constraints.md b/gcc/config/lm32/constraints.md
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+;; Constraint definitions for Lattice Mico32 architecture.
+;; Contributed by Jon Beniston <jon@beniston.com>
+;;
+;; Copyright (C) 2009 Free Software Foundation, Inc.
+;;
+;; 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_constraint "J"
+  "The value 0."
+  (and (match_code "const_int")
+       (match_test "ival == 0")))
+       
+(define_constraint "K"
+  "A signed 16-bit immediate in the range -32768 to 32767."
+  (and (match_code "const_int")
+       (match_test "IN_RANGE (ival, -32768, 32767)")))
+
+(define_constraint "L"
+  "An unsigned 16-bit immediate in the range 0 to 65535."
+  (and (match_code "const_int")
+       (match_test "IN_RANGE (ival, 0, 65535)")))
+
+(define_constraint "M"
+  "The value 1."
+  (and (match_code "const_int")
+       (match_test "ival == 1")))
+
+(define_constraint "U"
+  "A shifted signed 16-bit constant appropriate for orhi."
+  (and (match_code "const_int")
+       (match_test "(ival & 0xffff) == 0
+		    && (ival >> 31 == -1 || ival >> 31 == 0)")))
+
+(define_constraint "S"
+  "A symbol in the small data section."
+  (match_operand 0 "no_pic_small_symbol"))
+
+(define_constraint "Y"
+  "A high part of a symbol."
+  (and (match_code "high")
+       (ior (ior (match_code "symbol_ref" "0")
+                 (match_code "label_ref" "0"))
+            (match_code "const" "0"))))