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+;; Constraints for Vitesse IQ2000 processors
+;; Copyright (C) 2011 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/>.
+
+;; Register constraints.
+(define_register_constraint "b" "ALL_REGS"
+  "@internal")
+
+(define_register_constraint "d" "GR_REGS"
+  "@internal")
+
+(define_register_constraint "y" "GR_REGS"
+  "@internal")
+
+;; Integer constraints.
+(define_constraint "I"
+  "A 16-bit signed integer."
+  (and (match_code "const_int")
+       (match_test "IN_RANGE (ival, -32768, 32767)")))
+
+(define_constraint "J"
+  "Zero."
+  (and (match_code "const_int")
+       (match_test "ival == 0")))
+
+(define_constraint "K"
+  "A 16-bit unsigned integer"
+  (and (match_code "const_int")
+       (match_test "IN_RANGE (ival, 0, 65535)")))
+
+(define_constraint "L"
+  "A 32-bit constant whose bottom 16 bits are zero."
+  (and (match_code "const_int")
+      (ior (match_test "(ival | 0x7fff0000) == 0x7fff0000")
+	   (match_test "(ival | 0x7fff0000) + 0x10000 == 0"))))
+
+(define_constraint "M"
+  "Any constant not matched by 'I', 'K', or 'L'."
+  (and (match_code "const_int")
+       (match_test "!insn_const_int_ok_for_constraint (ival, CONSTRAINT_I)")
+       (match_test "!insn_const_int_ok_for_constraint (ival, CONSTRAINT_K)")
+       (match_test "!insn_const_int_ok_for_constraint (ival, CONSTRAINT_L)")))
+
+(define_constraint "N"
+  "Any constant whose lower or upper 16 bits are 0xffff."
+  (and (match_code "const_int")
+       (ior (match_test "(ival & 0xffff) == 0xffff")
+	    (match_test "(ival & 0xffff0000) == 0xffff0000"))))
+
+(define_constraint "O"
+  "A 5-bit signed integer."
+  (and (match_code "const_int")
+       (match_test "IN_RANGE (ival, -31, 31)")))
+
+;; Floating-point constraints.
+(define_constraint "G"
+  "Floating-point zero."
+  (and (match_code "const_double")
+       (match_test "op == CONST0_RTX (mode)")))
+
+;; Extra constraints.
+(define_constraint "R"
+  "A memory reference which takes one word for the instruction."
+  (match_test "simple_memory_operand (op, mode)"))