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diff --git a/gcc-4.9/gcc/config/msp430/constraints.md b/gcc-4.9/gcc/config/msp430/constraints.md
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+;;  Machine Description for TI MSP43* processors
+;;  Copyright (C) 2013-2014 Free Software Foundation, Inc.
+;;  Contributed by Red Hat.
+
+;; 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 "R12" "R12_REGS"
+  "Register R12.")
+
+(define_register_constraint "R13" "R13_REGS"
+  "Register R13.")
+
+(define_constraint "K"
+  "Integer constant 1."
+  (and (match_code "const_int")
+       (match_test "IN_RANGE (ival, 1, 1)")))
+
+(define_constraint "L"
+  "Integer constant -1^20..1^19."
+  (and (match_code "const_int")
+       (match_test "IN_RANGE (ival, -1 << 20, 1 << 19)")))
+
+(define_constraint "M"
+  "Integer constant 1-4."
+  (and (match_code "const_int")
+       (match_test "IN_RANGE (ival, 1, 4)")))
+
+;; We do not allow arbitrary constants, eg symbols or labels,
+;; because their address may be above the 16-bit address limit
+;; supported by the offset used in the MOVA instruction.
+(define_constraint "Ya"
+  "Memory reference, any type, but restricted range of constants"
+  (and (match_code "mem")
+       (ior (match_code "reg" "0")
+	    (and (match_code "plus" "0")
+		 (match_code "reg" "00")
+		 (match_test ("CONST_INT_P (XEXP (XEXP (op, 0), 1))")))
+	    (match_test "CONSTANT_P (XEXP (op, 0))")
+	    )))
+
+(define_constraint "Yl"
+  "Memory reference, labels only."
+  (and (match_code "mem")
+       (match_code "label_ref" "0")))
+
+
+;; These are memory references that are safe to use with the X suffix,
+;; because we know/assume they need not index across the 64k boundary.
+(define_constraint "Ys"
+  "Memory reference, stack only."
+  (and (match_code "mem")
+       (ior
+	(and (match_code "plus" "0")
+	     (and (match_code "reg" "00")
+		  (match_test ("CONST_INT_P (XEXP (XEXP (op, 0), 1))"))
+		  (match_test ("IN_RANGE (INTVAL (XEXP (XEXP (op, 0), 1)), -1 << 15, (1 << 15)-1)"))))
+	(match_code "reg" "0")
+	)))
+
+(define_constraint "Yc"
+  "Memory reference, for CALL - we can't use SP."
+  (and (match_code "mem")
+       (match_code "mem" "0")
+       (not (ior
+	     (and (match_code "plus" "00")
+		  (and (match_code "reg" "000")
+		       (match_test ("REGNO (XEXP (XEXP (op, 0), 0)) != SP_REGNO"))))
+	     (and (match_code "reg" "0")
+		  (match_test ("REGNO (XEXP (XEXP (op, 0), 0)) != SP_REGNO")))
+	     ))))
+