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+;; Constraint definitions for Blackfin
+;; Copyright (C) 2008-2014 Free Software Foundation, Inc.
+;; Contributed by Analog Devices
+
+;; 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 "a" "PREGS"
+  "A Pn register.")
+
+(define_register_constraint "d" "DREGS"
+  "A Rn register.")
+
+(define_register_constraint "z" "PREGS_CLOBBERED"
+  "A call clobbered Pn register.")
+
+(define_register_constraint "D" "EVEN_DREGS"
+  "An even-numbered Rn register.")
+
+(define_register_constraint "W" "ODD_DREGS"
+  "An odd-numbered Rn register.")
+
+(define_register_constraint "e" "AREGS"
+  "An accumulator register.")
+
+(define_register_constraint "A" "EVEN_AREGS"
+  "An even-numbered accumulator; A0.")
+
+(define_register_constraint "B" "ODD_AREGS"
+  "An odd-numbered accumulator; A1.")
+
+(define_register_constraint "b" "IREGS"
+  "An I register.")
+
+(define_register_constraint "v" "BREGS"
+  "A B register.")
+
+(define_register_constraint "f" "MREGS"
+  "An M register.")
+
+(define_register_constraint "c" "CIRCREGS"
+  "A register used for circular buffering, i.e. I, B, or L registers.")
+
+(define_register_constraint "C" "CCREGS"
+  "The CC register.")
+
+(define_register_constraint "t" "LT_REGS"
+  "LT0 or LT1.")
+
+(define_register_constraint "u" "LB_REGS"
+  "LB0 or LB1.")
+
+(define_register_constraint "k" "LC_REGS"
+  "LC0 or LC1.")
+
+(define_register_constraint "x" "MOST_REGS"
+  "Any R, P, B, M, I or L register.")
+
+(define_register_constraint "y" "PROLOGUE_REGS"
+  "Additional registers typically used only in prologues and epilogues:
+   RETS, RETN, RETI, RETX, RETE, ASTAT, SEQSTAT and USP.")
+
+(define_register_constraint "w" "NON_A_CC_REGS"
+  "Any register except accumulators or CC.")
+
+(define_register_constraint "Z" "FDPIC_REGS"
+  "@internal The FD-PIC GOT pointer; P3.")
+
+(define_register_constraint "Y" "FDPIC_FPTR_REGS"
+  "@internal The FD-PIC function pointer register; P1.")
+
+(define_register_constraint "q0" "D0REGS"
+  "The register R0.")
+
+(define_register_constraint "q1" "D1REGS"
+  "The register R1.")
+
+(define_register_constraint "q2" "D2REGS"
+  "The register R2.")
+
+(define_register_constraint "q3" "D3REGS"
+  "The register R3.")
+
+(define_register_constraint "q4" "D4REGS"
+  "The register R4.")
+
+(define_register_constraint "q5" "D5REGS"
+  "The register R5.")
+
+(define_register_constraint "q6" "D6REGS"
+  "The register R6.")
+
+(define_register_constraint "q7" "D7REGS"
+  "The register R7.")
+
+(define_register_constraint "qA" "P0REGS"
+  "The register P0.")
+
+;; Constant constraints.
+
+(define_constraint "J"
+  "A constant value of the form 2**N, where N 5-bit wide."
+  (and (match_code "const_int")
+       (match_test "log2constp (ival)")))
+
+(define_constraint "Ks3"
+  "A signed 3 bit immediate."
+  (and (match_code "const_int")
+       (match_test "ival >= -4 && ival <= 3")))
+
+(define_constraint "Ku3"
+  "An unsigned 3 bit immediate."
+  (and (match_code "const_int")
+       (match_test "ival >= 0 && ival <= 7")))
+
+(define_constraint "Ks4"
+  "A signed 4 bit immediate."
+  (and (match_code "const_int")
+       (match_test "ival >= -8 && ival <= 7")))
+
+(define_constraint "Ku4"
+  "An unsigned 4 bit immediate."
+  (and (match_code "const_int")
+       (match_test "ival >= 0 && ival <= 15")))
+
+(define_constraint "Ks5"
+  "A signed 5 bit immediate."
+  (and (match_code "const_int")
+       (match_test "ival >= -16 && ival <= 15")))
+
+(define_constraint "Ku5"
+  "An unsigned 5 bit immediate."
+  (and (match_code "const_int")
+       (match_test "ival >= 0 && ival <= 31")))
+
+(define_constraint "Ks7"
+  "A signed 7 bit immediate."
+  (and (match_code "const_int")
+       (match_test "ival >= -64 && ival <= 63")))
+
+(define_constraint "KN7"
+  "A constant that when negated is a signed 7 bit immediate."
+  (and (match_code "const_int")
+       (match_test "ival >= -63 && ival <= 64")))
+
+(define_constraint "Ksh"
+  "A signed 16 bit immediate."
+  (and (match_code "const_int")
+       (match_test "ival >= -32768 && ival <= 32767")))
+
+(define_constraint "Kuh"
+  "An unsigned 16 bit immediate."
+  (and (match_code "const_int")
+       (match_test "ival >= 0 && ival <= 65535")))
+
+(define_constraint "L"
+  "A constant value of the form ~(2**N)."
+  (and (match_code "const_int")
+       (match_test "log2constp (~ival)")))
+
+(define_constraint "M1"
+  "An integer with the value 255."
+  (and (match_code "const_int")
+       (match_test "ival == 255")))
+
+(define_constraint "M2"
+  "An integer with the value 65535."
+  (and (match_code "const_int")
+       (match_test "ival == 65535")))
+
+(define_constraint "P0"
+  "An integer with the value 0."
+  (and (match_code "const_int")
+       (match_test "ival == 0")))
+
+(define_constraint "P1"
+  "An integer with the value 1."
+  (and (match_code "const_int")
+       (match_test "ival == 1")))
+
+(define_constraint "P2"
+  "An integer with the value 2."
+  (and (match_code "const_int")
+       (match_test "ival == 2")))
+
+(define_constraint "P3"
+  "An integer with the value 3."
+  (and (match_code "const_int")
+       (match_test "ival == 3")))
+
+(define_constraint "P4"
+  "An integer with the value 4."
+  (and (match_code "const_int")
+       (match_test "ival == 4")))
+
+(define_constraint "PA"
+  "An integer constant describing any macflag except variants involving M."
+  (and (match_code "const_int")
+       (match_test "ival != MACFLAG_M && ival != MACFLAG_IS_M")))
+
+(define_constraint "PB"
+  "An integer constant describing any macflag involving M."
+  (and (match_code "const_int")
+       (match_test "ival == MACFLAG_M || ival == MACFLAG_IS_M")))
+
+
+;; Extra constraints
+
+(define_constraint "Q"
+  "A SYMBOL_REF."
+  (match_code "symbol_ref"))
+