--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/alpha/constraints.md	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,121 @@
+;; Constraint definitions for DEC Alpha.
+;; Copyright (C) 2007 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/>.
+
+;;; Unused letters:
+;;;    ABCDEF               V  YZ
+;;;       de ghijklmnopq stu wxyz
+
+;; Integer register constraints.
+
+(define_register_constraint "a" "R24_REG"
+ "General register 24, input to division routine")
+
+(define_register_constraint "b" "R25_REG"
+ "General register 24, input to division routine")
+
+(define_register_constraint "c" "R27_REG"
+ "General register 27, function call address")
+
+(define_register_constraint "f" "FLOAT_REGS"
+ "Any floating-point register")
+
+(define_register_constraint "v" "R0_REG"
+ "General register 0, function value return address")
+
+;; Integer constant constraints.
+(define_constraint "I"
+  "An unsigned 8 bit constant"
+  (and (match_code "const_int")
+       (match_test "ival >= 0 && ival <= 255")))
+
+(define_constraint "J"
+  "The constant zero"
+  (and (match_code "const_int")
+       (match_test "ival == 0")))
+
+(define_constraint "K"
+  "Signed 16-bit integer constant"
+  (and (match_code "const_int")
+       (match_test "ival >= -32768 && ival < 32768 ")))
+
+(define_constraint "L"
+  "A shifted signed 16-bit constant appropriate for LDAH"
+  (and (match_code "const_int")
+       (match_test "(ival & 0xffff) == 0
+		    && (ival >> 31 == -1 || ival >> 31 == 0)")))
+
+(define_constraint "M"
+  "A valid operand of a ZAP insn"
+  (and (match_code "const_int")
+       (match_test "zap_mask (ival) != 0")))
+
+(define_constraint "N"
+  "A complemented unsigned 8-bit constant"
+  (and (match_code "const_int")
+       (match_test "~ival >= 0 && ~ival <= 255")))
+
+(define_constraint "O"
+  "A negated unsigned 8-bit constant"
+  (and (match_code "const_int")
+       (match_test "-ival >= 0 && -ival <= 255")))
+
+(define_constraint "P"
+  "The constant 1, 2 or 3"
+  (and (match_code "const_int")
+       (match_test "ival == 1 || ival == 2 || ival == 3")))
+
+(define_constraint "H"
+  "A valid operand of a ZAP insn, when building with 32-bit HOST_WIDE_INT"
+  (and (match_code "const_double")
+       (match_test "mode == VOIDmode && zap_mask (hval) && zap_mask (lval)")))
+
+;; Floating-point constant constraints.
+(define_constraint "G"
+  "The floating point zero constant"
+  (and (match_code "const_double")
+       (match_test "GET_MODE_CLASS (mode) == MODE_FLOAT
+		    && op == CONST0_RTX (mode)")))
+
+;; "Extra" constraints.
+(define_constraint "Q"
+  "@internal A normal_memory_operand"
+  (match_operand 0 "normal_memory_operand"))
+
+(define_constraint "R"
+  "@internal A direct_call_operand"
+  (match_operand:DI 0 "direct_call_operand"))
+
+(define_constraint "S"
+  "An unsigned 6-bit constant"
+  (and (match_code "const_int")
+       (match_test "ival >= 0 && ival <= 63")))
+
+(define_constraint "T"
+  "@internal A high-part symbol"
+  (match_code "high"))
+
+(define_constraint "U"
+  "@internal A UNICOSMK symbol"
+  (and (match_test "TARGET_ABI_UNICOSMK")
+       (match_operand 0 "symbolic_operand")))
+
+(define_constraint "W"
+  "A vector zero constant"
+  (and (match_code "const_vector")
+       (match_test "op == CONST0_RTX (mode)")))