--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/avr/predicates.md	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,112 @@
+;; Predicate definitions for ATMEL AVR micro controllers.
+;; Copyright (C) 2006, 2007, 2008 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/>.
+
+;; Registers from r0 to r15.
+(define_predicate "l_register_operand"
+  (and (match_code "reg")
+       (match_test "REGNO (op) <= 15")))
+
+;; Registers from r16 to r31.
+(define_predicate "d_register_operand"
+  (and (match_code "reg")
+       (match_test "REGNO (op) >= 16 && REGNO (op) <= 31")))
+
+(define_predicate "even_register_operand"
+  (and (match_code "reg")
+       (and (match_test "REGNO (op) <= 31")
+            (match_test "(REGNO (op) & 1) == 0"))))
+
+(define_predicate "odd_register_operand"
+  (and (match_code "reg")
+       (and (match_test "REGNO (op) <= 31")
+            (match_test "(REGNO (op) & 1) != 0"))))
+
+;; SP register.
+(define_predicate "stack_register_operand"
+  (and (match_code "reg")
+       (match_test "REGNO (op) == REG_SP")))
+
+;; Return true if OP is a valid address for lower half of I/O space.
+(define_predicate "low_io_address_operand"
+  (and (match_code "const_int")
+       (match_test "IN_RANGE((INTVAL (op)), 0x20, 0x3F)")))
+
+;; Return true if OP is a valid address for high half of I/O space.
+(define_predicate "high_io_address_operand"
+  (and (match_code "const_int")
+       (match_test "IN_RANGE((INTVAL (op)), 0x40, 0x5F)")))
+
+;; Return true if OP is a valid address of I/O space.
+(define_predicate "io_address_operand"
+  (and (match_code "const_int")
+       (match_test "IN_RANGE((INTVAL (op)), 0x20, (0x60 - GET_MODE_SIZE(mode)))")))
+
+;; Return 1 if OP is the zero constant for MODE.
+(define_predicate "const0_operand"
+  (and (match_code "const_int,const_double")
+       (match_test "op == CONST0_RTX (mode)")))
+
+;; Returns true if OP is either the constant zero or a register.
+(define_predicate "reg_or_0_operand"
+  (ior (match_operand 0 "register_operand")
+       (match_operand 0 "const0_operand")))
+
+;; Returns 1 if OP is a SYMBOL_REF.
+(define_predicate "symbol_ref_operand"
+  (match_code "symbol_ref"))
+
+;; Return true if OP is a constant that contains only one 1 in its
+;; binary representation.
+(define_predicate "single_one_operand"
+  (and (match_code "const_int")
+       (match_test "exact_log2(INTVAL (op) & GET_MODE_MASK (mode)) >= 0")))
+
+;; Return true if OP is a constant that contains only one 0 in its
+;; binary representation.
+(define_predicate "single_zero_operand"
+  (and (match_code "const_int")
+       (match_test "exact_log2(~INTVAL (op) & GET_MODE_MASK (mode)) >= 0")))
+
+;;
+(define_predicate "avr_sp_immediate_operand"
+  (and (match_code "const_int")
+       (match_test "INTVAL (op) >= -6 && INTVAL (op) <= 5")))
+
+;; True for EQ & NE
+(define_predicate "eqne_operator"
+  (match_code "eq,ne"))
+       
+;; True for GE & LT
+(define_predicate "gelt_operator"
+  (match_code "ge,lt"))
+       
+;; True for GT, GTU, LE & LEU
+(define_predicate "difficult_comparison_operator"
+  (match_code "gt,gtu,le,leu"))
+
+;; False for GT, GTU, LE & LEU
+(define_predicate "simple_comparison_operator"
+  (and (match_operand 0 "comparison_operator")
+       (not (match_code "gt,gtu,le,leu"))))
+
+;; Return true if OP is a valid call operand.
+(define_predicate "call_insn_operand"
+  (and (match_code "mem")
+       (ior (match_test "register_operand (XEXP (op, 0), mode)")
+            (match_test "CONSTANT_ADDRESS_P (XEXP (op, 0))"))))