;; Predicate definitions of Andes NDS32 cpu for GNU compiler
;; Copyright (C) 2012-2014 Free Software Foundation, Inc.
;; Contributed by Andes Technology Corporation.
;;
;; 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_predicate "nds32_equality_comparison_operator"
  (match_code "eq,ne"))

(define_predicate "nds32_greater_less_comparison_operator"
  (match_code "gt,ge,lt,le"))

(define_special_predicate "nds32_logical_binary_operator"
  (match_code "and,ior,xor"))

(define_predicate "nds32_symbolic_operand"
  (match_code "const,symbol_ref,label_ref"))

(define_predicate "nds32_reg_constant_operand"
  (ior (match_operand 0 "register_operand")
       (match_operand 0 "const_int_operand")))

(define_predicate "nds32_rimm15s_operand"
  (ior (match_operand 0 "register_operand")
       (and (match_operand 0 "const_int_operand")
	    (match_test "satisfies_constraint_Is15 (op)"))))

(define_predicate "nds32_imm5u_operand"
  (and (match_operand 0 "const_int_operand")
       (match_test "satisfies_constraint_Iu05 (op)")))

(define_predicate "nds32_move_operand"
  (and (match_operand 0 "general_operand")
       (not (match_code "high,const,symbol_ref,label_ref")))
{
  /* If the constant op does NOT satisfy Is20 nor Ihig,
     we can not perform move behavior by a single instruction.  */
  if (CONST_INT_P (op)
      && !satisfies_constraint_Is20 (op)
      && !satisfies_constraint_Ihig (op))
    return false;

  return true;
})

(define_special_predicate "nds32_load_multiple_operation"
  (match_code "parallel")
{
  /* To verify 'load' operation, pass 'true' for the second argument.
     See the implementation in nds32.c for details.  */
  return nds32_valid_multiple_load_store (op, true);
})

(define_special_predicate "nds32_store_multiple_operation"
  (match_code "parallel")
{
  /* To verify 'store' operation, pass 'false' for the second argument.
     See the implementation in nds32.c for details.  */
  return nds32_valid_multiple_load_store (op, false);
})

(define_special_predicate "nds32_stack_push_operation"
  (match_code "parallel")
{
  /* To verify 'push' operation, pass 'true' for the second argument.
     See the implementation in nds32.c for details.  */
  return nds32_valid_stack_push_pop (op, true);
})

(define_special_predicate "nds32_stack_pop_operation"
  (match_code "parallel")
{
  /* To verify 'pop' operation, pass 'false' for the second argument.
     See the implementation in nds32.c for details.  */
  return nds32_valid_stack_push_pop (op, false);
})

;; ------------------------------------------------------------------------
