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;; GCC machine description for picochip
;; Copyright (C) 2008 Free Software Foundation, Inc.
;; Contributed by Picochip Ltd (http://www.picochip.com)
;; Maintained by Daniel Towner (dant@picochip.com) and Hariharan
;; Sandanagobalane (hariharan@picochip.com)
;;
;; 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 "picochip_register_or_immediate_operand"
(ior (match_operand 0 "register_operand")
(match_operand 0 "immediate_operand")))
(define_predicate "power_of_2_imm_operand"
(match_code "const_int")
{
if (GET_CODE (op) == CONST_INT)
{
if (exact_log2 (INTVAL (op)) <= 16 && exact_log2 (INTVAL (op)) > 0)
return 1;
}
return 0;
})
;; Limit the comparison operators to a selected subset.
(define_predicate "picochip_supported_comparison_operator"
(and (match_operand 0 "comparison_operator")
(match_code "ne,eq,ge,geu,lt,ltu")))
(define_predicate "picochip_peephole_comparison_operator"
(and (match_operand 0 "comparison_operator")
(match_code "ne,eq")))
;; Allow selected arithmetic operators to apply a shift to their first
;; operands
(define_predicate "picochip_first_op_shift_operator"
(match_code "and,plus,minus,ior,xor"))
;; The same as the previous predicate, but only allowing those
;; operators which can accept an immediate.
(define_predicate "picochip_first_op_shift_operator_imm"
(match_code "plus,minus"))
;; Predicate on a J type integer.
(define_predicate "picochip_J_operand"
(match_operand 0 "immediate_operand")
{
return (CONST_INT == GET_CODE(op) &&
picochip_const_ok_for_letter_p (INTVAL(op), 'J'));
})
;; Is the operand suitable for use in a compare?
(define_predicate "picochip_comparison_operand"
(ior (match_operand 0 "register_operand")
(and (match_operand 0 "immediate_operand")
(match_test "picochip_const_ok_for_letter_p(INTVAL(op), 'O')"))))
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