1 ;; GCC machine description for picochip
2 ;; Copyright (C) 2008 Free Software Foundation, Inc.
3 ;; Contributed by Picochip Ltd (http://www.picochip.com)
4 ;; Maintained by Daniel Towner (dant@picochip.com) and Hariharan
5 ;; Sandanagobalane (hariharan@picochip.com)
7 ;; This file is part of GCC.
9 ;; GCC is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 3, or (at your option)
14 ;; GCC is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GCC; see the file COPYING3. If not, see
21 ;; <http://www.gnu.org/licenses/>.
23 (define_predicate "picochip_register_or_immediate_operand"
24 (ior (match_operand 0 "register_operand")
25 (match_operand 0 "immediate_operand")))
27 (define_predicate "power_of_2_imm_operand"
28 (match_code "const_int")
30 if (GET_CODE (op) == CONST_INT)
32 if (exact_log2 (INTVAL (op)) <= 16 && exact_log2 (INTVAL (op)) > 0)
39 ;; Limit the comparison operators to a selected subset.
40 (define_predicate "picochip_supported_comparison_operator"
41 (and (match_operand 0 "comparison_operator")
42 (match_code "ne,eq,ge,geu,lt,ltu")))
43 (define_predicate "picochip_peephole_comparison_operator"
44 (and (match_operand 0 "comparison_operator")
45 (match_code "ne,eq")))
47 ;; Allow selected arithmetic operators to apply a shift to their first
50 (define_predicate "picochip_first_op_shift_operator"
51 (match_code "and,plus,minus,ior,xor"))
53 ;; The same as the previous predicate, but only allowing those
54 ;; operators which can accept an immediate.
55 (define_predicate "picochip_first_op_shift_operator_imm"
56 (match_code "plus,minus"))
58 ;; Predicate on a J type integer.
59 (define_predicate "picochip_J_operand"
60 (match_operand 0 "immediate_operand")
62 return (CONST_INT == GET_CODE(op) &&
63 picochip_const_ok_for_letter_p (INTVAL(op), 'J'));
66 ;; Is the operand suitable for use in a compare?
68 (define_predicate "picochip_comparison_operand"
69 (ior (match_operand 0 "register_operand")
70 (and (match_operand 0 "immediate_operand")
71 (match_test "picochip_const_ok_for_letter_p(INTVAL(op), 'O')"))))