1;; Predicates of machine description for CR16.
2;; Copyright (C) 2012-2018 Free Software Foundation, Inc.
3;; Contributed by KPIT Cummins Infosystems Limited.
4;;
5;; This file is part of GCC.
6;;
7;; GCC is free software; you can redistribute it and/or modify it
8;; under the terms of the GNU General Public License as published
9;; by the Free Software Foundation; either version 3, or (at your
10;; option) any later version.
11;;
12;; GCC is distributed in the hope that it will be useful, but WITHOUT
13;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14;; or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
15;; License for more details.
16;;
17;; You should have received a copy of the GNU General Public License
18;; along with GCC; see the file COPYING3.  If not see
19;; <http://www.gnu.org/licenses/>.
20
21;; Constraints
22;; Register constraints
23(define_register_constraint "b" "NOSP_REGS"
24  "@no sp registers")
25
26(define_register_constraint "c" "SHORT_REGS"
27  "@short registers")
28
29(define_register_constraint "d" "LONG_REGS"
30  "@long registers")
31
32;; Integer constraints.
33(define_constraint "I"
34  "A signed 4-bit immediate."
35  (and (match_code "const_int")
36       (match_test "SIGNED_INT_FITS_N_BITS (ival, 4)")))
37
38(define_constraint "J"
39  "A signed 5-bit immediate."
40  (and (match_code "const_int")
41       (match_test "SIGNED_INT_FITS_N_BITS (ival, 5)")))
42
43(define_constraint "K"
44  "A signed 6-bit immediate."
45  (and (match_code "const_int")
46       (match_test "SIGNED_INT_FITS_N_BITS (ival, 6)")))
47
48(define_constraint "L"
49  "A unsigned 4-bit immediate."
50  (and (match_code "const_int")
51       (match_test "UNSIGNED_INT_FITS_N_BITS (ival, 4)")))
52
53(define_constraint "M"
54  "A unsigned and customized  4-bit immediate."
55  (and (match_code "const_int")
56       (match_test "(IN_RANGE_P (ival, 0, 15) && ((ival != 9) && (ival != 11)))")))
57
58(define_constraint "N"
59  "A signed 16-bit immediate."
60  (and (match_code "const_int")
61       (match_test "IN_RANGE_P (ival, -32768, 32767)")))
62
63(define_constraint "O"
64  "A unsigned 20-bit immediate."
65  (and (match_code "const_int")
66       (match_test "IN_RANGE_P (ival, 0, 1048575)")))
67
68(define_constraint "Q"
69  "A shift QI immediate."
70  (and (match_code "const_int")
71       (match_test "IN_RANGE_P (ival, 0, 7)")))
72
73(define_constraint "R"
74  "A shift HI immediate."
75  (and (match_code "const_int")
76       (match_test "IN_RANGE_P (ival, 0, 15)")))
77
78(define_constraint "S"
79  "A shift SI immediate."
80  (and (match_code "const_int")
81       (match_test "IN_RANGE_P (ival, 0, 31)")))
82