1 | /* Header file for misc range functions. -*- C++ -*- |
2 | Copyright (C) 2017-2024 Free Software Foundation, Inc. |
3 | Contributed by Aldy Hernandez <aldyh@redhat.com>. |
4 | |
5 | This file is part of GCC. |
6 | |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free |
9 | Software Foundation; either version 3, or (at your option) any later |
10 | version. |
11 | |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
15 | 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 | #ifndef GCC_RANGE_H |
22 | #define GCC_RANGE_H |
23 | |
24 | value_range range_zero (tree type); |
25 | value_range range_nonzero (tree type); |
26 | value_range range_positives (tree type); |
27 | value_range range_negatives (tree type); |
28 | |
29 | // Return an irange instance that is a boolean TRUE. |
30 | |
31 | inline int_range<1> |
32 | range_true (tree type = boolean_type_node) |
33 | { |
34 | unsigned prec = TYPE_PRECISION (type); |
35 | return int_range<1> (type, wi::one (precision: prec), wi::one (precision: prec)); |
36 | } |
37 | |
38 | // Return an irange instance that is a boolean FALSE. |
39 | |
40 | inline int_range<1> |
41 | range_false (tree type = boolean_type_node) |
42 | { |
43 | unsigned prec = TYPE_PRECISION (type); |
44 | return int_range<1> (type, wi::zero (precision: prec), wi::zero (precision: prec)); |
45 | } |
46 | |
47 | // Return an irange that covers both true and false. |
48 | |
49 | inline int_range<1> |
50 | range_true_and_false (tree type = boolean_type_node) |
51 | { |
52 | unsigned prec = TYPE_PRECISION (type); |
53 | if (prec == 1) |
54 | return int_range<1> (type); |
55 | return int_range<1> (type, wi::zero (precision: prec), wi::one (precision: prec)); |
56 | } |
57 | |
58 | #endif // GCC_RANGE_H |
59 | |