| /* Header file for misc range functions. -*- C++ -*- |
| Copyright (C) 2017-2022 Free Software Foundation, Inc. |
| Contributed by Aldy Hernandez <aldyh@redhat.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/>. */ |
| |
| #ifndef GCC_RANGE_H |
| #define GCC_RANGE_H |
| |
| value_range range_zero (tree type); |
| value_range range_nonzero (tree type); |
| value_range range_positives (tree type); |
| value_range range_negatives (tree type); |
| |
| // Return an irange instance that is a boolean TRUE. |
| |
| static inline int_range<1> |
| range_true (tree type) |
| { |
| unsigned prec = TYPE_PRECISION (type); |
| return int_range<2> (type, wi::one (prec), wi::one (prec)); |
| } |
| |
| // Return an irange instance that is a boolean FALSE. |
| |
| static inline int_range<1> |
| range_false (tree type) |
| { |
| unsigned prec = TYPE_PRECISION (type); |
| return int_range<2> (type, wi::zero (prec), wi::zero (prec)); |
| } |
| |
| // Return an irange that covers both true and false. |
| |
| static inline int_range<1> |
| range_true_and_false (tree type) |
| { |
| unsigned prec = TYPE_PRECISION (type); |
| if (prec == 1) |
| return int_range<2> (type); |
| return int_range<2> (type, wi::zero (prec), wi::one (prec)); |
| } |
| |
| #endif // GCC_RANGE_H |