1/*
2 * Copyright © 2018 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23#ifndef _NIR_RANGE_ANALYSIS_H_
24#define _NIR_RANGE_ANALYSIS_H_
25
26enum PACKED ssa_ranges {
27   unknown = 0,
28   lt_zero,
29   le_zero,
30   gt_zero,
31   ge_zero,
32   ne_zero,
33   eq_zero,
34   last_range = eq_zero
35};
36
37struct ssa_result_range {
38   enum ssa_ranges range;
39
40   /** A floating-point value that can only have integer values. */
41   bool is_integral;
42
43   /** A floating-point value that cannot be NaN. */
44   bool is_a_number;
45
46   /** Is the value known to be a finite number? */
47   bool is_finite;
48};
49
50#ifdef __cplusplus
51extern "C" {
52#endif
53
54extern struct ssa_result_range
55nir_analyze_range(struct hash_table *range_ht,
56                  const nir_alu_instr *instr, unsigned src);
57
58uint64_t nir_ssa_def_bits_used(const nir_ssa_def *def);
59
60#ifdef __cplusplus
61}
62#endif
63#endif /* _NIR_RANGE_ANALYSIS_H_ */
64