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 26 #include "nir.h" 27 28 enum ENUM_PACKED ssa_ranges { 29 unknown = 0, 30 lt_zero, 31 le_zero, 32 gt_zero, 33 ge_zero, 34 ne_zero, 35 eq_zero, 36 last_range = eq_zero 37 }; 38 39 struct ssa_result_range { 40 enum ssa_ranges range; 41 42 /** A floating-point value that can only have integer values. */ 43 bool is_integral; 44 45 /** A floating-point value that cannot be NaN. */ 46 bool is_a_number; 47 48 /** Is the value known to be a finite number? */ 49 bool is_finite; 50 }; 51 52 #ifdef __cplusplus 53 extern "C" { 54 #endif 55 56 extern struct ssa_result_range 57 nir_analyze_range(struct hash_table *range_ht, 58 const nir_alu_instr *instr, unsigned src); 59 60 uint64_t nir_def_bits_used(const nir_def *def); 61 62 #ifdef __cplusplus 63 } 64 #endif 65 #endif /* _NIR_RANGE_ANALYSIS_H_ */ 66