mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
synced 2025-12-23 00:20:09 +01:00
aa5d38decd
This commit is necessary to support "nir/range_analysis: Fix analysis of
fmin and fmax with NaN".
No shader-db or fossil-db changes on any Intel platform.
v2: Pack and unpack is_a_number.
v3: Don't set is_a_number of integer constants. The bit pattern might
be NaN.
v4: Update handling of b2i32. intBitsToFloat(int(true)) is
1.401298464324817e-45. Return a value consistent with that.
Fixes: 405de7ccb6 ("nir/range-analysis: Rudimentary value range analysis pass")
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9108>
63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
/*
|
|
* Copyright © 2018 Intel Corporation
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
* IN THE SOFTWARE.
|
|
*/
|
|
#ifndef _NIR_RANGE_ANALYSIS_H_
|
|
#define _NIR_RANGE_ANALYSIS_H_
|
|
|
|
enum PACKED ssa_ranges {
|
|
unknown = 0,
|
|
lt_zero,
|
|
le_zero,
|
|
gt_zero,
|
|
ge_zero,
|
|
ne_zero,
|
|
eq_zero,
|
|
last_range = eq_zero
|
|
};
|
|
|
|
struct ssa_result_range {
|
|
enum ssa_ranges range;
|
|
|
|
/** A floating-point value that can only have integer values. */
|
|
bool is_integral;
|
|
|
|
/** A floating-point value that cannot be NaN. */
|
|
bool is_a_number;
|
|
|
|
/** Is the value known to be a finite number? */
|
|
bool is_finite;
|
|
};
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
extern struct ssa_result_range
|
|
nir_analyze_range(struct hash_table *range_ht,
|
|
const nir_alu_instr *instr, unsigned src);
|
|
|
|
uint64_t nir_ssa_def_bits_used(nir_ssa_def *def);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif /* _NIR_RANGE_ANALYSIS_H_ */
|