mesa/src/compiler/nir/nir_range_analysis.h
Rhys Perry 84eeecf822 nir/range_analysis: use a dense array
ministat (nir_analyze_fp_class):
Difference at 95.0% confidence
    -201983 +/- 1064.87
    -9.31575% +/- 0.0468505%
    (Student's t, pooled s = 1257.67)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40346>
2026-03-13 15:38:54 +00:00

87 lines
3.3 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_
#include "util/bitset.h"
#include "util/u_hash_table.h"
#include "nir_defines.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
nir_function_impl *impl;
uint16_t *arr;
BITSET_WORD *bitset;
uint32_t size;
int32_t max;
} nir_fp_analysis_state;
nir_fp_analysis_state nir_create_fp_analysis_state(nir_function_impl *impl);
void nir_invalidate_fp_analysis_state(nir_fp_analysis_state *state);
void nir_free_fp_analysis_state(nir_fp_analysis_state *state);
enum fp_class_bit {
FP_CLASS_NEG_INF = BITFIELD_BIT(0),
FP_CLASS_LT_NEG_ONE = BITFIELD_BIT(1),
FP_CLASS_NEG_ONE = BITFIELD_BIT(2),
FP_CLASS_LT_ZERO_GT_NEG_ONE = BITFIELD_BIT(3),
FP_CLASS_NEG_ZERO = BITFIELD_BIT(4),
FP_CLASS_POS_ZERO = BITFIELD_BIT(5),
FP_CLASS_GT_ZERO_LT_POS_ONE = BITFIELD_BIT(6),
FP_CLASS_POS_ONE = BITFIELD_BIT(7),
FP_CLASS_GT_POS_ONE = BITFIELD_BIT(8),
FP_CLASS_POS_INF = BITFIELD_BIT(9),
FP_CLASS_NAN = BITFIELD_BIT(10),
/**
* A floating-point value that can have non integer (fractional) values.
* Does not replace any of the values above.
*/
FP_CLASS_NON_INTEGRAL = BITFIELD_BIT(11),
};
#define FP_CLASS_UNKNOWN BITFIELD_MASK(12)
#define FP_CLASS_ANY_ZERO (FP_CLASS_NEG_ZERO | FP_CLASS_POS_ZERO)
#define FP_CLASS_ANY_INF (FP_CLASS_NEG_INF | FP_CLASS_POS_INF)
#define FP_CLASS_ANY_NEG_FINITE (FP_CLASS_LT_ZERO_GT_NEG_ONE | FP_CLASS_NEG_ONE | FP_CLASS_LT_NEG_ONE)
#define FP_CLASS_ANY_NEG (FP_CLASS_ANY_NEG_FINITE | FP_CLASS_NEG_INF)
#define FP_CLASS_ANY_POS_FINITE (FP_CLASS_GT_ZERO_LT_POS_ONE | FP_CLASS_POS_ONE | FP_CLASS_GT_POS_ONE)
#define FP_CLASS_ANY_POS (FP_CLASS_ANY_POS_FINITE | FP_CLASS_POS_INF)
#define FP_CLASS_ANY_FINITE (FP_CLASS_ANY_NEG_FINITE | FP_CLASS_ANY_ZERO | FP_CLASS_ANY_POS_FINITE)
#define FP_CLASS_ANY_NUMBER (FP_CLASS_ANY_FINITE | FP_CLASS_ANY_INF)
typedef uint16_t fp_class_mask;
fp_class_mask nir_analyze_fp_class(nir_fp_analysis_state *state, const nir_def *def);
uint64_t nir_def_bits_used(const nir_def *def);
unsigned nir_def_num_lsb_zero(struct hash_table *numlsb_ht, nir_scalar def);
#ifdef __cplusplus
}
#endif
#endif /* _NIR_RANGE_ANALYSIS_H_ */