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58fe7837b8
When we replace an expresion we have to compute bitsize information for the replacement. We do this in two passes to validate that bitsize information is consistent and correct: first we propagate bitsize from child nodes to parent, then we do it the other way around, starting from the original's instruction destination bitsize. v2 (Iago): - Always use nir_type_bool32 instead of nir_type_bool when generating algebraic optimizations. Before we used nir_type_bool32 with constants and nir_type_bool with variables. - Fix bool comparisons in nir_search.c to account for bitsized types. v3 (Sam): - Unpack the double constant value as unsigned long long (8 bytes) in nir_algrebraic.py. v4 (Sam): - Use helpers to get type size and base type from nir_alu_type. Signed-off-by: Iago Toral Quiroga <itoral@igalia.com> Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com> Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com> Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
101 lines
3.1 KiB
C
101 lines
3.1 KiB
C
/*
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* Copyright © 2014 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Jason Ekstrand (jason@jlekstrand.net)
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*
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*/
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#ifndef _NIR_SEARCH_
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#define _NIR_SEARCH_
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#include "nir.h"
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#define NIR_SEARCH_MAX_VARIABLES 16
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typedef enum {
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nir_search_value_expression,
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nir_search_value_variable,
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nir_search_value_constant,
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} nir_search_value_type;
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typedef struct {
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nir_search_value_type type;
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} nir_search_value;
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typedef struct {
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nir_search_value value;
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/** The variable index; Must be less than NIR_SEARCH_MAX_VARIABLES */
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unsigned variable;
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/** Indicates that the given variable must be a constant
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*
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* This is only alloed in search expressions and indicates that the
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* given variable is only allowed to match constant values.
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*/
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bool is_constant;
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/** Indicates that the given variable must have a certain type
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*
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* This is only allowed in search expressions and indicates that the
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* given variable is only allowed to match values that come from an ALU
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* instruction with the given output type. A type of nir_type_void
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* means it can match any type.
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*
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* Note: A variable that is both constant and has a non-void type will
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* never match anything.
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*/
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nir_alu_type type;
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} nir_search_variable;
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typedef struct {
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nir_search_value value;
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nir_alu_type type;
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union {
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uint64_t u;
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int64_t i;
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double d;
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} data;
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} nir_search_constant;
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typedef struct {
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nir_search_value value;
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nir_op opcode;
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const nir_search_value *srcs[4];
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} nir_search_expression;
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NIR_DEFINE_CAST(nir_search_value_as_variable, nir_search_value,
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nir_search_variable, value)
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NIR_DEFINE_CAST(nir_search_value_as_constant, nir_search_value,
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nir_search_constant, value)
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NIR_DEFINE_CAST(nir_search_value_as_expression, nir_search_value,
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nir_search_expression, value)
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nir_alu_instr *
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nir_replace_instr(nir_alu_instr *instr, const nir_search_expression *search,
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const nir_search_value *replace, void *mem_ctx);
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#endif /* _NIR_SEARCH_ */
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