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Reviewed-by: Gert Wollny <gert.wollny@collabora.com> Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36728>
70 lines
2.7 KiB
C
70 lines
2.7 KiB
C
/*
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* Copyright © 2014 Connor Abbott
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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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#ifndef NIR_INSTR_SET_H
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#define NIR_INSTR_SET_H
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#include "nir_defines.h"
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#include "util/set.h"
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/**
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* This file defines functions for creating, destroying, and manipulating an
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* "instruction set," which is an abstraction for finding duplicate
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* instructions using a hash set. Note that the question of whether an
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* instruction is actually a duplicate (e.g. whether it has any side effects)
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* is handled transparently. The user can pass any instruction to
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* nir_instr_set_add_or_rewrite() and nir_instr_set_remove(), and if the
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* instruction isn't safe to rewrite or isn't supported, it's silently
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* removed.
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*/
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/*@{*/
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/** Creates an instruction set, using a given ralloc mem_ctx */
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void nir_instr_set_init(struct set *s, void *mem_ctx);
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/** Destroys an instruction set. */
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void nir_instr_set_fini(struct set *instr_set);
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/**
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* Adds an instruction to an instruction set if it doesn't exist. If it does
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* already exist, returns the other already-inserted instruction and rewrites
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* all uses of it to point to that instruction. Otherwise, it returns NULL.
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*
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* If cond_function() is given, only rewrites uses if
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* cond_function(old_instr, new_instr) returns true.
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*/
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nir_instr *
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nir_instr_set_add_or_rewrite(struct set *instr_set, nir_instr *instr,
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bool (*cond_function)(const nir_instr *a,
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const nir_instr *b));
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/**
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* Removes an instruction from an instruction set, so that other instructions
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* won't be merged with it.
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*/
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void nir_instr_set_remove(struct set *instr_set, nir_instr *instr);
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/*@}*/
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#endif /* NIR_INSTR_SET_H */
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