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2da3a6e1b9
Absent any knowledge about the hardware, if the backend wants to combine barriers we should try to combine all barriers. Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Reviewed-by: Caio Oliveira <caio.oliveira@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23181>
100 lines
3.3 KiB
C
100 lines
3.3 KiB
C
/*
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* Copyright © 2020 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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#include "nir.h"
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static bool
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combine_all_barriers(nir_intrinsic_instr *a, nir_intrinsic_instr *b, void *_)
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{
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nir_intrinsic_set_memory_modes(
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a, nir_intrinsic_memory_modes(a) | nir_intrinsic_memory_modes(b));
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nir_intrinsic_set_memory_semantics(
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a, nir_intrinsic_memory_semantics(a) | nir_intrinsic_memory_semantics(b));
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nir_intrinsic_set_memory_scope(
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a, MAX2(nir_intrinsic_memory_scope(a), nir_intrinsic_memory_scope(b)));
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nir_intrinsic_set_execution_scope(
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a, MAX2(nir_intrinsic_execution_scope(a), nir_intrinsic_execution_scope(b)));
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return true;
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}
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static bool
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nir_opt_combine_barriers_impl(
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nir_function_impl *impl, nir_combine_barrier_cb combine_cb, void *data)
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{
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bool progress = false;
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nir_foreach_block(block, impl) {
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nir_intrinsic_instr *prev = NULL;
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nir_foreach_instr_safe(instr, block) {
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if (instr->type != nir_instr_type_intrinsic) {
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prev = NULL;
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continue;
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}
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nir_intrinsic_instr *current = nir_instr_as_intrinsic(instr);
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if (current->intrinsic != nir_intrinsic_scoped_barrier) {
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prev = NULL;
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continue;
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}
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if (prev && combine_cb(prev, current, data)) {
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nir_instr_remove(¤t->instr);
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progress = true;
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} else {
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prev = current;
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}
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}
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}
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if (progress) {
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nir_metadata_preserve(impl, nir_metadata_block_index |
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nir_metadata_dominance |
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nir_metadata_live_ssa_defs);
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} else {
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nir_metadata_preserve(impl, nir_metadata_all);
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}
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return progress;
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}
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/* Combine adjacent scoped barriers. */
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bool
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nir_opt_combine_barriers(
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nir_shader *shader, nir_combine_barrier_cb combine_cb, void *data)
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{
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/* Default to combining everything. Only some backends can do better. */
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if (!combine_cb)
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combine_cb = combine_all_barriers;
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bool progress = false;
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nir_foreach_function(function, shader) {
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if (function->impl &&
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nir_opt_combine_barriers_impl(function->impl, combine_cb, data)) {
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progress = true;
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}
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}
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return progress;
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}
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