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73 lines
1.7 KiB
C++
73 lines
1.7 KiB
C++
/*
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* Copyright © 2024 Intel Corporation
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* SPDX-License-Identifier: MIT
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*/
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#include "brw_shader.h"
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#include "brw_builder.h"
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#include "brw_cfg.h"
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#include "brw_eu.h"
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/** @file
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*
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* Turn this sequence :
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*
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* add(8) vgrf64:UD, vgrf63:UD, 192u
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* mov(1) a0.4:UD, vgrf64+0.0<0>:UD
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*
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* into :
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*
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* add(1) a0.4:UD, vgrf63+0.0<0>:UD, 192u
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*/
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static bool
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opt_address_reg_load_local(brw_shader &s, bblock_t *block, const brw_def_analysis &defs)
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{
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bool progress = false;
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foreach_inst_in_block_safe(brw_inst, inst, block) {
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if (!inst->dst.is_address() || inst->opcode != BRW_OPCODE_MOV)
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continue;
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brw_inst *src_inst = defs.get(inst->src[0]);
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if (src_inst == NULL)
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continue;
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if (src_inst->uses_address_register_implicitly() ||
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src_inst->sources > 2)
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continue;
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brw_builder ubld = brw_builder(&s).at(block, inst).exec_all().group(1, 0);
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brw_reg sources[3];
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for (unsigned i = 0; i < src_inst->sources; i++) {
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sources[i] = inst->src[i].file == VGRF ? component(src_inst->src[i], 0) : src_inst->src[i];
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}
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ubld.emit(src_inst->opcode, inst->dst, sources, src_inst->sources);
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inst->remove(block);
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progress = true;
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}
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return progress;
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}
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bool
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brw_opt_address_reg_load(brw_shader &s)
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{
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bool progress = false;
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const brw_def_analysis &defs = s.def_analysis.require();
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foreach_block(block, s.cfg) {
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foreach_inst_in_block_safe(brw_inst, inst, block) {
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progress = opt_address_reg_load_local(s, block, defs) || progress;
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}
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}
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if (progress) {
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s.cfg->adjust_block_ips();
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s.invalidate_analysis(BRW_DEPENDENCY_INSTRUCTIONS);
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}
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return progress;
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}
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