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873fcdff38
s/BRW_REGISTER_TYPE/BRW_TYPE/g Reviewed-by: Caio Oliveira <caio.oliveira@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28847>
85 lines
2.9 KiB
C++
85 lines
2.9 KiB
C++
/*
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* Copyright © 2015 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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#include "util/half_float.h"
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#include "brw_fs.h"
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#include "brw_cfg.h"
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#include "brw_fs_builder.h"
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using namespace brw;
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bool
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brw_fs_lower_pack(fs_visitor &s)
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{
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bool progress = false;
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foreach_block_and_inst_safe(block, fs_inst, inst, s.cfg) {
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if (inst->opcode != FS_OPCODE_PACK &&
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inst->opcode != FS_OPCODE_PACK_HALF_2x16_SPLIT)
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continue;
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assert(inst->dst.file == VGRF);
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assert(inst->saturate == false);
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fs_reg dst = inst->dst;
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const fs_builder ibld(&s, block, inst);
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/* The lowering generates 2 instructions for what was previously 1. This
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* can trick the IR to believe we're doing partial writes, but the
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* register is actually fully written. Mark it as undef to help the IR
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* reduce the liveness of the register.
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*/
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if (!inst->is_partial_write())
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ibld.emit_undef_for_dst(inst);
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switch (inst->opcode) {
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case FS_OPCODE_PACK:
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for (unsigned i = 0; i < inst->sources; i++)
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ibld.MOV(subscript(dst, inst->src[i].type, i), inst->src[i]);
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break;
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case FS_OPCODE_PACK_HALF_2x16_SPLIT:
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assert(dst.type == BRW_TYPE_UD);
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for (unsigned i = 0; i < inst->sources; i++) {
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if (inst->src[i].file == IMM) {
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const uint32_t half = _mesa_float_to_half(inst->src[i].f);
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ibld.MOV(subscript(dst, BRW_TYPE_UW, i),
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brw_imm_uw(half));
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} else {
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ibld.MOV(subscript(dst, BRW_TYPE_HF, i),
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inst->src[i]);
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}
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}
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break;
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default:
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unreachable("skipped above");
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}
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inst->remove(block);
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progress = true;
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}
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if (progress)
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s.invalidate_analysis(DEPENDENCY_INSTRUCTIONS);
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return progress;
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}
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