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* Copyright © 2019 Vasily Khoruzhick <anarsoul@gmail.com>
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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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* 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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* 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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#include "nir_builder.h"
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lima_nir_split_load_input_instr(nir_builder *b,
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if (instr->type != nir_instr_type_alu)
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nir_alu_instr *alu = nir_instr_as_alu(instr);
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if (alu->op != nir_op_mov)
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if (!alu->dest.dest.is_ssa)
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if (!alu->src[0].src.is_ssa)
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nir_ssa_def *ssa = alu->src[0].src.ssa;
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if (ssa->parent_instr->type != nir_instr_type_intrinsic)
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nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(ssa->parent_instr);
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if (intrin->intrinsic != nir_intrinsic_load_input)
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uint8_t swizzle = alu->src[0].swizzle[0];
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for (i = 1; i < nir_dest_num_components(alu->dest.dest); i++)
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if (alu->src[0].swizzle[i] != (swizzle + i))
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if (i != nir_dest_num_components(alu->dest.dest))
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/* mali4xx can't access unaligned vec3, don't split load input */
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if (nir_dest_num_components(alu->dest.dest) == 3 && swizzle > 0)
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/* mali4xx can't access unaligned vec2, don't split load input */
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if (nir_dest_num_components(alu->dest.dest) == 2 &&
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swizzle != 0 && swizzle != 2)
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b->cursor = nir_before_instr(&intrin->instr);
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nir_intrinsic_instr *new_intrin = nir_intrinsic_instr_create(
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nir_ssa_dest_init(&new_intrin->instr, &new_intrin->dest,
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nir_dest_num_components(alu->dest.dest),
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new_intrin->num_components = nir_dest_num_components(alu->dest.dest);
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nir_intrinsic_set_base(new_intrin, nir_intrinsic_base(intrin));
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nir_intrinsic_set_component(new_intrin, nir_intrinsic_component(intrin) + swizzle);
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nir_intrinsic_set_dest_type(new_intrin, nir_intrinsic_dest_type(intrin));
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nir_src_copy(&new_intrin->src[0], &intrin->src[0]);
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nir_builder_instr_insert(b, &new_intrin->instr);
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nir_ssa_def_rewrite_uses(&alu->dest.dest.ssa,
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&new_intrin->dest.ssa);
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nir_instr_remove(&alu->instr);
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/* Replaces a single load of several packed varyings and number of movs with
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* a number of loads of smaller size
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lima_nir_split_load_input(nir_shader *shader)
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return nir_shader_instructions_pass(shader, lima_nir_split_load_input_instr,
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nir_metadata_block_index |
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nir_metadata_dominance,