| /* |
| * Copyright © 2019 Vasily Khoruzhick <anarsoul@gmail.com> |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| |
| #include "nir.h" |
| #include "nir_builder.h" |
| |
| #include "lima_ir.h" |
| |
| static bool |
| lima_nir_split_load_input_block(nir_block *block, nir_builder *b) |
| { |
| bool progress = false; |
| |
| nir_foreach_instr_safe(instr, block) { |
| if (instr->type != nir_instr_type_alu) |
| continue; |
| |
| nir_alu_instr *alu = nir_instr_as_alu(instr); |
| if (alu->op != nir_op_mov) |
| continue; |
| |
| if (!alu->dest.dest.is_ssa) |
| continue; |
| |
| if (!alu->src[0].src.is_ssa) |
| continue; |
| |
| nir_ssa_def *ssa = alu->src[0].src.ssa; |
| if (ssa->parent_instr->type != nir_instr_type_intrinsic) |
| continue; |
| |
| nir_intrinsic_instr *intrin = nir_instr_as_intrinsic(ssa->parent_instr); |
| if (intrin->intrinsic != nir_intrinsic_load_input) |
| continue; |
| |
| uint8_t swizzle = alu->src[0].swizzle[0]; |
| int i; |
| |
| for (i = 1; i < nir_dest_num_components(alu->dest.dest); i++) |
| if (alu->src[0].swizzle[i] != (swizzle + i)) |
| break; |
| |
| if (i != nir_dest_num_components(alu->dest.dest)) |
| continue; |
| |
| /* mali4xx can't access unaligned vec3, don't split load input */ |
| if (nir_dest_num_components(alu->dest.dest) == 3 && swizzle > 0) |
| continue; |
| |
| b->cursor = nir_before_instr(&intrin->instr); |
| nir_intrinsic_instr *new_intrin = nir_intrinsic_instr_create( |
| b->shader, |
| intrin->intrinsic); |
| nir_ssa_dest_init(&new_intrin->instr, &new_intrin->dest, |
| nir_dest_num_components(alu->dest.dest), |
| ssa->bit_size, |
| NULL); |
| new_intrin->num_components = nir_dest_num_components(alu->dest.dest); |
| nir_intrinsic_set_base(new_intrin, nir_intrinsic_base(intrin)); |
| nir_intrinsic_set_component(new_intrin, nir_intrinsic_component(intrin) + swizzle); |
| nir_intrinsic_set_type(new_intrin, nir_intrinsic_type(intrin)); |
| |
| /* offset */ |
| nir_src_copy(&new_intrin->src[0], &intrin->src[0], new_intrin); |
| |
| nir_builder_instr_insert(b, &new_intrin->instr); |
| nir_ssa_def_rewrite_uses(&alu->dest.dest.ssa, |
| nir_src_for_ssa(&new_intrin->dest.ssa)); |
| nir_instr_remove(&alu->instr); |
| progress = true; |
| } |
| |
| return progress; |
| } |
| |
| static bool |
| lima_nir_split_load_input_impl(nir_function_impl *impl) |
| { |
| bool progress = false; |
| nir_builder builder; |
| nir_builder_init(&builder, impl); |
| |
| nir_foreach_block(block, impl) { |
| progress |= lima_nir_split_load_input_block(block, &builder); |
| } |
| |
| nir_metadata_preserve(impl, nir_metadata_block_index | |
| nir_metadata_dominance); |
| return progress; |
| } |
| |
| /* Replaces a single load of several packed varyings and number of movs with |
| * a number of loads of smaller size |
| */ |
| bool |
| lima_nir_split_load_input(nir_shader *shader) |
| { |
| bool progress = false; |
| |
| nir_foreach_function(function, shader) { |
| if (function->impl) |
| progress |= lima_nir_split_load_input_impl(function->impl); |
| } |
| |
| return progress; |
| } |
| |