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/**************************************************************************
*
* Copyright 2019 Red Hat.
* All Rights Reserved.
*
* 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 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 "lp_bld_nir.h"
#include "nir.h"
/* do some basic opts to remove some things we don't want to see. */
void
lp_build_opt_nir(struct nir_shader *nir)
{
bool progress;
static const struct nir_lower_tex_options lower_tex_options = {
.lower_tg4_offsets = true,
.lower_txp = ~0u,
.lower_invalid_implicit_lod = true,
};
NIR_PASS(_, nir, nir_lower_tex, &lower_tex_options);
NIR_PASS(_, nir, nir_lower_frexp);
if (nir->info.stage == MESA_SHADER_TASK) {
nir_lower_task_shader_options ts_opts = { 0 };
NIR_PASS(_, nir, nir_lower_task_shader, ts_opts);
}
if (nir->info.stage == MESA_SHADER_FRAGMENT) {
bool demote_progress = false;
NIR_PASS(demote_progress, nir, nir_lower_terminate_to_demote);
if (demote_progress) {
NIR_PASS(_, nir, nir_lower_halt_to_return);
NIR_PASS(_, nir, nir_lower_returns);
NIR_PASS(_, nir, nir_opt_dead_cf);
}
}
NIR_PASS(_, nir, nir_lower_flrp, 16|32|64, true);
NIR_PASS(_, nir, nir_lower_fp16_casts, nir_lower_fp16_all | nir_lower_fp16_split_fp64);
NIR_PASS(_, nir, nir_lower_alu);
do {
progress = false;
NIR_PASS(progress, nir, nir_opt_constant_folding);
NIR_PASS(progress, nir, nir_opt_algebraic);
NIR_PASS(progress, nir, nir_lower_pack);
nir_lower_tex_options options = { .lower_invalid_implicit_lod = true, };
NIR_PASS(_, nir, nir_lower_tex, &options);
const nir_lower_subgroups_options subgroups_options = {
.subgroup_size = lp_native_vector_width / 32,
.ballot_bit_size = 32,
.ballot_components = 1,
.lower_to_scalar = true,
.lower_subgroup_masks = true,
.lower_relative_shuffle = true,
.lower_inverse_ballot = true,
};
NIR_PASS(progress, nir, nir_lower_subgroups, &subgroups_options);
} while (progress);
do {
progress = false;
NIR_PASS(progress, nir, nir_opt_algebraic_late);
if (progress) {
NIR_PASS(_, nir, nir_copy_prop);
NIR_PASS(_, nir, nir_opt_dce);
NIR_PASS(_, nir, nir_opt_cse);
}
} while (progress);
}
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