/* * Copyright © 2019 Valve Corporation * * 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 "util/debug.h" /* This pass removes information which is only useful for debugging, * making cache hits from similar shaders more likely. */ static void strip_variable(nir_variable *var) { var->name = NULL; if (var->data.mode != nir_var_shader_in && var->data.mode != nir_var_shader_out) { /* We assume that this is called after nir_lower_io(), at which point * the original user-facing location is irrelevant except for inputs and * outputs. */ var->data.location = 0; } } static void strip_register(nir_register *reg) { reg->name = NULL; } static bool strip_def(nir_ssa_def *def, void *_unused) { (void) _unused; def->name = NULL; return true; } static void strip_impl(nir_function_impl *impl) { nir_index_ssa_defs(impl); nir_foreach_variable(var, &impl->locals) strip_variable(var); nir_foreach_register(reg, &impl->registers) strip_register(reg); nir_foreach_block(block, impl) { nir_foreach_instr(instr, block) { nir_foreach_ssa_def(instr, strip_def, NULL); } } } void nir_strip(nir_shader *shader) { static int should_strip = -1; if (should_strip < 0) should_strip = env_var_as_boolean("NIR_STRIP", true); if (!should_strip) return; shader->info.name = NULL; shader->info.label = NULL; nir_foreach_variable(var, &shader->uniforms) strip_variable(var); nir_foreach_variable(var, &shader->inputs) strip_variable(var); nir_foreach_variable(var, &shader->outputs) strip_variable(var); nir_foreach_variable(var, &shader->system_values) strip_variable(var); nir_foreach_variable(var, &shader->globals) strip_variable(var); nir_foreach_register(reg, &shader->registers) strip_register(reg); nir_foreach_function(func, shader) { if (func->impl) strip_impl(func->impl); } }