| /* |
| * 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_function(func, shader) { |
| if (func->impl) |
| strip_impl(func->impl); |
| } |
| } |