| 0,0 → 1,142 |
|---|
| /* |
| * Copyright © 2013 Intel 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 "ir.h" |
| #include "ir_builder.h" |
| #include "ir_rvalue_visitor.h" |
| #include "ir_optimization.h" |
| |
| using namespace ir_builder; |
| |
| namespace { |
| |
| class vector_insert_visitor : public ir_rvalue_visitor { |
| public: |
| vector_insert_visitor(bool lower_nonconstant_index) |
| : progress(false), lower_nonconstant_index(lower_nonconstant_index) |
| { |
| factory.instructions = &factory_instructions; |
| } |
| |
| virtual ~vector_insert_visitor() |
| { |
| assert(factory_instructions.is_empty()); |
| } |
| |
| virtual void handle_rvalue(ir_rvalue **rv); |
| |
| ir_factory factory; |
| exec_list factory_instructions; |
| bool progress; |
| bool lower_nonconstant_index; |
| }; |
| |
| } /* anonymous namespace */ |
| |
| void |
| vector_insert_visitor::handle_rvalue(ir_rvalue **rv) |
| { |
| if (*rv == NULL || (*rv)->ir_type != ir_type_expression) |
| return; |
| |
| ir_expression *const expr = (ir_expression *) *rv; |
| |
| if (likely(expr->operation != ir_triop_vector_insert)) |
| return; |
| |
| factory.mem_ctx = ralloc_parent(expr); |
| |
| ir_constant *const idx = expr->operands[2]->constant_expression_value(); |
| if (idx != NULL) { |
| /* Replace (vector_insert (vec) (scalar) (index)) with a dereference of |
| * a new temporary. The new temporary gets assigned as |
| * |
| * t = vec |
| * t.mask = scalar |
| * |
| * where mask is the component selected by index. |
| */ |
| ir_variable *const temp = |
| factory.make_temp(expr->operands[0]->type, "vec_tmp"); |
| |
| const int mask = 1 << idx->value.i[0]; |
| |
| factory.emit(assign(temp, expr->operands[0])); |
| factory.emit(assign(temp, expr->operands[1], mask)); |
| |
| this->progress = true; |
| *rv = new(factory.mem_ctx) ir_dereference_variable(temp); |
| } else if (this->lower_nonconstant_index) { |
| /* Replace (vector_insert (vec) (scalar) (index)) with a dereference of |
| * a new temporary. The new temporary gets assigned as |
| * |
| * t = vec |
| * if (index == 0) |
| * t.x = scalar |
| * if (index == 1) |
| * t.y = scalar |
| * if (index == 2) |
| * t.z = scalar |
| * if (index == 3) |
| * t.w = scalar |
| */ |
| ir_variable *const temp = |
| factory.make_temp(expr->operands[0]->type, "vec_tmp"); |
| |
| ir_variable *const src_temp = |
| factory.make_temp(expr->operands[1]->type, "src_temp"); |
| |
| factory.emit(assign(temp, expr->operands[0])); |
| factory.emit(assign(src_temp, expr->operands[1])); |
| |
| for (unsigned i = 0; i < expr->type->vector_elements; i++) { |
| ir_constant *const cmp_index = |
| new(factory.mem_ctx) ir_constant(int(i)); |
| |
| ir_variable *const cmp_result = |
| factory.make_temp(glsl_type::bool_type, "index_condition"); |
| |
| factory.emit(assign(cmp_result, |
| equal(expr->operands[2]->clone(factory.mem_ctx, |
| NULL), |
| cmp_index))); |
| |
| factory.emit(if_tree(cmp_result, |
| assign(temp, src_temp, WRITEMASK_X << i))); |
| } |
| |
| this->progress = true; |
| *rv = new(factory.mem_ctx) ir_dereference_variable(temp); |
| } |
| |
| base_ir->insert_before(factory.instructions); |
| } |
| |
| bool |
| lower_vector_insert(exec_list *instructions, bool lower_nonconstant_index) |
| { |
| vector_insert_visitor v(lower_nonconstant_index); |
| |
| visit_list_elements(&v, instructions); |
| |
| return v.progress; |
| } |