1f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* 2f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Copyright © 2010 Intel Corporation 3f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 4f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Permission is hereby granted, free of charge, to any person obtaining a 5f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * copy of this software and associated documentation files (the "Software"), 6f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * to deal in the Software without restriction, including without limitation 7f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * and/or sell copies of the Software, and to permit persons to whom the 9f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Software is furnished to do so, subject to the following conditions: 10f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 11f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * The above copyright notice and this permission notice (including the next 12f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * paragraph) shall be included in all copies or substantial portions of the 13f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * Software. 14f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 15f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * DEALINGS IN THE SOFTWARE. 22f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 23f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 24f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/** 25f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * \file opt_noop_swizzle.cpp 26f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * 27f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * If a swizzle doesn't change the order or count of components, then 28f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * remove the swizzle so that other optimization passes see the value 29f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org * behind it. 30f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org */ 31f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 32f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "ir.h" 33f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "ir_visitor.h" 34f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "ir_rvalue_visitor.h" 35f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "ir_print_visitor.h" 36f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "glsl_types.h" 37f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 38f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgnamespace { 39f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 40f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgclass ir_noop_swizzle_visitor : public ir_rvalue_visitor { 41f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgpublic: 42f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ir_noop_swizzle_visitor() 43f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org { 44f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org this->progress = false; 45f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 46f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 47f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org void handle_rvalue(ir_rvalue **rvalue); 48f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org bool progress; 49f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org}; 50f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 51f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} /* unnamed namespace */ 52f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 53f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 54f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgir_noop_swizzle_visitor::handle_rvalue(ir_rvalue **rvalue) 55f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 56f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (!*rvalue) 57f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return; 58f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 59f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ir_swizzle *swiz = (*rvalue)->as_swizzle(); 60f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (!swiz || swiz->type != swiz->val->type) 61f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return; 62f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 63f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org int elems = swiz->val->type->vector_elements; 64f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (swiz->mask.x != 0) 65f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return; 66f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (elems >= 2 && swiz->mask.y != 1) 67f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return; 68f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (elems >= 3 && swiz->mask.z != 2) 69f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return; 70f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (elems >= 4 && swiz->mask.w != 3) 71f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return; 72f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 73f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org this->progress = true; 74f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org *rvalue = swiz->val; 75f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 76f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 77f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgbool 78f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgdo_noop_swizzle(exec_list *instructions) 79f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 80f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org ir_noop_swizzle_visitor v; 81f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org visit_list_elements(&v, instructions); 82f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 83f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return v.progress; 84f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 85