mirror of
https://github.com/TorqueGameEngines/Torque3D.git
synced 2026-01-20 04:34:48 +00:00
104 lines
3.1 KiB
C++
104 lines
3.1 KiB
C++
//-----------------------------------------------------------------------------
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// Copyright (c) 2013 GarageGames, LLC
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// Copyright (c) 2021 TGEMIT Authors & Contributors
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//-----------------------------------------------------------------------------
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#include "codeBlock.h"
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static bool isLiteralNumber(ExprNode* node)
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{
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ExprNodeName name = node->getExprNodeNameEnum();
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return name == NameFloatNode || name == NameIntNode;
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}
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static F64 getFloatValue(ExprNode* node)
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{
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if (node->getExprNodeNameEnum() == NameFloatNode)
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return static_cast<FloatNode*>(node)->value;
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return (F64)static_cast<IntNode*>(node)->value;
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}
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static S32 getIntValue(ExprNode* node)
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{
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if (node->getExprNodeNameEnum() == NameFloatNode)
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return (S32)static_cast<FloatNode*>(node)->value;
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return static_cast<IntNode*>(node)->value;
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}
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bool FloatBinaryExprNode::optimize()
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{
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// Perform constant folding
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if (isLiteralNumber(right) && isLiteralNumber(left))
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{
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F64 rightValue = getFloatValue(right);
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F64 leftValue = getFloatValue(left);
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F64 result = 0.0;
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switch (op)
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{
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case '+':
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result = leftValue + rightValue;
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break;
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case '-':
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result = leftValue - rightValue;
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break;
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case '*':
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result = leftValue * rightValue;
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break;
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case '/':
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if (rightValue != 0.0)
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result = leftValue / rightValue;
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break;
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}
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optimizedNode = FloatNode::alloc(dbgLineNumber, result);
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return true;
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}
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return false;
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}
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bool IntBinaryExprNode::optimize()
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{
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if (op == '%' && left->getExprNodeNameEnum() == NameVarNode && isLiteralNumber(right))
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{
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// %a % intconst
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S32 val = getIntValue(right);
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switch (val)
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{
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case 2:
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op = '&';
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optimizedNode = IntNode::alloc(dbgLineNumber, 1);
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return true;
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case 4:
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op = '&';
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optimizedNode = IntNode::alloc(dbgLineNumber, 3);
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return true;
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case 8:
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op = '&';
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optimizedNode = IntNode::alloc(dbgLineNumber, 7);
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return true;
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}
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}
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return false;
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}
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