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51 lines
1.5 KiB
51 lines
1.5 KiB
10 years ago
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/*
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This file is part of cpp-ethereum.
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cpp-ethereum is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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cpp-ethereum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file SemanticInformation.h
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* @author Christian <c@ethdev.com>
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* @date 2015
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* Helper to provide semantic information about assembly items.
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*/
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#pragma once
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namespace dev
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{
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namespace eth
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{
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class AssemblyItem;
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/**
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* Helper functions to provide context-independent information about assembly items.
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*/
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struct SemanticInformation
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{
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/// @returns true if the given items starts a new block for common subexpression analysis.
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static bool breaksCSEAnalysisBlock(AssemblyItem const& _item);
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/// @returns true if the item is a two-argument operation whose value does not depend on the
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/// order of its arguments.
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static bool isCommutativeOperation(AssemblyItem const& _item);
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static bool isDupInstruction(AssemblyItem const& _item);
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static bool isSwapInstruction(AssemblyItem const& _item);
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static bool isJumpInstruction(AssemblyItem const& _item);
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};
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}
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}
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