mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
73 lines
2.2 KiB
C++
73 lines
2.2 KiB
C++
/*
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This file is part of solidity.
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solidity 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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solidity 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 solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* Optimiser component that performs function inlining inside expressions.
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*/
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#include <libyul/optimiser/ExpressionInliner.h>
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#include <libyul/optimiser/InlinableExpressionFunctionFinder.h>
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#include <libyul/optimiser/Substitution.h>
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#include <libyul/optimiser/Semantics.h>
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#include <libyul/AsmData.h>
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#include <boost/algorithm/cxx11/all_of.hpp>
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using namespace std;
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using namespace dev;
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using namespace yul;
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void ExpressionInliner::run()
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{
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InlinableExpressionFunctionFinder funFinder;
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funFinder(m_block);
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m_inlinableFunctions = funFinder.inlinableFunctions();
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(*this)(m_block);
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}
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void ExpressionInliner::operator()(FunctionDefinition& _fun)
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{
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ASTModifier::operator()(_fun);
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}
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void ExpressionInliner::visit(Expression& _expression)
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{
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ASTModifier::visit(_expression);
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if (_expression.type() == typeid(FunctionCall))
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{
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FunctionCall& funCall = boost::get<FunctionCall>(_expression);
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bool movable = boost::algorithm::all_of(
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funCall.arguments,
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[=](Expression const& _arg) { return SideEffectsCollector(m_dialect, _arg).movable(); }
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);
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if (m_inlinableFunctions.count(funCall.functionName.name) && movable)
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{
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FunctionDefinition const& fun = *m_inlinableFunctions.at(funCall.functionName.name);
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map<YulString, Expression const*> substitutions;
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for (size_t i = 0; i < fun.parameters.size(); ++i)
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substitutions[fun.parameters[i].name] = &funCall.arguments[i];
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_expression = Substitution(substitutions).translate(*boost::get<Assignment>(fun.body.statements.front()).value);
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// TODO Add metric! This metric should perform well on a pair of functions who
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// call each other recursively.
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}
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}
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}
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