solidity/libyul/optimiser/FunctionGrouper.h

55 lines
1.5 KiB
C++

/*
This file is part of solidity.
solidity is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
solidity is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with solidity. If not, see <http://www.gnu.org/licenses/>.
*/
// SPDX-License-Identifier: GPL-3.0
/**
* Optimiser component that changes the code of a black so that all non-function definition
* instructions are moved to a block of their own followed by all function definitions.
*/
#pragma once
#include <libyul/AsmDataForward.h>
namespace solidity::yul
{
struct OptimiserStepContext;
/**
* Moves all instructions in a block into a new block at the start of the block, followed by
* all function definitions.
*
* After this step, a block is of the form
* { { I...} F... }
* Where I are (non-function-definition) instructions and F are function definitions.
*/
class FunctionGrouper
{
public:
static constexpr char const* name{"FunctionGrouper"};
static void run(OptimiserStepContext&, Block& _ast) { FunctionGrouper{}(_ast); }
void operator()(Block& _block);
private:
FunctionGrouper() = default;
bool alreadyGrouped(Block const& _block);
};
}