mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
111 lines
3.3 KiB
C++
111 lines
3.3 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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* @author Alex Beregszaszi
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* @date 2017
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* Helper class for optimiser settings.
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*/
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#pragma once
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#include <cstddef>
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namespace dev
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{
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namespace solidity
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{
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struct OptimiserSettings
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{
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/// No optimisations at all - not recommended.
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static OptimiserSettings none()
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{
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return {};
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}
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/// Minimal optimisations: Peephole and jumpdest remover
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static OptimiserSettings minimal()
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{
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OptimiserSettings s = none();
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s.runJumpdestRemover = true;
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s.runPeephole = true;
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return s;
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}
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/// Standard optimisations.
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static OptimiserSettings enabled()
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{
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OptimiserSettings s;
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s.runOrderLiterals = true;
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s.runJumpdestRemover = true;
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s.runPeephole = true;
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s.runDeduplicate = true;
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s.runCSE = true;
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s.runConstantOptimiser = true;
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// The only disabled ones
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s.optimizeStackAllocation = false;
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s.runYulOptimiser = false;
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s.expectedExecutionsPerDeployment = 200;
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return s;
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}
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/// Standard optimisations plus yul and stack optimiser.
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static OptimiserSettings full()
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{
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OptimiserSettings s = enabled();
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s.optimizeStackAllocation = true;
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s.runYulOptimiser = true;
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return s;
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}
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bool operator==(OptimiserSettings const& _other) const
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{
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return
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runOrderLiterals == _other.runOrderLiterals &&
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runJumpdestRemover == _other.runJumpdestRemover &&
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runPeephole == _other.runPeephole &&
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runDeduplicate == _other.runDeduplicate &&
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runCSE == _other.runCSE &&
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runConstantOptimiser == _other.runConstantOptimiser &&
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optimizeStackAllocation == _other.optimizeStackAllocation &&
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runYulOptimiser == _other.runYulOptimiser &&
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expectedExecutionsPerDeployment == _other.expectedExecutionsPerDeployment;
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}
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/// Move literals to the right of commutative binary operators during code generation.
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/// This helps exploiting associativity.
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bool runOrderLiterals = false;
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/// Non-referenced jump destination remover.
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bool runJumpdestRemover = false;
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/// Peephole optimizer
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bool runPeephole = false;
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/// Assembly block deduplicator
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bool runDeduplicate = false;
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/// Common subexpression eliminator based on assembly items.
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bool runCSE = false;
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/// Constant optimizer, which tries to find better representations that satisfy the given
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/// size/cost-trade-off.
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bool runConstantOptimiser = false;
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/// Perform more efficient stack allocation for variables during code generation from Yul to bytecode.
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bool optimizeStackAllocation = false;
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/// Yul optimiser with default settings. Will only run on certain parts of the code for now.
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bool runYulOptimiser = false;
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/// This specifies an estimate on how often each opcode in this assembly will be executed,
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/// i.e. use a small value to optimise for size and a large value to optimise for runtime gas usage.
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size_t expectedExecutionsPerDeployment = 200;
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};
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}
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}
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