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author | Christian Parpart <christian@ethereum.org> | 2018-10-15 17:52:35 +0800 |
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committer | Christian Parpart <christian@ethereum.org> | 2018-10-15 17:52:35 +0800 |
commit | 9a4bec7e474a310c7f93ff3b84928e0e9ba9cce6 (patch) | |
tree | 2668ab22a40aad2448081f7bf22c7235d4b4c963 /libjulia/optimiser/CommonSubexpressionEliminator.cpp | |
parent | b965fd6e17f77e94afeb070a27182251b85b8ab3 (diff) | |
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Renaming libjulia to libyul
Diffstat (limited to 'libjulia/optimiser/CommonSubexpressionEliminator.cpp')
-rw-r--r-- | libjulia/optimiser/CommonSubexpressionEliminator.cpp | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/libjulia/optimiser/CommonSubexpressionEliminator.cpp b/libjulia/optimiser/CommonSubexpressionEliminator.cpp deleted file mode 100644 index 458b3437..00000000 --- a/libjulia/optimiser/CommonSubexpressionEliminator.cpp +++ /dev/null @@ -1,71 +0,0 @@ -/*( - 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/>. -*/ -/** - * Optimisation stage that replaces expressions known to be the current value of a variable - * in scope by a reference to that variable. - */ - -#include <libjulia/optimiser/CommonSubexpressionEliminator.h> - -#include <libjulia/optimiser/Metrics.h> -#include <libjulia/optimiser/SyntacticalEquality.h> -#include <libjulia/Exceptions.h> - -#include <libsolidity/inlineasm/AsmData.h> - -using namespace std; -using namespace dev; -using namespace dev::julia; - -void CommonSubexpressionEliminator::visit(Expression& _e) -{ - // We visit the inner expression first to first simplify inner expressions, - // which hopefully allows more matches. - // Note that the DataFlowAnalyzer itself only has code for visiting Statements, - // so this basically invokes the AST walker directly and thus post-visiting - // is also fine with regards to data flow analysis. - DataFlowAnalyzer::visit(_e); - - if (_e.type() == typeid(Identifier)) - { - Identifier& identifier = boost::get<Identifier>(_e); - string const& name = identifier.name; - if (m_value.count(name)) - { - assertThrow(m_value.at(name), OptimizerException, ""); - if (m_value.at(name)->type() == typeid(Identifier)) - { - string const& value = boost::get<Identifier>(*m_value.at(name)).name; - if (inScope(value)) - _e = Identifier{locationOf(_e), value}; - } - } - } - else - { - // TODO this search is rather inefficient. - for (auto const& var: m_value) - { - assertThrow(var.second, OptimizerException, ""); - if (SyntacticalEqualityChecker::equal(_e, *var.second)) - { - _e = Identifier{locationOf(_e), var.first}; - break; - } - } - } -} |