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authorChristian Parpart <christian@parpart.family>2018-10-15 18:30:00 +0800
committerGitHub <noreply@github.com>2018-10-15 18:30:00 +0800
commitb2b845d6def4d28215c5d591589555bd8f4ea6ab (patch)
treea8501e929c94a7d36e69a6350e98c68556fe9038 /libjulia/optimiser/CommonSubexpressionEliminator.cpp
parentb965fd6e17f77e94afeb070a27182251b85b8ab3 (diff)
parent1304361b9c48438d5c55903492b5f11c3dac73e5 (diff)
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Merge pull request #5220 from ethereum/libjulia-to-libyul
Renames `libjulia` directory to `libyul` & namespace `dev::julia` to `dev::yul`
Diffstat (limited to 'libjulia/optimiser/CommonSubexpressionEliminator.cpp')
-rw-r--r--libjulia/optimiser/CommonSubexpressionEliminator.cpp71
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;
- }
- }
- }
-}