Moving files from libsolidity/inlineasm/*.{cpp,h} to libyul/.

16 files changed, 0 insertions, 2726 deletions

diff --git a/libsolidity/inlineasm/AsmAnalysis.cpp b/libsolidity/inlineasm/AsmAnalysis.cpp
deleted file mode 100644
index fb96f73c..00000000
--- a/libsolidity/inlineasm/AsmAnalysis.cpp
+++ /dev/null
@@ -1,631 +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/>.
-*/
-/**
- * Analyzer part of inline assembly.
- */
-
-#include <libsolidity/inlineasm/AsmAnalysis.h>
-
-#include <libsolidity/inlineasm/AsmData.h>
-#include <libsolidity/inlineasm/AsmScopeFiller.h>
-#include <libsolidity/inlineasm/AsmScope.h>
-#include <libsolidity/inlineasm/AsmAnalysisInfo.h>
-
-#include <liblangutil/ErrorReporter.h>
-
-#include <boost/range/adaptor/reversed.hpp>
-#include <boost/algorithm/string.hpp>
-
-#include <memory>
-#include <functional>
-
-using namespace std;
-using namespace dev;
-using namespace langutil;
-using namespace dev::solidity;
-using namespace dev::solidity::assembly;
-
-namespace {
-
-set<string> const builtinTypes{"bool", "u8", "s8", "u32", "s32", "u64", "s64", "u128", "s128", "u256", "s256"};
-
-}
-
-bool AsmAnalyzer::analyze(Block const& _block)
-{
-	if (!(ScopeFiller(m_info, m_errorReporter))(_block))
-		return false;
-
-	return (*this)(_block);
-}
-
-bool AsmAnalyzer::operator()(Label const& _label)
-{
-	solAssert(!_label.name.empty(), "");
-	checkLooseFeature(
-		_label.location,
-		"The use of labels is disallowed. Please use \"if\", \"switch\", \"for\" or function calls instead."
-	);
-	m_info.stackHeightInfo[&_label] = m_stackHeight;
-	warnOnInstructions(solidity::Instruction::JUMPDEST, _label.location);
-	return true;
-}
-
-bool AsmAnalyzer::operator()(assembly::Instruction const& _instruction)
-{
-	checkLooseFeature(
-		_instruction.location,
-		"The use of non-functional instructions is disallowed. Please use functional notation instead."
-	);
-	auto const& info = instructionInfo(_instruction.instruction);
-	m_stackHeight += info.ret - info.args;
-	m_info.stackHeightInfo[&_instruction] = m_stackHeight;
-	warnOnInstructions(_instruction.instruction, _instruction.location);
-	return true;
-}
-
-bool AsmAnalyzer::operator()(assembly::Literal const& _literal)
-{
-	expectValidType(_literal.type.str(), _literal.location);
-	++m_stackHeight;
-	if (_literal.kind == assembly::LiteralKind::String && _literal.value.str().size() > 32)
-	{
-		m_errorReporter.typeError(
-			_literal.location,
-			"String literal too long (" + to_string(_literal.value.str().size()) + " > 32)"
-		);
-		return false;
-	}
-	else if (_literal.kind == assembly::LiteralKind::Number && bigint(_literal.value.str()) > u256(-1))
-	{
-		m_errorReporter.typeError(
-			_literal.location,
-			"Number literal too large (> 256 bits)"
-		);
-		return false;
-	}
-	else if (_literal.kind == assembly::LiteralKind::Boolean)
-	{
-		solAssert(m_flavour == AsmFlavour::Yul, "");
-		solAssert(_literal.value == YulString{string("true")} || _literal.value == YulString{string("false")}, "");
-	}
-	m_info.stackHeightInfo[&_literal] = m_stackHeight;
-	return true;
-}
-
-bool AsmAnalyzer::operator()(assembly::Identifier const& _identifier)
-{
-	solAssert(!_identifier.name.empty(), "");
-	size_t numErrorsBefore = m_errorReporter.errors().size();
-	bool success = true;
-	if (m_currentScope->lookup(_identifier.name, Scope::Visitor(
-		[&](Scope::Variable const& _var)
-		{
-			if (!m_activeVariables.count(&_var))
-			{
-				m_errorReporter.declarationError(
-					_identifier.location,
-					"Variable " + _identifier.name.str() + " used before it was declared."
-				);
-				success = false;
-			}
-			++m_stackHeight;
-		},
-		[&](Scope::Label const&)
-		{
-			++m_stackHeight;
-		},
-		[&](Scope::Function const&)
-		{
-			m_errorReporter.typeError(
-				_identifier.location,
-				"Function " + _identifier.name.str() + " used without being called."
-			);
-			success = false;
-		}
-	)))
-	{
-	}
-	else
-	{
-		size_t stackSize(-1);
-		if (m_resolver)
-		{
-			bool insideFunction = m_currentScope->insideFunction();
-			stackSize = m_resolver(_identifier, yul::IdentifierContext::RValue, insideFunction);
-		}
-		if (stackSize == size_t(-1))
-		{
-			// Only add an error message if the callback did not do it.
-			if (numErrorsBefore == m_errorReporter.errors().size())
-				m_errorReporter.declarationError(_identifier.location, "Identifier not found.");
-			success = false;
-		}
-		m_stackHeight += stackSize == size_t(-1) ? 1 : stackSize;
-	}
-	m_info.stackHeightInfo[&_identifier] = m_stackHeight;
-	return success;
-}
-
-bool AsmAnalyzer::operator()(FunctionalInstruction const& _instr)
-{
-	solAssert(m_flavour != AsmFlavour::Yul, "");
-	bool success = true;
-	for (auto const& arg: _instr.arguments | boost::adaptors::reversed)
-		if (!expectExpression(arg))
-			success = false;
-	// Parser already checks that the number of arguments is correct.
-	auto const& info = instructionInfo(_instr.instruction);
-	solAssert(info.args == int(_instr.arguments.size()), "");
-	m_stackHeight += info.ret - info.args;
-	m_info.stackHeightInfo[&_instr] = m_stackHeight;
-	warnOnInstructions(_instr.instruction, _instr.location);
-	return success;
-}
-
-bool AsmAnalyzer::operator()(assembly::ExpressionStatement const& _statement)
-{
-	int initialStackHeight = m_stackHeight;
-	bool success = boost::apply_visitor(*this, _statement.expression);
-	if (m_stackHeight != initialStackHeight && (m_flavour != AsmFlavour::Loose || m_errorTypeForLoose))
-	{
-		Error::Type errorType = m_flavour == AsmFlavour::Loose ? *m_errorTypeForLoose : Error::Type::TypeError;
-		string msg =
-			"Top-level expressions are not supposed to return values (this expression returns " +
-			to_string(m_stackHeight - initialStackHeight) +
-			" value" +
-			(m_stackHeight - initialStackHeight == 1 ? "" : "s") +
-			"). Use ``pop()`` or assign them.";
-		m_errorReporter.error(errorType, _statement.location, msg);
-		if (errorType != Error::Type::Warning)
-			success = false;
-	}
-	m_info.stackHeightInfo[&_statement] = m_stackHeight;
-	return success;
-}
-
-bool AsmAnalyzer::operator()(assembly::StackAssignment const& _assignment)
-{
-	checkLooseFeature(
-		_assignment.location,
-		"The use of stack assignment is disallowed. Please use assignment in functional notation instead."
-	);
-	bool success = checkAssignment(_assignment.variableName, size_t(-1));
-	m_info.stackHeightInfo[&_assignment] = m_stackHeight;
-	return success;
-}
-
-bool AsmAnalyzer::operator()(assembly::Assignment const& _assignment)
-{
-	solAssert(_assignment.value, "");
-	int const expectedItems = _assignment.variableNames.size();
-	solAssert(expectedItems >= 1, "");
-	int const stackHeight = m_stackHeight;
-	bool success = boost::apply_visitor(*this, *_assignment.value);
-	if ((m_stackHeight - stackHeight) != expectedItems)
-	{
-		m_errorReporter.declarationError(
-			_assignment.location,
-			"Variable count does not match number of values (" +
-			to_string(expectedItems) +
-			" vs. " +
-			to_string(m_stackHeight - stackHeight) +
-			")"
-		);
-		return false;
-	}
-	for (auto const& variableName: _assignment.variableNames)
-		if (!checkAssignment(variableName, 1))
-			success = false;
-	m_info.stackHeightInfo[&_assignment] = m_stackHeight;
-	return success;
-}
-
-bool AsmAnalyzer::operator()(assembly::VariableDeclaration const& _varDecl)
-{
-	bool success = true;
-	int const numVariables = _varDecl.variables.size();
-	if (_varDecl.value)
-	{
-		int const stackHeight = m_stackHeight;
-		success = boost::apply_visitor(*this, *_varDecl.value);
-		if ((m_stackHeight - stackHeight) != numVariables)
-		{
-			m_errorReporter.declarationError(_varDecl.location, "Variable count mismatch.");
-			return false;
-		}
-	}
-	else
-		m_stackHeight += numVariables;
-
-	for (auto const& variable: _varDecl.variables)
-	{
-		expectValidType(variable.type.str(), variable.location);
-		m_activeVariables.insert(&boost::get<Scope::Variable>(m_currentScope->identifiers.at(variable.name)));
-	}
-	m_info.stackHeightInfo[&_varDecl] = m_stackHeight;
-	return success;
-}
-
-bool AsmAnalyzer::operator()(assembly::FunctionDefinition const& _funDef)
-{
-	solAssert(!_funDef.name.empty(), "");
-	Block const* virtualBlock = m_info.virtualBlocks.at(&_funDef).get();
-	solAssert(virtualBlock, "");
-	Scope& varScope = scope(virtualBlock);
-	for (auto const& var: _funDef.parameters + _funDef.returnVariables)
-	{
-		expectValidType(var.type.str(), var.location);
-		m_activeVariables.insert(&boost::get<Scope::Variable>(varScope.identifiers.at(var.name)));
-	}
-
-	int const stackHeight = m_stackHeight;
-	m_stackHeight = _funDef.parameters.size() + _funDef.returnVariables.size();
-
-	bool success = (*this)(_funDef.body);
-
-	m_stackHeight = stackHeight;
-	m_info.stackHeightInfo[&_funDef] = m_stackHeight;
-	return success;
-}
-
-bool AsmAnalyzer::operator()(assembly::FunctionCall const& _funCall)
-{
-	solAssert(!_funCall.functionName.name.empty(), "");
-	bool success = true;
-	size_t arguments = 0;
-	size_t returns = 0;
-	if (!m_currentScope->lookup(_funCall.functionName.name, Scope::Visitor(
-		[&](Scope::Variable const&)
-		{
-			m_errorReporter.typeError(
-				_funCall.functionName.location,
-				"Attempt to call variable instead of function."
-			);
-			success = false;
-		},
-		[&](Scope::Label const&)
-		{
-			m_errorReporter.typeError(
-				_funCall.functionName.location,
-				"Attempt to call label instead of function."
-			);
-			success = false;
-		},
-		[&](Scope::Function const& _fun)
-		{
-			/// TODO: compare types too
-			arguments = _fun.arguments.size();
-			returns = _fun.returns.size();
-		}
-	)))
-	{
-		m_errorReporter.declarationError(_funCall.functionName.location, "Function not found.");
-		success = false;
-	}
-	if (success)
-	{
-		if (_funCall.arguments.size() != arguments)
-		{
-			m_errorReporter.typeError(
-				_funCall.functionName.location,
-				"Expected " + to_string(arguments) + " arguments but got " +
-				to_string(_funCall.arguments.size()) + "."
-			);
-			success = false;
-		}
-	}
-	for (auto const& arg: _funCall.arguments | boost::adaptors::reversed)
-		if (!expectExpression(arg))
-			success = false;
-	m_stackHeight += int(returns) - int(arguments);
-	m_info.stackHeightInfo[&_funCall] = m_stackHeight;
-	return success;
-}
-
-bool AsmAnalyzer::operator()(If const& _if)
-{
-	bool success = true;
-
-	if (!expectExpression(*_if.condition))
-		success = false;
-	m_stackHeight--;
-
-	if (!(*this)(_if.body))
-		success = false;
-
-	m_info.stackHeightInfo[&_if] = m_stackHeight;
-
-	return success;
-}
-
-bool AsmAnalyzer::operator()(Switch const& _switch)
-{
-	solAssert(_switch.expression, "");
-
-	bool success = true;
-
-	if (!expectExpression(*_switch.expression))
-		success = false;
-
-	set<tuple<LiteralKind, YulString>> cases;
-	for (auto const& _case: _switch.cases)
-	{
-		if (_case.value)
-		{
-			int const initialStackHeight = m_stackHeight;
-			// We cannot use "expectExpression" here because *_case.value is not a
-			// Statement and would be converted to a Statement otherwise.
-			if (!(*this)(*_case.value))
-				success = false;
-			expectDeposit(1, initialStackHeight, _case.value->location);
-			m_stackHeight--;
-
-			/// Note: the parser ensures there is only one default case
-			auto val = make_tuple(_case.value->kind, _case.value->value);
-			if (!cases.insert(val).second)
-			{
-				m_errorReporter.declarationError(
-					_case.location,
-					"Duplicate case defined"
-				);
-				success = false;
-			}
-		}
-
-		if (!(*this)(_case.body))
-			success = false;
-	}
-
-	m_stackHeight--;
-	m_info.stackHeightInfo[&_switch] = m_stackHeight;
-
-	return success;
-}
-
-bool AsmAnalyzer::operator()(assembly::ForLoop const& _for)
-{
-	solAssert(_for.condition, "");
-
-	Scope* originalScope = m_currentScope;
-
-	bool success = true;
-	if (!(*this)(_for.pre))
-		success = false;
-	// The block was closed already, but we re-open it again and stuff the
-	// condition, the body and the post part inside.
-	m_stackHeight += scope(&_for.pre).numberOfVariables();
-	m_currentScope = &scope(&_for.pre);
-
-	if (!expectExpression(*_for.condition))
-		success = false;
-	m_stackHeight--;
-	if (!(*this)(_for.body))
-		success = false;
-	if (!(*this)(_for.post))
-		success = false;
-
-	m_stackHeight -= scope(&_for.pre).numberOfVariables();
-	m_info.stackHeightInfo[&_for] = m_stackHeight;
-	m_currentScope = originalScope;
-
-	return success;
-}
-
-bool AsmAnalyzer::operator()(Block const& _block)
-{
-	bool success = true;
-	auto previousScope = m_currentScope;
-	m_currentScope = &scope(&_block);
-
-	int const initialStackHeight = m_stackHeight;
-
-	for (auto const& s: _block.statements)
-		if (!boost::apply_visitor(*this, s))
-			success = false;
-
-	m_stackHeight -= scope(&_block).numberOfVariables();
-
-	int const stackDiff = m_stackHeight - initialStackHeight;
-	if (stackDiff != 0)
-	{
-		m_errorReporter.declarationError(
-			_block.location,
-			"Unbalanced stack at the end of a block: " +
-			(
-				stackDiff > 0 ?
-				to_string(stackDiff) + string(" surplus item(s).") :
-				to_string(-stackDiff) + string(" missing item(s).")
-			)
-		);
-		success = false;
-	}
-
-	m_info.stackHeightInfo[&_block] = m_stackHeight;
-	m_currentScope = previousScope;
-	return success;
-}
-
-bool AsmAnalyzer::expectExpression(Expression const& _expr)
-{
-	bool success = true;
-	int const initialHeight = m_stackHeight;
-	if (!boost::apply_visitor(*this, _expr))
-		success = false;
-	if (!expectDeposit(1, initialHeight, locationOf(_expr)))
-		success = false;
-	return success;
-}
-
-bool AsmAnalyzer::expectDeposit(int _deposit, int _oldHeight, SourceLocation const& _location)
-{
-	if (m_stackHeight - _oldHeight != _deposit)
-	{
-		m_errorReporter.typeError(
-			_location,
-			"Expected expression to return one item to the stack, but did return " +
-			to_string(m_stackHeight - _oldHeight) +
-			" items."
-		);
-		return false;
-	}
-	return true;
-}
-
-bool AsmAnalyzer::checkAssignment(assembly::Identifier const& _variable, size_t _valueSize)
-{
-	solAssert(!_variable.name.empty(), "");
-	bool success = true;
-	size_t numErrorsBefore = m_errorReporter.errors().size();
-	size_t variableSize(-1);
-	if (Scope::Identifier const* var = m_currentScope->lookup(_variable.name))
-	{
-		// Check that it is a variable
-		if (var->type() != typeid(Scope::Variable))
-		{
-			m_errorReporter.typeError(_variable.location, "Assignment requires variable.");
-			success = false;
-		}
-		else if (!m_activeVariables.count(&boost::get<Scope::Variable>(*var)))
-		{
-			m_errorReporter.declarationError(
-				_variable.location,
-				"Variable " + _variable.name.str() + " used before it was declared."
-			);
-			success = false;
-		}
-		variableSize = 1;
-	}
-	else if (m_resolver)
-	{
-		bool insideFunction = m_currentScope->insideFunction();
-		variableSize = m_resolver(_variable, yul::IdentifierContext::LValue, insideFunction);
-	}
-	if (variableSize == size_t(-1))
-	{
-		// Only add message if the callback did not.
-		if (numErrorsBefore == m_errorReporter.errors().size())
-			m_errorReporter.declarationError(_variable.location, "Variable not found or variable not lvalue.");
-		success = false;
-	}
-	if (_valueSize == size_t(-1))
-		_valueSize = variableSize == size_t(-1) ? 1 : variableSize;
-
-	m_stackHeight -= _valueSize;
-
-	if (_valueSize != variableSize && variableSize != size_t(-1))
-	{
-		m_errorReporter.typeError(
-			_variable.location,
-			"Variable size (" +
-			to_string(variableSize) +
-			") and value size (" +
-			to_string(_valueSize) +
-			") do not match."
-		);
-		success = false;
-	}
-	return success;
-}
-
-Scope& AsmAnalyzer::scope(Block const* _block)
-{
-	solAssert(m_info.scopes.count(_block) == 1, "Scope requested but not present.");
-	auto scopePtr = m_info.scopes.at(_block);
-	solAssert(scopePtr, "Scope requested but not present.");
-	return *scopePtr;
-}
-void AsmAnalyzer::expectValidType(string const& type, SourceLocation const& _location)
-{
-	if (m_flavour != AsmFlavour::Yul)
-		return;
-
-	if (!builtinTypes.count(type))
-		m_errorReporter.typeError(
-			_location,
-			"\"" + type + "\" is not a valid type (user defined types are not yet supported)."
-		);
-}
-
-void AsmAnalyzer::warnOnInstructions(solidity::Instruction _instr, SourceLocation const& _location)
-{
-	// We assume that returndatacopy, returndatasize and staticcall are either all available
-	// or all not available.
-	solAssert(m_evmVersion.supportsReturndata() == m_evmVersion.hasStaticCall(), "");
-	// Similarly we assume bitwise shifting and create2 go together.
-	solAssert(m_evmVersion.hasBitwiseShifting() == m_evmVersion.hasCreate2(), "");
-
-	if (_instr == solidity::Instruction::EXTCODEHASH)
-		m_errorReporter.warning(
-			_location,
-			"The \"" +
-			boost::to_lower_copy(instructionInfo(_instr).name)
-			+ "\" instruction is not supported by the VM version \"" +
-			"" + m_evmVersion.name() +
-			"\" you are currently compiling for. " +
-			"It will be interpreted as an invalid instruction on this VM."
-		);
-	else if ((
-		_instr == solidity::Instruction::RETURNDATACOPY ||
-		_instr == solidity::Instruction::RETURNDATASIZE ||
-		_instr == solidity::Instruction::STATICCALL
-	) && !m_evmVersion.supportsReturndata())
-		m_errorReporter.warning(
-			_location,
-			"The \"" +
-			boost::to_lower_copy(instructionInfo(_instr).name)
-			+ "\" instruction is only available for Byzantium-compatible VMs. " +
-			"You are currently compiling for \"" +
-			m_evmVersion.name() +
-			"\", where it will be interpreted as an invalid instruction."
-		);
-	else if ((
-		_instr == solidity::Instruction::SHL ||
-		_instr == solidity::Instruction::SHR ||
-		_instr == solidity::Instruction::SAR ||
-		_instr == solidity::Instruction::CREATE2
-	) && !m_evmVersion.hasBitwiseShifting())
-		m_errorReporter.warning(
-			_location,
-			"The \"" +
-			boost::to_lower_copy(instructionInfo(_instr).name)
-			+ "\" instruction is only available for Constantinople-compatible VMs. " +
-			"You are currently compiling for \"" +
-			m_evmVersion.name() +
-			"\", where it will be interpreted as an invalid instruction."
-		);
-
-	if (_instr == solidity::Instruction::JUMP || _instr == solidity::Instruction::JUMPI || _instr == solidity::Instruction::JUMPDEST)
-	{
-		solAssert(m_flavour == AsmFlavour::Loose, "");
-		m_errorReporter.error(
-			m_errorTypeForLoose ? *m_errorTypeForLoose : Error::Type::Warning,
-			_location,
-			"Jump instructions and labels are low-level EVM features that can lead to "
-			"incorrect stack access. Because of that they are discouraged. "
-			"Please consider using \"switch\", \"if\" or \"for\" statements instead."
-		);
-	}
-}
-
-void AsmAnalyzer::checkLooseFeature(SourceLocation const& _location, string const& _description)
-{
-	if (m_flavour != AsmFlavour::Loose)
-		solAssert(false, _description);
-	else if (m_errorTypeForLoose)
-		m_errorReporter.error(*m_errorTypeForLoose, _location, _description);
-}
diff --git a/libsolidity/inlineasm/AsmAnalysis.h b/libsolidity/inlineasm/AsmAnalysis.h
deleted file mode 100644
index 194f736e..00000000
--- a/libsolidity/inlineasm/AsmAnalysis.h
+++ /dev/null
@@ -1,128 +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/>.
-*/
-/**
- * Analysis part of inline assembly.
- */
-
-#pragma once
-
-#include <liblangutil/Exceptions.h>
-#include <liblangutil/EVMVersion.h>
-
-#include <libsolidity/inlineasm/AsmScope.h>
-
-#include <libyul/backends/evm/AbstractAssembly.h>
-
-#include <libsolidity/inlineasm/AsmDataForward.h>
-
-#include <boost/variant.hpp>
-#include <boost/optional.hpp>
-
-#include <functional>
-#include <memory>
-
-namespace langutil
-{
-class ErrorReporter;
-struct SourceLocation;
-}
-
-namespace dev
-{
-namespace solidity
-{
-namespace assembly
-{
-
-struct AsmAnalysisInfo;
-
-/**
- * Performs the full analysis stage, calls the ScopeFiller internally, then resolves
- * references and performs other checks.
- * If all these checks pass, code generation should not throw errors.
- */
-class AsmAnalyzer: public boost::static_visitor<bool>
-{
-public:
-	explicit AsmAnalyzer(
-		AsmAnalysisInfo& _analysisInfo,
-		langutil::ErrorReporter& _errorReporter,
-		EVMVersion _evmVersion,
-		boost::optional<langutil::Error::Type> _errorTypeForLoose,
-		AsmFlavour _flavour = AsmFlavour::Loose,
-		yul::ExternalIdentifierAccess::Resolver const& _resolver = yul::ExternalIdentifierAccess::Resolver()
-	):
-		m_resolver(_resolver),
-		m_info(_analysisInfo),
-		m_errorReporter(_errorReporter),
-		m_evmVersion(_evmVersion),
-		m_flavour(_flavour),
-		m_errorTypeForLoose(_errorTypeForLoose)
-	{}
-
-	bool analyze(assembly::Block const& _block);
-
-	bool operator()(assembly::Instruction const&);
-	bool operator()(assembly::Literal const& _literal);
-	bool operator()(assembly::Identifier const&);
-	bool operator()(assembly::FunctionalInstruction const& _functionalInstruction);
-	bool operator()(assembly::Label const& _label);
-	bool operator()(assembly::ExpressionStatement const&);
-	bool operator()(assembly::StackAssignment const&);
-	bool operator()(assembly::Assignment const& _assignment);
-	bool operator()(assembly::VariableDeclaration const& _variableDeclaration);
-	bool operator()(assembly::FunctionDefinition const& _functionDefinition);
-	bool operator()(assembly::FunctionCall const& _functionCall);
-	bool operator()(assembly::If const& _if);
-	bool operator()(assembly::Switch const& _switch);
-	bool operator()(assembly::ForLoop const& _forLoop);
-	bool operator()(assembly::Block const& _block);
-
-private:
-	/// Visits the statement and expects it to deposit one item onto the stack.
-	bool expectExpression(Expression const& _expr);
-	bool expectDeposit(int _deposit, int _oldHeight, langutil::SourceLocation const& _location);
-
-	/// Verifies that a variable to be assigned to exists and has the same size
-	/// as the value, @a _valueSize, unless that is equal to -1.
-	bool checkAssignment(assembly::Identifier const& _assignment, size_t _valueSize = size_t(-1));
-
-	Scope& scope(assembly::Block const* _block);
-	void expectValidType(std::string const& type, langutil::SourceLocation const& _location);
-	void warnOnInstructions(solidity::Instruction _instr, langutil::SourceLocation const& _location);
-
-	/// Depending on @a m_flavour and @a m_errorTypeForLoose, throws an internal compiler
-	/// exception (if the flavour is not Loose), reports an error/warning
-	/// (if m_errorTypeForLoose is set) or does nothing.
-	void checkLooseFeature(langutil::SourceLocation const& _location, std::string const& _description);
-
-	int m_stackHeight = 0;
-	yul::ExternalIdentifierAccess::Resolver m_resolver;
-	Scope* m_currentScope = nullptr;
-	/// Variables that are active at the current point in assembly (as opposed to
-	/// "part of the scope but not yet declared")
-	std::set<Scope::Variable const*> m_activeVariables;
-	AsmAnalysisInfo& m_info;
-	langutil::ErrorReporter& m_errorReporter;
-	EVMVersion m_evmVersion;
-	AsmFlavour m_flavour = AsmFlavour::Loose;
-	boost::optional<langutil::Error::Type> m_errorTypeForLoose;
-};
-
-}
-}
-}
diff --git a/libsolidity/inlineasm/AsmAnalysisInfo.cpp b/libsolidity/inlineasm/AsmAnalysisInfo.cpp
deleted file mode 100644
index 22318b12..00000000
--- a/libsolidity/inlineasm/AsmAnalysisInfo.cpp
+++ /dev/null
@@ -1,26 +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/>.
-*/
-/**
- * Information generated during analyzer part of inline assembly.
- */
-
-#include <libsolidity/inlineasm/AsmAnalysisInfo.h>
-
-#include <libsolidity/inlineasm/AsmScope.h>
-
-#include <ostream>
-
diff --git a/libsolidity/inlineasm/AsmAnalysisInfo.h b/libsolidity/inlineasm/AsmAnalysisInfo.h
deleted file mode 100644
index bd3b28c4..00000000
--- a/libsolidity/inlineasm/AsmAnalysisInfo.h
+++ /dev/null
@@ -1,52 +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/>.
-*/
-/**
- * Information generated during analyzer part of inline assembly.
- */
-
-#pragma once
-
-#include <libsolidity/inlineasm/AsmDataForward.h>
-
-#include <boost/variant.hpp>
-
-#include <map>
-#include <memory>
-#include <vector>
-
-namespace dev
-{
-namespace solidity
-{
-namespace assembly
-{
-
-struct Scope;
-
-struct AsmAnalysisInfo
-{
-	using StackHeightInfo = std::map<void const*, int>;
-	using Scopes = std::map<assembly::Block const*, std::shared_ptr<Scope>>;
-	Scopes scopes;
-	StackHeightInfo stackHeightInfo;
-	/// Virtual blocks which will be used for scopes for function arguments and return values.
-	std::map<FunctionDefinition const*, std::shared_ptr<assembly::Block const>> virtualBlocks;
-};
-
-}
-}
-}
diff --git a/libsolidity/inlineasm/AsmCodeGen.cpp b/libsolidity/inlineasm/AsmCodeGen.cpp
deleted file mode 100644
index 2800cc7b..00000000
--- a/libsolidity/inlineasm/AsmCodeGen.cpp
+++ /dev/null
@@ -1,162 +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/>.
-*/
-/**
- * @author Christian <c@ethdev.com>
- * @date 2016
- * Code-generating part of inline assembly.
- */
-
-#include <libsolidity/inlineasm/AsmCodeGen.h>
-
-#include <libsolidity/inlineasm/AsmParser.h>
-#include <libsolidity/inlineasm/AsmData.h>
-#include <libsolidity/inlineasm/AsmScope.h>
-#include <libsolidity/inlineasm/AsmAnalysis.h>
-#include <libsolidity/inlineasm/AsmAnalysisInfo.h>
-
-#include <libevmasm/Assembly.h>
-#include <liblangutil/SourceLocation.h>
-#include <libevmasm/Instruction.h>
-
-#include <libyul/backends/evm/AbstractAssembly.h>
-#include <libyul/backends/evm/EVMCodeTransform.h>
-
-#include <libdevcore/CommonIO.h>
-
-#include <boost/range/adaptor/reversed.hpp>
-#include <boost/range/adaptor/map.hpp>
-#include <boost/range/algorithm/count_if.hpp>
-
-#include <memory>
-#include <functional>
-
-using namespace std;
-using namespace dev;
-using namespace langutil;
-using namespace dev::solidity;
-using namespace dev::solidity::assembly;
-
-class EthAssemblyAdapter: public yul::AbstractAssembly
-{
-public:
-	explicit EthAssemblyAdapter(eth::Assembly& _assembly):
-		m_assembly(_assembly)
-	{
-	}
-	virtual void setSourceLocation(SourceLocation const& _location) override
-	{
-		m_assembly.setSourceLocation(_location);
-	}
-	virtual int stackHeight() const override { return m_assembly.deposit(); }
-	virtual void appendInstruction(solidity::Instruction _instruction) override
-	{
-		m_assembly.append(_instruction);
-	}
-	virtual void appendConstant(u256 const& _constant) override
-	{
-		m_assembly.append(_constant);
-	}
-	/// Append a label.
-	virtual void appendLabel(LabelID _labelId) override
-	{
-		m_assembly.append(eth::AssemblyItem(eth::Tag, _labelId));
-	}
-	/// Append a label reference.
-	virtual void appendLabelReference(LabelID _labelId) override
-	{
-		m_assembly.append(eth::AssemblyItem(eth::PushTag, _labelId));
-	}
-	virtual size_t newLabelId() override
-	{
-		return assemblyTagToIdentifier(m_assembly.newTag());
-	}
-	virtual size_t namedLabel(std::string const& _name) override
-	{
-		return assemblyTagToIdentifier(m_assembly.namedTag(_name));
-	}
-	virtual void appendLinkerSymbol(std::string const& _linkerSymbol) override
-	{
-		m_assembly.appendLibraryAddress(_linkerSymbol);
-	}
-	virtual void appendJump(int _stackDiffAfter) override
-	{
-		appendInstruction(solidity::Instruction::JUMP);
-		m_assembly.adjustDeposit(_stackDiffAfter);
-	}
-	virtual void appendJumpTo(LabelID _labelId, int _stackDiffAfter) override
-	{
-		appendLabelReference(_labelId);
-		appendJump(_stackDiffAfter);
-	}
-	virtual void appendJumpToIf(LabelID _labelId) override
-	{
-		appendLabelReference(_labelId);
-		appendInstruction(solidity::Instruction::JUMPI);
-	}
-	virtual void appendBeginsub(LabelID, int) override
-	{
-		// TODO we could emulate that, though
-		solAssert(false, "BEGINSUB not implemented for EVM 1.0");
-	}
-	/// Call a subroutine.
-	virtual void appendJumpsub(LabelID, int, int) override
-	{
-		// TODO we could emulate that, though
-		solAssert(false, "JUMPSUB not implemented for EVM 1.0");
-	}
-
-	/// Return from a subroutine.
-	virtual void appendReturnsub(int, int) override
-	{
-		// TODO we could emulate that, though
-		solAssert(false, "RETURNSUB not implemented for EVM 1.0");
-	}
-
-	virtual void appendAssemblySize() override
-	{
-		m_assembly.appendProgramSize();
-	}
-
-private:
-	static LabelID assemblyTagToIdentifier(eth::AssemblyItem const& _tag)
-	{
-		u256 id = _tag.data();
-		solAssert(id <= std::numeric_limits<LabelID>::max(), "Tag id too large.");
-		return LabelID(id);
-	}
-
-	eth::Assembly& m_assembly;
-};
-
-void assembly::CodeGenerator::assemble(
-	Block const& _parsedData,
-	AsmAnalysisInfo& _analysisInfo,
-	eth::Assembly& _assembly,
-	yul::ExternalIdentifierAccess const& _identifierAccess,
-	bool _useNamedLabelsForFunctions
-)
-{
-	EthAssemblyAdapter assemblyAdapter(_assembly);
-	yul::CodeTransform(
-		assemblyAdapter,
-		_analysisInfo,
-		false,
-		false,
-		_identifierAccess,
-		_useNamedLabelsForFunctions
-	)(_parsedData);
-}
diff --git a/libsolidity/inlineasm/AsmCodeGen.h b/libsolidity/inlineasm/AsmCodeGen.h
deleted file mode 100644
index bbc31397..00000000
--- a/libsolidity/inlineasm/AsmCodeGen.h
+++ /dev/null
@@ -1,56 +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/>.
-*/
-/**
- * @author Christian <c@ethdev.com>
- * @date 2016
- * Code-generating part of inline assembly.
- */
-
-#pragma once
-
-#include <libsolidity/inlineasm/AsmAnalysis.h>
-
-#include <functional>
-
-namespace dev
-{
-namespace eth
-{
-class Assembly;
-}
-namespace solidity
-{
-namespace assembly
-{
-struct Block;
-
-class CodeGenerator
-{
-public:
-	/// Performs code generation and appends generated to _assembly.
-	static void assemble(
-		Block const& _parsedData,
-		AsmAnalysisInfo& _analysisInfo,
-		eth::Assembly& _assembly,
-		yul::ExternalIdentifierAccess const& _identifierAccess = yul::ExternalIdentifierAccess(),
-		bool _useNamedLabelsForFunctions = false
-	);
-};
-
-}
-}
-}
diff --git a/libsolidity/inlineasm/AsmData.h b/libsolidity/inlineasm/AsmData.h
deleted file mode 100644
index 23a9db75..00000000
--- a/libsolidity/inlineasm/AsmData.h
+++ /dev/null
@@ -1,104 +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/>.
-*/
-/**
- * @author Christian <c@ethdev.com>
- * @date 2016
- * Parsed inline assembly to be used by the AST
- */
-
-#pragma once
-
-#include <libsolidity/inlineasm/AsmDataForward.h>
-
-#include <libevmasm/Instruction.h>
-#include <liblangutil/SourceLocation.h>
-
-#include <libyul/YulString.h>
-
-#include <boost/variant.hpp>
-#include <boost/noncopyable.hpp>
-
-#include <map>
-#include <memory>
-
-namespace dev
-{
-namespace solidity
-{
-namespace assembly
-{
-
-using YulString = dev::yul::YulString;
-using Type = YulString;
-
-struct TypedName { langutil::SourceLocation location; YulString name; Type type; };
-using TypedNameList = std::vector<TypedName>;
-
-/// Direct EVM instruction (except PUSHi and JUMPDEST)
-struct Instruction { langutil::SourceLocation location; solidity::Instruction instruction; };
-/// Literal number or string (up to 32 bytes)
-enum class LiteralKind { Number, Boolean, String };
-struct Literal { langutil::SourceLocation location; LiteralKind kind; YulString value; Type type; };
-/// External / internal identifier or label reference
-struct Identifier { langutil::SourceLocation location; YulString name; };
-/// Jump label ("name:")
-struct Label { langutil::SourceLocation location; YulString name; };
-/// Assignment from stack (":= x", moves stack top into x, potentially multiple slots)
-struct StackAssignment { langutil::SourceLocation location; Identifier variableName; };
-/// Assignment ("x := mload(20:u256)", expects push-1-expression on the right hand
-/// side and requires x to occupy exactly one stack slot.
-///
-/// Multiple assignment ("x, y := f()"), where the left hand side variables each occupy
-/// a single stack slot and expects a single expression on the right hand returning
-/// the same amount of items as the number of variables.
-struct Assignment { langutil::SourceLocation location; std::vector<Identifier> variableNames; std::shared_ptr<Expression> value; };
-/// Functional instruction, e.g. "mul(mload(20:u256), add(2:u256, x))"
-struct FunctionalInstruction { langutil::SourceLocation location; solidity::Instruction instruction; std::vector<Expression> arguments; };
-struct FunctionCall { langutil::SourceLocation location; Identifier functionName; std::vector<Expression> arguments; };
-/// Statement that contains only a single expression
-struct ExpressionStatement { langutil::SourceLocation location; Expression expression; };
-/// Block-scope variable declaration ("let x:u256 := mload(20:u256)"), non-hoisted
-struct VariableDeclaration { langutil::SourceLocation location; TypedNameList variables; std::shared_ptr<Expression> value; };
-/// Block that creates a scope (frees declared stack variables)
-struct Block { langutil::SourceLocation location; std::vector<Statement> statements; };
-/// Function definition ("function f(a, b) -> (d, e) { ... }")
-struct FunctionDefinition { langutil::SourceLocation location; YulString name; TypedNameList parameters; TypedNameList returnVariables; Block body; };
-/// Conditional execution without "else" part.
-struct If { langutil::SourceLocation location; std::shared_ptr<Expression> condition; Block body; };
-/// Switch case or default case
-struct Case { langutil::SourceLocation location; std::shared_ptr<Literal> value; Block body; };
-/// Switch statement
-struct Switch { langutil::SourceLocation location; std::shared_ptr<Expression> expression; std::vector<Case> cases; };
-struct ForLoop { langutil::SourceLocation location; Block pre; std::shared_ptr<Expression> condition; Block post; Block body; };
-
-struct LocationExtractor: boost::static_visitor<langutil::SourceLocation>
-{
-	template <class T> langutil::SourceLocation operator()(T const& _node) const
-	{
-		return _node.location;
-	}
-};
-
-/// Extracts the source location from an inline assembly node.
-template <class T> inline langutil::SourceLocation locationOf(T const& _node)
-{
-	return boost::apply_visitor(LocationExtractor(), _node);
-}
-
-}
-}
-}
diff --git a/libsolidity/inlineasm/AsmDataForward.h b/libsolidity/inlineasm/AsmDataForward.h
deleted file mode 100644
index 69cf8f1d..00000000
--- a/libsolidity/inlineasm/AsmDataForward.h
+++ /dev/null
@@ -1,65 +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/>.
-*/
-/**
- * @author Christian <c@ethdev.com>
- * @date 2016
- * Forward declaration of classes for inline assembly / Yul AST
- */
-
-#pragma once
-
-#include <boost/variant.hpp>
-
-namespace dev
-{
-namespace solidity
-{
-namespace assembly
-{
-
-struct Instruction;
-struct Literal;
-struct Label;
-struct StackAssignment;
-struct Identifier;
-struct Assignment;
-struct VariableDeclaration;
-struct FunctionalInstruction;
-struct FunctionDefinition;
-struct FunctionCall;
-struct If;
-struct Switch;
-struct Case;
-struct ForLoop;
-struct ExpressionStatement;
-struct Block;
-
-struct TypedName;
-
-using Expression = boost::variant<FunctionalInstruction, FunctionCall, Identifier, Literal>;
-using Statement = boost::variant<ExpressionStatement, Instruction, Label, StackAssignment, Assignment, VariableDeclaration, FunctionDefinition, If, Switch, ForLoop, Block>;
-
-enum class AsmFlavour
-{
-	Loose,  // no types, EVM instructions as function, jumps and direct stack manipulations
-	Strict, // no types, EVM instructions as functions, but no jumps and no direct stack manipulations
-	Yul     // same as Strict mode with types
-};
-
-}
-}
-}
diff --git a/libsolidity/inlineasm/AsmParser.cpp b/libsolidity/inlineasm/AsmParser.cpp
deleted file mode 100644
index b11f70e0..00000000
--- a/libsolidity/inlineasm/AsmParser.cpp
+++ /dev/null
@@ -1,617 +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/>.
-*/
-/**
- * @author Christian <c@ethdev.com>
- * @date 2016
- * Solidity inline assembly parser.
- */
-
-#include <libsolidity/inlineasm/AsmParser.h>
-#include <liblangutil/Scanner.h>
-#include <liblangutil/ErrorReporter.h>
-
-#include <boost/algorithm/string.hpp>
-
-#include <cctype>
-#include <algorithm>
-
-using namespace std;
-using namespace dev;
-using namespace langutil;
-using namespace dev::solidity;
-using namespace dev::solidity::assembly;
-
-shared_ptr<assembly::Block> Parser::parse(std::shared_ptr<Scanner> const& _scanner, bool _reuseScanner)
-{
-	m_recursionDepth = 0;
-	try
-	{
-		m_scanner = _scanner;
-		auto block = make_shared<Block>(parseBlock());
-		if (!_reuseScanner)
-			expectToken(Token::EOS);
-		return block;
-	}
-	catch (FatalError const&)
-	{
-		if (m_errorReporter.errors().empty())
-			throw; // Something is weird here, rather throw again.
-	}
-	return nullptr;
-}
-
-assembly::Block Parser::parseBlock()
-{
-	RecursionGuard recursionGuard(*this);
-	assembly::Block block = createWithLocation<Block>();
-	expectToken(Token::LBrace);
-	while (currentToken() != Token::RBrace)
-		block.statements.emplace_back(parseStatement());
-	block.location.end = endPosition();
-	advance();
-	return block;
-}
-
-assembly::Statement Parser::parseStatement()
-{
-	RecursionGuard recursionGuard(*this);
-	switch (currentToken())
-	{
-	case Token::Let:
-		return parseVariableDeclaration();
-	case Token::Function:
-		return parseFunctionDefinition();
-	case Token::LBrace:
-		return parseBlock();
-	case Token::If:
-	{
-		assembly::If _if = createWithLocation<assembly::If>();
-		m_scanner->next();
-		_if.condition = make_shared<Expression>(parseExpression());
-		_if.body = parseBlock();
-		return _if;
-	}
-	case Token::Switch:
-	{
-		assembly::Switch _switch = createWithLocation<assembly::Switch>();
-		m_scanner->next();
-		_switch.expression = make_shared<Expression>(parseExpression());
-		while (m_scanner->currentToken() == Token::Case)
-			_switch.cases.emplace_back(parseCase());
-		if (m_scanner->currentToken() == Token::Default)
-			_switch.cases.emplace_back(parseCase());
-		if (m_scanner->currentToken() == Token::Default)
-			fatalParserError("Only one default case allowed.");
-		else if (m_scanner->currentToken() == Token::Case)
-			fatalParserError("Case not allowed after default case.");
-		if (_switch.cases.empty())
-			fatalParserError("Switch statement without any cases.");
-		_switch.location.end = _switch.cases.back().body.location.end;
-		return _switch;
-	}
-	case Token::For:
-		return parseForLoop();
-	case Token::Assign:
-	{
-		if (m_flavour != AsmFlavour::Loose)
-			break;
-		assembly::StackAssignment assignment = createWithLocation<assembly::StackAssignment>();
-		advance();
-		expectToken(Token::Colon);
-		assignment.variableName.location = location();
-		assignment.variableName.name = YulString(currentLiteral());
-		if (instructions().count(assignment.variableName.name.str()))
-			fatalParserError("Identifier expected, got instruction name.");
-		assignment.location.end = endPosition();
-		expectToken(Token::Identifier);
-		return assignment;
-	}
-	default:
-		break;
-	}
-	// Options left:
-	// Simple instruction (might turn into functional),
-	// literal,
-	// identifier (might turn into label or functional assignment)
-	ElementaryOperation elementary(parseElementaryOperation());
-	switch (currentToken())
-	{
-	case Token::LParen:
-	{
-		Expression expr = parseCall(std::move(elementary));
-		return ExpressionStatement{locationOf(expr), expr};
-	}
-	case Token::Comma:
-	{
-		// if a comma follows, a multiple assignment is assumed
-
-		if (elementary.type() != typeid(assembly::Identifier))
-			fatalParserError("Label name / variable name must precede \",\" (multiple assignment).");
-		assembly::Identifier const& identifier = boost::get<assembly::Identifier>(elementary);
-
-		Assignment assignment = createWithLocation<Assignment>(identifier.location);
-		assignment.variableNames.emplace_back(identifier);
-
-		do
-		{
-			expectToken(Token::Comma);
-			elementary = parseElementaryOperation();
-			if (elementary.type() != typeid(assembly::Identifier))
-				fatalParserError("Variable name expected in multiple assignment.");
-			assignment.variableNames.emplace_back(boost::get<assembly::Identifier>(elementary));
-		}
-		while (currentToken() == Token::Comma);
-
-		expectToken(Token::Colon);
-		expectToken(Token::Assign);
-
-		assignment.value.reset(new Expression(parseExpression()));
-		assignment.location.end = locationOf(*assignment.value).end;
-		return assignment;
-	}
-	case Token::Colon:
-	{
-		if (elementary.type() != typeid(assembly::Identifier))
-			fatalParserError("Label name / variable name must precede \":\".");
-		assembly::Identifier const& identifier = boost::get<assembly::Identifier>(elementary);
-		advance();
-		// identifier:=: should be parsed as identifier: =: (i.e. a label),
-		// while identifier:= (being followed by a non-colon) as identifier := (assignment).
-		if (currentToken() == Token::Assign && peekNextToken() != Token::Colon)
-		{
-			assembly::Assignment assignment = createWithLocation<assembly::Assignment>(identifier.location);
-			if (m_flavour != AsmFlavour::Yul && instructions().count(identifier.name.str()))
-				fatalParserError("Cannot use instruction names for identifier names.");
-			advance();
-			assignment.variableNames.emplace_back(identifier);
-			assignment.value.reset(new Expression(parseExpression()));
-			assignment.location.end = locationOf(*assignment.value).end;
-			return assignment;
-		}
-		else
-		{
-			// label
-			if (m_flavour != AsmFlavour::Loose)
-				fatalParserError("Labels are not supported.");
-			Label label = createWithLocation<Label>(identifier.location);
-			label.name = identifier.name;
-			return label;
-		}
-	}
-	default:
-		if (m_flavour != AsmFlavour::Loose)
-			fatalParserError("Call or assignment expected.");
-		break;
-	}
-	if (elementary.type() == typeid(assembly::Identifier))
-	{
-		Expression expr = boost::get<assembly::Identifier>(elementary);
-		return ExpressionStatement{locationOf(expr), expr};
-	}
-	else if (elementary.type() == typeid(assembly::Literal))
-	{
-		Expression expr = boost::get<assembly::Literal>(elementary);
-		return ExpressionStatement{locationOf(expr), expr};
-	}
-	else
-	{
-		solAssert(elementary.type() == typeid(assembly::Instruction), "Invalid elementary operation.");
-		return boost::get<assembly::Instruction>(elementary);
-	}
-}
-
-assembly::Case Parser::parseCase()
-{
-	RecursionGuard recursionGuard(*this);
-	assembly::Case _case = createWithLocation<assembly::Case>();
-	if (m_scanner->currentToken() == Token::Default)
-		m_scanner->next();
-	else if (m_scanner->currentToken() == Token::Case)
-	{
-		m_scanner->next();
-		ElementaryOperation literal = parseElementaryOperation();
-		if (literal.type() != typeid(assembly::Literal))
-			fatalParserError("Literal expected.");
-		_case.value = make_shared<Literal>(boost::get<assembly::Literal>(std::move(literal)));
-	}
-	else
-		fatalParserError("Case or default case expected.");
-	_case.body = parseBlock();
-	_case.location.end = _case.body.location.end;
-	return _case;
-}
-
-assembly::ForLoop Parser::parseForLoop()
-{
-	RecursionGuard recursionGuard(*this);
-	ForLoop forLoop = createWithLocation<ForLoop>();
-	expectToken(Token::For);
-	forLoop.pre = parseBlock();
-	forLoop.condition = make_shared<Expression>(parseExpression());
-	forLoop.post = parseBlock();
-	forLoop.body = parseBlock();
-	forLoop.location.end = forLoop.body.location.end;
-	return forLoop;
-}
-
-assembly::Expression Parser::parseExpression()
-{
-	RecursionGuard recursionGuard(*this);
-	// In strict mode, this might parse a plain Instruction, but
-	// it will be converted to a FunctionalInstruction inside
-	// parseCall below.
-	ElementaryOperation operation = parseElementaryOperation();
-	if (operation.type() == typeid(Instruction))
-	{
-		Instruction const& instr = boost::get<Instruction>(operation);
-		// Disallow instructions returning multiple values (and DUP/SWAP) as expression.
-		if (
-			instructionInfo(instr.instruction).ret != 1 ||
-			isDupInstruction(instr.instruction) ||
-			isSwapInstruction(instr.instruction)
-		)
-			fatalParserError(
-				"Instruction \"" +
-				instructionNames().at(instr.instruction) +
-				"\" not allowed in this context."
-			);
-		if (m_flavour != AsmFlavour::Loose && currentToken() != Token::LParen)
-			fatalParserError(
-				"Non-functional instructions are not allowed in this context."
-			);
-		// Enforce functional notation for instructions requiring multiple arguments.
-		int args = instructionInfo(instr.instruction).args;
-		if (args > 0 && currentToken() != Token::LParen)
-			fatalParserError(string(
-				"Expected '(' (instruction \"" +
-				instructionNames().at(instr.instruction) +
-				"\" expects " +
-				to_string(args) +
-				" arguments)"
-			));
-	}
-	if (currentToken() == Token::LParen)
-		return parseCall(std::move(operation));
-	else if (operation.type() == typeid(Instruction))
-	{
-		// Instructions not taking arguments are allowed as expressions.
-		solAssert(m_flavour == AsmFlavour::Loose, "");
-		Instruction& instr = boost::get<Instruction>(operation);
-		return FunctionalInstruction{std::move(instr.location), instr.instruction, {}};
-	}
-	else if (operation.type() == typeid(assembly::Identifier))
-		return boost::get<assembly::Identifier>(operation);
-	else
-	{
-		solAssert(operation.type() == typeid(assembly::Literal), "");
-		return boost::get<assembly::Literal>(operation);
-	}
-}
-
-std::map<string, dev::solidity::Instruction> const& Parser::instructions()
-{
-	// Allowed instructions, lowercase names.
-	static map<string, dev::solidity::Instruction> s_instructions;
-	if (s_instructions.empty())
-	{
-		for (auto const& instruction: solidity::c_instructions)
-		{
-			if (
-				instruction.second == solidity::Instruction::JUMPDEST ||
-				solidity::isPushInstruction(instruction.second)
-			)
-				continue;
-			string name = instruction.first;
-			transform(name.begin(), name.end(), name.begin(), [](unsigned char _c) { return tolower(_c); });
-			s_instructions[name] = instruction.second;
-		}
-	}
-	return s_instructions;
-}
-
-std::map<dev::solidity::Instruction, string> const& Parser::instructionNames()
-{
-	static map<dev::solidity::Instruction, string> s_instructionNames;
-	if (s_instructionNames.empty())
-	{
-		for (auto const& instr: instructions())
-			s_instructionNames[instr.second] = instr.first;
-		// set the ambiguous instructions to a clear default
-		s_instructionNames[solidity::Instruction::SELFDESTRUCT] = "selfdestruct";
-		s_instructionNames[solidity::Instruction::KECCAK256] = "keccak256";
-	}
-	return s_instructionNames;
-}
-
-Parser::ElementaryOperation Parser::parseElementaryOperation()
-{
-	RecursionGuard recursionGuard(*this);
-	ElementaryOperation ret;
-	switch (currentToken())
-	{
-	case Token::Identifier:
-	case Token::Return:
-	case Token::Byte:
-	case Token::Address:
-	{
-		string literal;
-		if (currentToken() == Token::Return)
-			literal = "return";
-		else if (currentToken() == Token::Byte)
-			literal = "byte";
-		else if (currentToken() == Token::Address)
-			literal = "address";
-		else
-			literal = currentLiteral();
-		// first search the set of instructions.
-		if (m_flavour != AsmFlavour::Yul && instructions().count(literal))
-		{
-			dev::solidity::Instruction const& instr = instructions().at(literal);
-			ret = Instruction{location(), instr};
-		}
-		else
-			ret = Identifier{location(), YulString{literal}};
-		advance();
-		break;
-	}
-	case Token::StringLiteral:
-	case Token::Number:
-	case Token::TrueLiteral:
-	case Token::FalseLiteral:
-	{
-		LiteralKind kind = LiteralKind::Number;
-		switch (currentToken())
-		{
-		case Token::StringLiteral:
-			kind = LiteralKind::String;
-			break;
-		case Token::Number:
-			if (!isValidNumberLiteral(currentLiteral()))
-				fatalParserError("Invalid number literal.");
-			kind = LiteralKind::Number;
-			break;
-		case Token::TrueLiteral:
-		case Token::FalseLiteral:
-			kind = LiteralKind::Boolean;
-			break;
-		default:
-			break;
-		}
-
-		Literal literal{
-			location(),
-			kind,
-			YulString{currentLiteral()},
-			{}
-		};
-		advance();
-		if (m_flavour == AsmFlavour::Yul)
-		{
-			expectToken(Token::Colon);
-			literal.location.end = endPosition();
-			literal.type = YulString{expectAsmIdentifier()};
-		}
-		else if (kind == LiteralKind::Boolean)
-			fatalParserError("True and false are not valid literals.");
-		ret = std::move(literal);
-		break;
-	}
-	default:
-		fatalParserError(
-			m_flavour == AsmFlavour::Yul ?
-			"Literal or identifier expected." :
-			"Literal, identifier or instruction expected."
-		);
-	}
-	return ret;
-}
-
-assembly::VariableDeclaration Parser::parseVariableDeclaration()
-{
-	RecursionGuard recursionGuard(*this);
-	VariableDeclaration varDecl = createWithLocation<VariableDeclaration>();
-	expectToken(Token::Let);
-	while (true)
-	{
-		varDecl.variables.emplace_back(parseTypedName());
-		if (currentToken() == Token::Comma)
-			expectToken(Token::Comma);
-		else
-			break;
-	}
-	if (currentToken() == Token::Colon)
-	{
-		expectToken(Token::Colon);
-		expectToken(Token::Assign);
-		varDecl.value.reset(new Expression(parseExpression()));
-		varDecl.location.end = locationOf(*varDecl.value).end;
-	}
-	else
-		varDecl.location.end = varDecl.variables.back().location.end;
-	return varDecl;
-}
-
-assembly::FunctionDefinition Parser::parseFunctionDefinition()
-{
-	RecursionGuard recursionGuard(*this);
-	FunctionDefinition funDef = createWithLocation<FunctionDefinition>();
-	expectToken(Token::Function);
-	funDef.name = YulString{expectAsmIdentifier()};
-	expectToken(Token::LParen);
-	while (currentToken() != Token::RParen)
-	{
-		funDef.parameters.emplace_back(parseTypedName());
-		if (currentToken() == Token::RParen)
-			break;
-		expectToken(Token::Comma);
-	}
-	expectToken(Token::RParen);
-	if (currentToken() == Token::Sub)
-	{
-		expectToken(Token::Sub);
-		expectToken(Token::GreaterThan);
-		while (true)
-		{
-			funDef.returnVariables.emplace_back(parseTypedName());
-			if (currentToken() == Token::LBrace)
-				break;
-			expectToken(Token::Comma);
-		}
-	}
-	funDef.body = parseBlock();
-	funDef.location.end = funDef.body.location.end;
-	return funDef;
-}
-
-assembly::Expression Parser::parseCall(Parser::ElementaryOperation&& _initialOp)
-{
-	RecursionGuard recursionGuard(*this);
-	if (_initialOp.type() == typeid(Instruction))
-	{
-		solAssert(m_flavour != AsmFlavour::Yul, "Instructions are invalid in Yul");
-		Instruction& instruction = boost::get<Instruction>(_initialOp);
-		FunctionalInstruction ret;
-		ret.instruction = instruction.instruction;
-		ret.location = std::move(instruction.location);
-		solidity::Instruction instr = ret.instruction;
-		InstructionInfo instrInfo = instructionInfo(instr);
-		if (solidity::isDupInstruction(instr))
-			fatalParserError("DUPi instructions not allowed for functional notation");
-		if (solidity::isSwapInstruction(instr))
-			fatalParserError("SWAPi instructions not allowed for functional notation");
-		expectToken(Token::LParen);
-		unsigned args = unsigned(instrInfo.args);
-		for (unsigned i = 0; i < args; ++i)
-		{
-			/// check for premature closing parentheses
-			if (currentToken() == Token::RParen)
-				fatalParserError(string(
-					"Expected expression (instruction \"" +
-					instructionNames().at(instr) +
-					"\" expects " +
-					to_string(args) +
-					" arguments)"
-				));
-
-			ret.arguments.emplace_back(parseExpression());
-			if (i != args - 1)
-			{
-				if (currentToken() != Token::Comma)
-					fatalParserError(string(
-						"Expected ',' (instruction \"" +
-						instructionNames().at(instr) +
-						"\" expects " +
-						to_string(args) +
-						" arguments)"
-					));
-				else
-					advance();
-			}
-		}
-		ret.location.end = endPosition();
-		if (currentToken() == Token::Comma)
-			fatalParserError(string(
-				"Expected ')' (instruction \"" +
-				instructionNames().at(instr) +
-				"\" expects " +
-				to_string(args) +
-				" arguments)"
-			));
-		expectToken(Token::RParen);
-		return ret;
-	}
-	else if (_initialOp.type() == typeid(Identifier))
-	{
-		FunctionCall ret;
-		ret.functionName = std::move(boost::get<Identifier>(_initialOp));
-		ret.location = ret.functionName.location;
-		expectToken(Token::LParen);
-		while (currentToken() != Token::RParen)
-		{
-			ret.arguments.emplace_back(parseExpression());
-			if (currentToken() == Token::RParen)
-				break;
-			expectToken(Token::Comma);
-		}
-		ret.location.end = endPosition();
-		expectToken(Token::RParen);
-		return ret;
-	}
-	else
-		fatalParserError(
-			m_flavour == AsmFlavour::Yul ?
-			"Function name expected." :
-			"Assembly instruction or function name required in front of \"(\")"
-		);
-
-	return {};
-}
-
-TypedName Parser::parseTypedName()
-{
-	RecursionGuard recursionGuard(*this);
-	TypedName typedName = createWithLocation<TypedName>();
-	typedName.name = YulString{expectAsmIdentifier()};
-	if (m_flavour == AsmFlavour::Yul)
-	{
-		expectToken(Token::Colon);
-		typedName.location.end = endPosition();
-		typedName.type = YulString{expectAsmIdentifier()};
-	}
-	return typedName;
-}
-
-string Parser::expectAsmIdentifier()
-{
-	string name = currentLiteral();
-	if (m_flavour == AsmFlavour::Yul)
-	{
-		switch (currentToken())
-		{
-		case Token::Return:
-		case Token::Byte:
-		case Token::Address:
-		case Token::Bool:
-			advance();
-			return name;
-		default:
-			break;
-		}
-	}
-	else if (instructions().count(name))
-		fatalParserError("Cannot use instruction names for identifier names.");
-	expectToken(Token::Identifier);
-	return name;
-}
-
-bool Parser::isValidNumberLiteral(string const& _literal)
-{
-	try
-	{
-		// Try to convert _literal to u256.
-		auto tmp = u256(_literal);
-		(void) tmp;
-	}
-	catch (...)
-	{
-		return false;
-	}
-	if (boost::starts_with(_literal, "0x"))
-		return true;
-	else
-		return _literal.find_first_not_of("0123456789") == string::npos;
-}
diff --git a/libsolidity/inlineasm/AsmParser.h b/libsolidity/inlineasm/AsmParser.h
deleted file mode 100644
index 9e13799a..00000000
--- a/libsolidity/inlineasm/AsmParser.h
+++ /dev/null
@@ -1,95 +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/>.
-*/
-/**
- * @author Christian <c@ethdev.com>
- * @date 2016
- * Solidity inline assembly parser.
- */
-
-#pragma once
-
-#include <memory>
-#include <vector>
-#include <libsolidity/inlineasm/AsmData.h>
-#include <liblangutil/SourceLocation.h>
-#include <liblangutil/Scanner.h>
-#include <liblangutil/ParserBase.h>
-
-namespace dev
-{
-namespace solidity
-{
-namespace assembly
-{
-
-class Parser: public langutil::ParserBase
-{
-public:
-	explicit Parser(langutil::ErrorReporter& _errorReporter, AsmFlavour _flavour = AsmFlavour::Loose):
-		ParserBase(_errorReporter), m_flavour(_flavour) {}
-
-	/// Parses an inline assembly block starting with `{` and ending with `}`.
-	/// @param _reuseScanner if true, do check for end of input after the `}`.
-	/// @returns an empty shared pointer on error.
-	std::shared_ptr<Block> parse(std::shared_ptr<langutil::Scanner> const& _scanner, bool _reuseScanner);
-
-protected:
-	using ElementaryOperation = boost::variant<assembly::Instruction, assembly::Literal, assembly::Identifier>;
-
-	/// Creates an inline assembly node with the given source location.
-	template <class T> T createWithLocation(langutil::SourceLocation const& _loc = {}) const
-	{
-		T r;
-		r.location = _loc;
-		if (r.location.isEmpty())
-		{
-			r.location.start = position();
-			r.location.end = endPosition();
-		}
-		if (!r.location.sourceName)
-			r.location.sourceName = sourceName();
-		return r;
-	}
-	langutil::SourceLocation location() const { return {position(), endPosition(), sourceName()}; }
-
-	Block parseBlock();
-	Statement parseStatement();
-	Case parseCase();
-	ForLoop parseForLoop();
-	/// Parses a functional expression that has to push exactly one stack element
-	assembly::Expression parseExpression();
-	static std::map<std::string, dev::solidity::Instruction> const& instructions();
-	static std::map<dev::solidity::Instruction, std::string> const& instructionNames();
-	/// Parses an elementary operation, i.e. a literal, identifier or instruction.
-	/// This will parse instructions even in strict mode as part of the full parser
-	/// for FunctionalInstruction.
-	ElementaryOperation parseElementaryOperation();
-	VariableDeclaration parseVariableDeclaration();
-	FunctionDefinition parseFunctionDefinition();
-	assembly::Expression parseCall(ElementaryOperation&& _initialOp);
-	TypedName parseTypedName();
-	std::string expectAsmIdentifier();
-
-	static bool isValidNumberLiteral(std::string const& _literal);
-
-private:
-	AsmFlavour m_flavour = AsmFlavour::Loose;
-};
-
-}
-}
-}
diff --git a/libsolidity/inlineasm/AsmPrinter.cpp b/libsolidity/inlineasm/AsmPrinter.cpp
deleted file mode 100644
index 7151fcfa..00000000
--- a/libsolidity/inlineasm/AsmPrinter.cpp
+++ /dev/null
@@ -1,250 +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/>.
-*/
-/**
- * @author Christian <c@ethdev.com>
- * @date 2017
- * Converts a parsed assembly into its textual form.
- */
-
-#include <libsolidity/inlineasm/AsmPrinter.h>
-#include <libsolidity/inlineasm/AsmData.h>
-#include <liblangutil/Exceptions.h>
-
-#include <libdevcore/CommonData.h>
-
-#include <boost/algorithm/string.hpp>
-#include <boost/algorithm/string/replace.hpp>
-#include <boost/range/adaptor/transformed.hpp>
-
-#include <memory>
-#include <functional>
-
-using namespace std;
-using namespace dev;
-using namespace dev::solidity;
-using namespace dev::solidity::assembly;
-
-//@TODO source locations
-
-string AsmPrinter::operator()(assembly::Instruction const& _instruction)
-{
-	solAssert(!m_yul, "");
-	solAssert(isValidInstruction(_instruction.instruction), "Invalid instruction");
-	return boost::to_lower_copy(instructionInfo(_instruction.instruction).name);
-}
-
-string AsmPrinter::operator()(assembly::Literal const& _literal)
-{
-	switch (_literal.kind)
-	{
-	case LiteralKind::Number:
-		solAssert(isValidDecimal(_literal.value.str()) || isValidHex(_literal.value.str()), "Invalid number literal");
-		return _literal.value.str() + appendTypeName(_literal.type);
-	case LiteralKind::Boolean:
-		solAssert(_literal.value.str() == "true" || _literal.value.str() == "false", "Invalid bool literal.");
-		return ((_literal.value.str() == "true") ? "true" : "false") + appendTypeName(_literal.type);
-	case LiteralKind::String:
-		break;
-	}
-
-	string out;
-	for (char c: _literal.value.str())
-		if (c == '\\')
-			out += "\\\\";
-		else if (c == '"')
-			out += "\\\"";
-		else if (c == '\b')
-			out += "\\b";
-		else if (c == '\f')
-			out += "\\f";
-		else if (c == '\n')
-			out += "\\n";
-		else if (c == '\r')
-			out += "\\r";
-		else if (c == '\t')
-			out += "\\t";
-		else if (c == '\v')
-			out += "\\v";
-		else if (!isprint(c, locale::classic()))
-		{
-			ostringstream o;
-			o << std::hex << setfill('0') << setw(2) << (unsigned)(unsigned char)(c);
-			out += "\\x" + o.str();
-		}
-		else
-			out += c;
-	return "\"" + out + "\"" + appendTypeName(_literal.type);
-}
-
-string AsmPrinter::operator()(assembly::Identifier const& _identifier)
-{
-	solAssert(!_identifier.name.empty(), "Invalid identifier.");
-	return _identifier.name.str();
-}
-
-string AsmPrinter::operator()(assembly::FunctionalInstruction const& _functionalInstruction)
-{
-	solAssert(!m_yul, "");
-	solAssert(isValidInstruction(_functionalInstruction.instruction), "Invalid instruction");
-	return
-		boost::to_lower_copy(instructionInfo(_functionalInstruction.instruction).name) +
-		"(" +
-		boost::algorithm::join(
-			_functionalInstruction.arguments | boost::adaptors::transformed(boost::apply_visitor(*this)),
-			", ") +
-		")";
-}
-
-string AsmPrinter::operator()(ExpressionStatement const& _statement)
-{
-	return boost::apply_visitor(*this, _statement.expression);
-}
-
-string AsmPrinter::operator()(assembly::Label const& _label)
-{
-	solAssert(!m_yul, "");
-	solAssert(!_label.name.empty(), "Invalid label.");
-	return _label.name.str() + ":";
-}
-
-string AsmPrinter::operator()(assembly::StackAssignment const& _assignment)
-{
-	solAssert(!m_yul, "");
-	solAssert(!_assignment.variableName.name.empty(), "Invalid variable name.");
-	return "=: " + (*this)(_assignment.variableName);
-}
-
-string AsmPrinter::operator()(assembly::Assignment const& _assignment)
-{
-	solAssert(_assignment.variableNames.size() >= 1, "");
-	string variables = (*this)(_assignment.variableNames.front());
-	for (size_t i = 1; i < _assignment.variableNames.size(); ++i)
-		variables += ", " + (*this)(_assignment.variableNames[i]);
-	return variables + " := " + boost::apply_visitor(*this, *_assignment.value);
-}
-
-string AsmPrinter::operator()(assembly::VariableDeclaration const& _variableDeclaration)
-{
-	string out = "let ";
-	out += boost::algorithm::join(
-		_variableDeclaration.variables | boost::adaptors::transformed(
-			[this](TypedName argument) { return formatTypedName(argument); }
-		),
-		", "
-	);
-	if (_variableDeclaration.value)
-	{
-		out += " := ";
-		out += boost::apply_visitor(*this, *_variableDeclaration.value);
-	}
-	return out;
-}
-
-string AsmPrinter::operator()(assembly::FunctionDefinition const& _functionDefinition)
-{
-	solAssert(!_functionDefinition.name.empty(), "Invalid function name.");
-	string out = "function " + _functionDefinition.name.str() + "(";
-	out += boost::algorithm::join(
-		_functionDefinition.parameters | boost::adaptors::transformed(
-			[this](TypedName argument) { return formatTypedName(argument); }
-		),
-		", "
-	);
-	out += ")";
-	if (!_functionDefinition.returnVariables.empty())
-	{
-		out += " -> ";
-		out += boost::algorithm::join(
-			_functionDefinition.returnVariables | boost::adaptors::transformed(
-				[this](TypedName argument) { return formatTypedName(argument); }
-			),
-			", "
-		);
-	}
-
-	return out + "\n" + (*this)(_functionDefinition.body);
-}
-
-string AsmPrinter::operator()(assembly::FunctionCall const& _functionCall)
-{
-	return
-		(*this)(_functionCall.functionName) + "(" +
-		boost::algorithm::join(
-			_functionCall.arguments | boost::adaptors::transformed(boost::apply_visitor(*this)),
-			", " ) +
-		")";
-}
-
-string AsmPrinter::operator()(If const& _if)
-{
-	solAssert(_if.condition, "Invalid if condition.");
-	return "if " + boost::apply_visitor(*this, *_if.condition) + "\n" + (*this)(_if.body);
-}
-
-string AsmPrinter::operator()(Switch const& _switch)
-{
-	solAssert(_switch.expression, "Invalid expression pointer.");
-	string out = "switch " + boost::apply_visitor(*this, *_switch.expression);
-	for (auto const& _case: _switch.cases)
-	{
-		if (!_case.value)
-			out += "\ndefault ";
-		else
-			out += "\ncase " + (*this)(*_case.value) + " ";
-		out += (*this)(_case.body);
-	}
-	return out;
-}
-
-string AsmPrinter::operator()(assembly::ForLoop const& _forLoop)
-{
-	solAssert(_forLoop.condition, "Invalid for loop condition.");
-	string out = "for ";
-	out += (*this)(_forLoop.pre);
-	out += "\n";
-	out += boost::apply_visitor(*this, *_forLoop.condition);
-	out += "\n";
-	out += (*this)(_forLoop.post);
-	out += "\n";
-	out += (*this)(_forLoop.body);
-	return out;
-}
-
-string AsmPrinter::operator()(Block const& _block)
-{
-	if (_block.statements.empty())
-		return "{\n}";
-	string body = boost::algorithm::join(
-		_block.statements | boost::adaptors::transformed(boost::apply_visitor(*this)),
-		"\n"
-	);
-	boost::replace_all(body, "\n", "\n    ");
-	return "{\n    " + body + "\n}";
-}
-
-string AsmPrinter::formatTypedName(TypedName _variable) const
-{
-	solAssert(!_variable.name.empty(), "Invalid variable name.");
-	return _variable.name.str() + appendTypeName(_variable.type);
-}
-
-string AsmPrinter::appendTypeName(YulString _type) const
-{
-	if (m_yul)
-		return ":" + _type.str();
-	return "";
-}
diff --git a/libsolidity/inlineasm/AsmPrinter.h b/libsolidity/inlineasm/AsmPrinter.h
deleted file mode 100644
index 72048975..00000000
--- a/libsolidity/inlineasm/AsmPrinter.h
+++ /dev/null
@@ -1,68 +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/>.
-*/
-/**
- * @author Christian <c@ethdev.com>
- * @date 2017
- * Converts a parsed assembly into its textual form.
- */
-
-#pragma once
-
-#include <libsolidity/inlineasm/AsmDataForward.h>
-
-#include <libyul/YulString.h>
-
-#include <boost/variant.hpp>
-
-namespace dev
-{
-namespace solidity
-{
-namespace assembly
-{
-
-class AsmPrinter: public boost::static_visitor<std::string>
-{
-public:
-	explicit AsmPrinter(bool _yul = false): m_yul(_yul) {}
-
-	std::string operator()(assembly::Instruction const& _instruction);
-	std::string operator()(assembly::Literal const& _literal);
-	std::string operator()(assembly::Identifier const& _identifier);
-	std::string operator()(assembly::FunctionalInstruction const& _functionalInstruction);
-	std::string operator()(assembly::ExpressionStatement const& _expr);
-	std::string operator()(assembly::Label const& _label);
-	std::string operator()(assembly::StackAssignment const& _assignment);
-	std::string operator()(assembly::Assignment const& _assignment);
-	std::string operator()(assembly::VariableDeclaration const& _variableDeclaration);
-	std::string operator()(assembly::FunctionDefinition const& _functionDefinition);
-	std::string operator()(assembly::FunctionCall const& _functionCall);
-	std::string operator()(assembly::If const& _if);
-	std::string operator()(assembly::Switch const& _switch);
-	std::string operator()(assembly::ForLoop const& _forLoop);
-	std::string operator()(assembly::Block const& _block);
-
-private:
-	std::string formatTypedName(TypedName _variable) const;
-	std::string appendTypeName(yul::YulString _type) const;
-
-	bool m_yul = false;
-};
-
-}
-}
-}
diff --git a/libsolidity/inlineasm/AsmScope.cpp b/libsolidity/inlineasm/AsmScope.cpp
deleted file mode 100644
index 10893b96..00000000
--- a/libsolidity/inlineasm/AsmScope.cpp
+++ /dev/null
@@ -1,98 +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/>.
-*/
-/**
- * Scopes for identifiers.
- */
-
-#include <libsolidity/inlineasm/AsmScope.h>
-
-using namespace std;
-using namespace dev;
-using namespace dev::solidity::assembly;
-
-bool Scope::registerLabel(yul::YulString _name)
-{
-	if (exists(_name))
-		return false;
-	identifiers[_name] = Label();
-	return true;
-}
-
-bool Scope::registerVariable(yul::YulString _name, YulType const& _type)
-{
-	if (exists(_name))
-		return false;
-	Variable variable;
-	variable.type = _type;
-	identifiers[_name] = variable;
-	return true;
-}
-
-bool Scope::registerFunction(yul::YulString _name, std::vector<YulType> const& _arguments, std::vector<YulType> const& _returns)
-{
-	if (exists(_name))
-		return false;
-	identifiers[_name] = Function{_arguments, _returns};
-	return true;
-}
-
-Scope::Identifier* Scope::lookup(yul::YulString _name)
-{
-	bool crossedFunctionBoundary = false;
-	for (Scope* s = this; s; s = s->superScope)
-	{
-		auto id = s->identifiers.find(_name);
-		if (id != s->identifiers.end())
-		{
-			if (crossedFunctionBoundary && id->second.type() == typeid(Scope::Variable))
-				return nullptr;
-			else
-				return &id->second;
-		}
-
-		if (s->functionScope)
-			crossedFunctionBoundary = true;
-	}
-	return nullptr;
-}
-
-bool Scope::exists(yul::YulString _name) const
-{
-	if (identifiers.count(_name))
-		return true;
-	else if (superScope)
-		return superScope->exists(_name);
-	else
-		return false;
-}
-
-size_t Scope::numberOfVariables() const
-{
-	size_t count = 0;
-	for (auto const& identifier: identifiers)
-		if (identifier.second.type() == typeid(Scope::Variable))
-			count++;
-	return count;
-}
-
-bool Scope::insideFunction() const
-{
-	for (Scope const* s = this; s; s = s->superScope)
-		if (s->functionScope)
-			return true;
-	return false;
-}
diff --git a/libsolidity/inlineasm/AsmScope.h b/libsolidity/inlineasm/AsmScope.h
deleted file mode 100644
index 12c05716..00000000
--- a/libsolidity/inlineasm/AsmScope.h
+++ /dev/null
@@ -1,105 +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/>.
-*/
-/**
- * Scopes for identifiers.
- */
-
-#pragma once
-
-#include <liblangutil/Exceptions.h>
-
-#include <libyul/YulString.h>
-
-#include <libdevcore/Visitor.h>
-
-#include <boost/variant.hpp>
-#include <boost/optional.hpp>
-
-#include <functional>
-#include <memory>
-
-namespace dev
-{
-namespace solidity
-{
-namespace assembly
-{
-
-struct Scope
-{
-	using YulType = yul::YulString;
-	using LabelID = size_t;
-
-	struct Variable { YulType type; };
-	struct Label { };
-	struct Function
-	{
-		std::vector<YulType> arguments;
-		std::vector<YulType> returns;
-	};
-
-	using Identifier = boost::variant<Variable, Label, Function>;
-	using Visitor = GenericVisitor<Variable const, Label const, Function const>;
-	using NonconstVisitor = GenericVisitor<Variable, Label, Function>;
-
-	bool registerVariable(yul::YulString _name, YulType const& _type);
-	bool registerLabel(yul::YulString _name);
-	bool registerFunction(
-		yul::YulString _name,
-		std::vector<YulType> const& _arguments,
-		std::vector<YulType> const& _returns
-	);
-
-	/// Looks up the identifier in this or super scopes and returns a valid pointer if found
-	/// or a nullptr if not found. Variable lookups up across function boundaries will fail, as
-	/// will any lookups across assembly boundaries.
-	/// The pointer will be invalidated if the scope is modified.
-	/// @param _crossedFunction if true, we already crossed a function boundary during recursive lookup
-	Identifier* lookup(yul::YulString _name);
-	/// Looks up the identifier in this and super scopes (will not find variables across function
-	/// boundaries and generally stops at assembly boundaries) and calls the visitor, returns
-	/// false if not found.
-	template <class V>
-	bool lookup(yul::YulString _name, V const& _visitor)
-	{
-		if (Identifier* id = lookup(_name))
-		{
-			boost::apply_visitor(_visitor, *id);
-			return true;
-		}
-		else
-			return false;
-	}
-	/// @returns true if the name exists in this scope or in super scopes (also searches
-	/// across function and assembly boundaries).
-	bool exists(yul::YulString _name) const;
-
-	/// @returns the number of variables directly registered inside the scope.
-	size_t numberOfVariables() const;
-	/// @returns true if this scope is inside a function.
-	bool insideFunction() const;
-
-	Scope* superScope = nullptr;
-	/// If true, variables from the super scope are not visible here (other identifiers are),
-	/// but they are still taken into account to prevent shadowing.
-	bool functionScope = false;
-	std::map<yul::YulString, Identifier> identifiers;
-};
-
-}
-}
-}
diff --git a/libsolidity/inlineasm/AsmScopeFiller.cpp b/libsolidity/inlineasm/AsmScopeFiller.cpp
deleted file mode 100644
index 09934bd8..00000000
--- a/libsolidity/inlineasm/AsmScopeFiller.cpp
+++ /dev/null
@@ -1,181 +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/>.
-*/
-/**
- * Module responsible for registering identifiers inside their scopes.
- */
-
-#include <libsolidity/inlineasm/AsmScopeFiller.h>
-
-#include <libsolidity/inlineasm/AsmData.h>
-#include <libsolidity/inlineasm/AsmScope.h>
-#include <libsolidity/inlineasm/AsmAnalysisInfo.h>
-
-#include <liblangutil/ErrorReporter.h>
-#include <liblangutil/Exceptions.h>
-
-#include <libdevcore/CommonData.h>
-
-#include <boost/range/adaptor/reversed.hpp>
-
-#include <memory>
-#include <functional>
-
-using namespace std;
-using namespace dev;
-using namespace langutil;
-using namespace dev::solidity;
-using namespace dev::solidity::assembly;
-
-ScopeFiller::ScopeFiller(AsmAnalysisInfo& _info, ErrorReporter& _errorReporter):
-	m_info(_info), m_errorReporter(_errorReporter)
-{
-	m_currentScope = &scope(nullptr);
-}
-
-bool ScopeFiller::operator()(ExpressionStatement const& _expr)
-{
-	return boost::apply_visitor(*this, _expr.expression);
-}
-
-bool ScopeFiller::operator()(Label const& _item)
-{
-	if (!m_currentScope->registerLabel(_item.name))
-	{
-		//@TODO secondary location
-		m_errorReporter.declarationError(
-			_item.location,
-			"Label name " + _item.name.str() + " already taken in this scope."
-		);
-		return false;
-	}
-	return true;
-}
-
-bool ScopeFiller::operator()(assembly::VariableDeclaration const& _varDecl)
-{
-	for (auto const& variable: _varDecl.variables)
-		if (!registerVariable(variable, _varDecl.location, *m_currentScope))
-			return false;
-	return true;
-}
-
-bool ScopeFiller::operator()(assembly::FunctionDefinition const& _funDef)
-{
-	bool success = true;
-	vector<Scope::YulType> arguments;
-	for (auto const& _argument: _funDef.parameters)
-		arguments.emplace_back(_argument.type.str());
-	vector<Scope::YulType> returns;
-	for (auto const& _return: _funDef.returnVariables)
-		returns.emplace_back(_return.type.str());
-	if (!m_currentScope->registerFunction(_funDef.name, arguments, returns))
-	{
-		//@TODO secondary location
-		m_errorReporter.declarationError(
-			_funDef.location,
-			"Function name " + _funDef.name.str() + " already taken in this scope."
-		);
-		success = false;
-	}
-
-	auto virtualBlock = m_info.virtualBlocks[&_funDef] = make_shared<Block>();
-	Scope& varScope = scope(virtualBlock.get());
-	varScope.superScope = m_currentScope;
-	m_currentScope = &varScope;
-	varScope.functionScope = true;
-	for (auto const& var: _funDef.parameters + _funDef.returnVariables)
-		if (!registerVariable(var, _funDef.location, varScope))
-			success = false;
-
-	if (!(*this)(_funDef.body))
-		success = false;
-
-	solAssert(m_currentScope == &varScope, "");
-	m_currentScope = m_currentScope->superScope;
-
-	return success;
-}
-
-bool ScopeFiller::operator()(If const& _if)
-{
-	return (*this)(_if.body);
-}
-
-bool ScopeFiller::operator()(Switch const& _switch)
-{
-	bool success = true;
-	for (auto const& _case: _switch.cases)
-		if (!(*this)(_case.body))
-			success = false;
-	return success;
-}
-
-bool ScopeFiller::operator()(ForLoop const& _forLoop)
-{
-	Scope* originalScope = m_currentScope;
-
-	bool success = true;
-	if (!(*this)(_forLoop.pre))
-		success = false;
-	m_currentScope = &scope(&_forLoop.pre);
-	if (!boost::apply_visitor(*this, *_forLoop.condition))
-		success = false;
-	if (!(*this)(_forLoop.body))
-		success = false;
-	if (!(*this)(_forLoop.post))
-		success = false;
-
-	m_currentScope = originalScope;
-
-	return success;
-}
-
-bool ScopeFiller::operator()(Block const& _block)
-{
-	bool success = true;
-	scope(&_block).superScope = m_currentScope;
-	m_currentScope = &scope(&_block);
-
-	for (auto const& s: _block.statements)
-		if (!boost::apply_visitor(*this, s))
-			success = false;
-
-	m_currentScope = m_currentScope->superScope;
-	return success;
-}
-
-bool ScopeFiller::registerVariable(TypedName const& _name, SourceLocation const& _location, Scope& _scope)
-{
-	if (!_scope.registerVariable(_name.name, _name.type))
-	{
-		//@TODO secondary location
-		m_errorReporter.declarationError(
-			_location,
-			"Variable name " + _name.name.str() + " already taken in this scope."
-		);
-		return false;
-	}
-	return true;
-}
-
-Scope& ScopeFiller::scope(Block const* _block)
-{
-	auto& scope = m_info.scopes[_block];
-	if (!scope)
-		scope = make_shared<Scope>();
-	return *scope;
-}
diff --git a/libsolidity/inlineasm/AsmScopeFiller.h b/libsolidity/inlineasm/AsmScopeFiller.h
deleted file mode 100644
index 7454fd6c..00000000
--- a/libsolidity/inlineasm/AsmScopeFiller.h
+++ /dev/null
@@ -1,88 +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/>.
-*/
-/**
- * Module responsible for registering identifiers inside their scopes.
- */
-
-#pragma once
-
-#include <libsolidity/inlineasm/AsmDataForward.h>
-
-#include <boost/variant.hpp>
-
-#include <functional>
-#include <memory>
-
-namespace langutil
-{
-class ErrorReporter;
-struct SourceLocation;
-}
-
-namespace dev
-{
-namespace solidity
-{
-namespace assembly
-{
-
-struct TypedName;
-struct Scope;
-struct AsmAnalysisInfo;
-
-/**
- * Fills scopes with identifiers and checks for name clashes.
- * Does not resolve references.
- */
-class ScopeFiller: public boost::static_visitor<bool>
-{
-public:
-	ScopeFiller(AsmAnalysisInfo& _info, langutil::ErrorReporter& _errorReporter);
-
-	bool operator()(assembly::Instruction const&) { return true; }
-	bool operator()(assembly::Literal const&) { return true; }
-	bool operator()(assembly::Identifier const&) { return true; }
-	bool operator()(assembly::FunctionalInstruction const&) { return true; }
-	bool operator()(assembly::ExpressionStatement const& _expr);
-	bool operator()(assembly::Label const& _label);
-	bool operator()(assembly::StackAssignment const&) { return true; }
-	bool operator()(assembly::Assignment const&) { return true; }
-	bool operator()(assembly::VariableDeclaration const& _variableDeclaration);
-	bool operator()(assembly::FunctionDefinition const& _functionDefinition);
-	bool operator()(assembly::FunctionCall const&) { return true; }
-	bool operator()(assembly::If const& _if);
-	bool operator()(assembly::Switch const& _switch);
-	bool operator()(assembly::ForLoop const& _forLoop);
-	bool operator()(assembly::Block const& _block);
-
-private:
-	bool registerVariable(
-		TypedName const& _name,
-		langutil::SourceLocation const& _location,
-		Scope& _scope
-	);
-
-	Scope& scope(assembly::Block const* _block);
-
-	Scope* m_currentScope = nullptr;
-	AsmAnalysisInfo& m_info;
-	langutil::ErrorReporter& m_errorReporter;
-};
-
-}
-}
-}