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Drop support for evm15 and eip-615.

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This commit is contained in:
Daniel Kirchner
2021-03-09 15:56:03 +01:00
parent 5c2cd8d553
commit a75424eec4
18 changed files with 40 additions and 225 deletions
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libyul/backends/evm/EVMCodeTransform.cpp
+16 -37
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@@ -101,7 +101,6 @@ CodeTransform::CodeTransform(
bool _allowStackOpt,
EVMDialect const& _dialect,
BuiltinContext& _builtinContext,
bool _evm15,
ExternalIdentifierAccess _identifierAccess,
bool _useNamedLabelsForFunctions,
shared_ptr<Context> _context
@@ -111,7 +110,6 @@ CodeTransform::CodeTransform(
m_dialect(_dialect),
m_builtinContext(_builtinContext),
m_allowStackOpt(_allowStackOpt),
m_evm15(_evm15),
m_useNamedLabelsForFunctions(_useNamedLabelsForFunctions),
m_identifierAccess(std::move(_identifierAccess)),
m_context(std::move(_context))
@@ -269,11 +267,9 @@ void CodeTransform::operator()(FunctionCall const& _call)
{
m_assembly.setSourceLocation(_call.location);
EVMAssembly::LabelID returnLabel(numeric_limits<EVMAssembly::LabelID>::max()); // only used for evm 1.0
if (!m_evm15)
{
returnLabel = m_assembly.newLabelId();
m_assembly.appendLabelReference(returnLabel);
}
returnLabel = m_assembly.newLabelId();
m_assembly.appendLabelReference(returnLabel);
Scope::Function* function = nullptr;
yulAssert(m_scope->lookup(_call.functionName.name, GenericVisitor{
@@ -285,21 +281,12 @@ void CodeTransform::operator()(FunctionCall const& _call)
for (auto const& arg: _call.arguments | boost::adaptors::reversed)
visitExpression(arg);
m_assembly.setSourceLocation(_call.location);
if (m_evm15)
m_assembly.appendJumpsub(
functionEntryID(_call.functionName.name, *function),
static_cast<int>(function->arguments.size()),
static_cast<int>(function->returns.size())
);
else
{
m_assembly.appendJumpTo(
functionEntryID(_call.functionName.name, *function),
static_cast<int>(function->returns.size() - function->arguments.size()) - 1,
AbstractAssembly::JumpType::IntoFunction
);
m_assembly.appendLabel(returnLabel);
}
m_assembly.appendJumpTo(
functionEntryID(_call.functionName.name, *function),
static_cast<int>(function->returns.size() - function->arguments.size()) - 1,
AbstractAssembly::JumpType::IntoFunction
);
m_assembly.appendLabel(returnLabel);
}
}
@@ -406,7 +393,7 @@ void CodeTransform::operator()(FunctionDefinition const& _function)
yulAssert(m_scope->identifiers.count(_function.name), "");
Scope::Function& function = std::get<Scope::Function>(m_scope->identifiers.at(_function.name));
size_t height = m_evm15 ? 0 : 1;
size_t height = 1;
yulAssert(m_info.scopes.at(&_function.body), "");
Scope* varScope = m_info.scopes.at(m_info.virtualBlocks.at(&_function).get()).get();
yulAssert(varScope, "");
@@ -419,10 +406,7 @@ void CodeTransform::operator()(FunctionDefinition const& _function)
m_assembly.setSourceLocation(_function.location);
int const stackHeightBefore = m_assembly.stackHeight();
if (m_evm15)
m_assembly.appendBeginsub(functionEntryID(_function.name, function), static_cast<int>(_function.parameters.size()));
else
m_assembly.appendLabel(functionEntryID(_function.name, function));
m_assembly.appendLabel(functionEntryID(_function.name, function));
m_assembly.setStackHeight(static_cast<int>(height));
@@ -444,7 +428,6 @@ void CodeTransform::operator()(FunctionDefinition const& _function)
m_allowStackOpt,
m_dialect,
m_builtinContext,
m_evm15,
m_identifierAccess,
m_useNamedLabelsForFunctions,
m_context
@@ -474,8 +457,7 @@ void CodeTransform::operator()(FunctionDefinition const& _function)
// This vector holds the desired target positions of all stack slots and is
// modified parallel to the actual stack.
vector<int> stackLayout;
if (!m_evm15)
stackLayout.push_back(static_cast<int>(_function.returnVariables.size())); // Move return label to the top
stackLayout.push_back(static_cast<int>(_function.returnVariables.size())); // Move return label to the top
stackLayout += vector<int>(_function.parameters.size(), -1); // discard all arguments
for (size_t i = 0; i < _function.returnVariables.size(); ++i)
@@ -512,13 +494,10 @@ void CodeTransform::operator()(FunctionDefinition const& _function)
yulAssert(i == static_cast<size_t>(stackLayout[i]), "Error reshuffling stack.");
}
}
if (m_evm15)
m_assembly.appendReturnsub(static_cast<int>(_function.returnVariables.size()), stackHeightBefore);
else
m_assembly.appendJump(
stackHeightBefore - static_cast<int>(_function.returnVariables.size()),
AbstractAssembly::JumpType::OutOfFunction
);
m_assembly.appendJump(
stackHeightBefore - static_cast<int>(_function.returnVariables.size()),
AbstractAssembly::JumpType::OutOfFunction
);
m_assembly.setStackHeight(stackHeightBefore);
}