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Move stack height to generation phase.

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This commit is contained in:
chriseth 2017-06-14 00:01:06 +02:00
parent 45d96959f8
commit c554145f4d
3 changed files with 9 additions and 11 deletions
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12
libjulia/backends/evm/EVMCodeTransform.cpp
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@ -64,8 +64,7 @@ void CodeTransform::operator()(VariableDeclaration const& _varDecl)
for (auto const& variable: _varDecl.variables)
{
auto& var = boost::get<Scope::Variable>(m_scope->identifiers.at(variable.name));
var.stackHeight = height++;
var.active = true;
m_context->variableStackHeights[&var] = height++;
}
checkStackHeight(&_varDecl);
}
@ -288,8 +287,7 @@ void CodeTransform::operator()(FunctionDefinition const& _function)
for (auto const& v: _function.arguments | boost::adaptors::reversed)
{
auto& var = boost::get<Scope::Variable>(varScope->identifiers.at(v.name));
var.stackHeight = height++;
var.active = true;
m_context->variableStackHeights[&var] = height++;
}
m_assembly.setSourceLocation(_function.location);
@ -311,8 +309,7 @@ void CodeTransform::operator()(FunctionDefinition const& _function)
for (auto const& v: _function.returns)
{
auto& var = boost::get<Scope::Variable>(varScope->identifiers.at(v.name));
var.stackHeight = height++;
var.active = true;
m_context->variableStackHeights[&var] = height++;
// Preset stack slots for return variables to zero.
m_assembly.appendConstant(u256(0));
}
@ -427,7 +424,8 @@ void CodeTransform::generateAssignment(Identifier const& _variableName)
int CodeTransform::variableHeightDiff(solidity::assembly::Scope::Variable const& _var, bool _forSwap)
{
int heightDiff = m_assembly.stackHeight() - _var.stackHeight;
solAssert(m_context->variableStackHeights.count(&_var), "");
int heightDiff = m_assembly.stackHeight() - m_context->variableStackHeights[&_var];
if (heightDiff <= (_forSwap ? 1 : 0) || heightDiff > (_forSwap ? 17 : 16))
{
solUnimplemented(

6
libjulia/backends/evm/EVMCodeTransform.h
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@ -81,8 +81,10 @@ public:
protected:
struct Context
{
std::map<solidity::assembly::Scope::Label const*, AbstractAssembly::LabelID> labelIDs;
std::map<solidity::assembly::Scope::Function const*, AbstractAssembly::LabelID> functionEntryIDs;
using Scope = solidity::assembly::Scope;
std::map<Scope::Label const*, AbstractAssembly::LabelID> labelIDs;
std::map<Scope::Function const*, AbstractAssembly::LabelID> functionEntryIDs;
std::map<Scope::Variable const*, int> variableStackHeights;
};
CodeTransform(

2
libsolidity/inlineasm/AsmScope.h
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@ -67,8 +67,6 @@ struct Scope
struct Variable
{
/// Used during code generation to store the stack height. @todo move there.
int stackHeight = 0;
/// Used during analysis to check whether we already passed the declaration inside the block.
/// @todo move there.
bool active = false;