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Fix signextend for user defined value types.

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This commit is contained in:
chriseth 2021-09-28 15:39:18 +02:00
parent 7b7e38768c
commit cb052611cf
2 changed files with 21 additions and 15 deletions
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21
libsolidity/codegen/LValue.cpp
View File

@ -227,27 +227,30 @@ void StorageItem::retrieveValue(SourceLocation const&, bool _remove) const
m_context << Instruction::POP << Instruction::SLOAD;
else
{
Type const* type = m_dataType;
if (type->category() == Type::Category::UserDefinedValueType)
type = type->encodingType();
bool cleaned = false;
m_context
<< Instruction::SWAP1 << Instruction::SLOAD << Instruction::SWAP1
<< u256(0x100) << Instruction::EXP << Instruction::SWAP1 << Instruction::DIV;
if (m_dataType->category() == Type::Category::FixedPoint)
if (type->category() == Type::Category::FixedPoint)
// implementation should be very similar to the integer case.
solUnimplemented("Not yet implemented - FixedPointType.");
if (m_dataType->leftAligned())
if (type->leftAligned())
{
CompilerUtils(m_context).leftShiftNumberOnStack(256 - 8 * m_dataType->storageBytes());
CompilerUtils(m_context).leftShiftNumberOnStack(256 - 8 * type->storageBytes());
cleaned = true;
}
else if (
m_dataType->category() == Type::Category::Integer &&
dynamic_cast<IntegerType const&>(*m_dataType).isSigned()
type->category() == Type::Category::Integer &&
dynamic_cast<IntegerType const&>(*type).isSigned()
)
{
m_context << u256(m_dataType->storageBytes() - 1) << Instruction::SIGNEXTEND;
m_context << u256(type->storageBytes() - 1) << Instruction::SIGNEXTEND;
cleaned = true;
}
else if (FunctionType const* fun = dynamic_cast<decltype(fun)>(m_dataType))
else if (FunctionType const* fun = dynamic_cast<decltype(fun)>(type))
{
if (fun->kind() == FunctionType::Kind::External)
{
@ -263,8 +266,8 @@ void StorageItem::retrieveValue(SourceLocation const&, bool _remove) const
}
if (!cleaned)
{
solAssert(m_dataType->sizeOnStack() == 1, "");
m_context << ((u256(0x1) << (8 * m_dataType->storageBytes())) - 1) << Instruction::AND;
solAssert(type->sizeOnStack() == 1, "");
m_context << ((u256(0x1) << (8 * type->storageBytes())) - 1) << Instruction::AND;
}
}
}

15
libsolidity/codegen/YulUtilFunctions.cpp
View File

@ -2912,9 +2912,12 @@ string YulUtilFunctions::cleanupFromStorageFunction(Type const& _type)
)");
templ("functionName", functionName);
unsigned storageBytes = _type.storageBytes();
if (IntegerType const* type = dynamic_cast<IntegerType const*>(&_type))
if (type->isSigned() && storageBytes != 32)
Type const* encodingType = &_type;
if (_type.category() == Type::Category::UserDefinedValueType)
encodingType = _type.encodingType();
unsigned storageBytes = encodingType->storageBytes();
if (IntegerType const* intType = dynamic_cast<IntegerType const*>(encodingType))
if (intType->isSigned() && storageBytes != 32)
{
templ("cleaned", "signextend(" + to_string(storageBytes - 1) + ", value)");
return templ.render();
@ -2922,10 +2925,10 @@ string YulUtilFunctions::cleanupFromStorageFunction(Type const& _type)
bool leftAligned = false;
if (
_type.category() != Type::Category::Function ||
dynamic_cast<FunctionType const&>(_type).kind() == FunctionType::Kind::External
encodingType->category() != Type::Category::Function ||
dynamic_cast<FunctionType const&>(*encodingType).kind() == FunctionType::Kind::External
)
leftAligned = _type.leftAligned();
leftAligned = encodingType->leftAligned();
if (storageBytes == 32)
templ("cleaned", "value");