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Consider non-external functions not left-aligned.

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This commit is contained in:
chriseth 2021-09-28 16:07:43 +02:00
parent cb052611cf
commit 77932edb02
3 changed files with 16 additions and 25 deletions
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5
libsolidity/ast/Types.cpp
View File

@ -3072,10 +3072,7 @@ u256 FunctionType::storageSize() const
bool FunctionType::leftAligned() const
{
if (m_kind == Kind::External)
return true;
else
solAssert(false, "Alignment property of non-exportable function type requested.");
return m_kind == Kind::External;
}
unsigned FunctionType::storageBytes() const

27
libsolidity/codegen/LValue.cpp
View File

@ -237,19 +237,6 @@ void StorageItem::retrieveValue(SourceLocation const&, bool _remove) const
if (type->category() == Type::Category::FixedPoint)
// implementation should be very similar to the integer case.
solUnimplemented("Not yet implemented - FixedPointType.");
if (type->leftAligned())
{
CompilerUtils(m_context).leftShiftNumberOnStack(256 - 8 * type->storageBytes());
cleaned = true;
}
else if (
type->category() == Type::Category::Integer &&
dynamic_cast<IntegerType const&>(*type).isSigned()
)
{
m_context << u256(type->storageBytes() - 1) << Instruction::SIGNEXTEND;
cleaned = true;
}
else if (FunctionType const* fun = dynamic_cast<decltype(fun)>(type))
{
if (fun->kind() == FunctionType::Kind::External)
@ -264,6 +251,20 @@ void StorageItem::retrieveValue(SourceLocation const&, bool _remove) const
m_context << Instruction::MUL << Instruction::OR;
}
}
else if (type->leftAligned())
{
CompilerUtils(m_context).leftShiftNumberOnStack(256 - 8 * type->storageBytes());
cleaned = true;
}
else if (
type->category() == Type::Category::Integer &&
dynamic_cast<IntegerType const&>(*type).isSigned()
)
{
m_context << u256(type->storageBytes() - 1) << Instruction::SIGNEXTEND;
cleaned = true;
}
if (!cleaned)
{
solAssert(type->sizeOnStack() == 1, "");

9
libsolidity/codegen/YulUtilFunctions.cpp
View File

@ -2923,16 +2923,9 @@ string YulUtilFunctions::cleanupFromStorageFunction(Type const& _type)
return templ.render();
}
bool leftAligned = false;
if (
encodingType->category() != Type::Category::Function ||
dynamic_cast<FunctionType const&>(*encodingType).kind() == FunctionType::Kind::External
)
leftAligned = encodingType->leftAligned();
if (storageBytes == 32)
templ("cleaned", "value");
else if (leftAligned)
else if (encodingType->leftAligned())
templ("cleaned", shiftLeftFunction(256 - 8 * storageBytes) + "(value)");
else
templ("cleaned", "and(value, " + toCompactHexWithPrefix((u256(1) << (8 * storageBytes)) - 1) + ")");