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Remove wasm type conversions.

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This commit is contained in:
chriseth 2020-02-04 23:28:44 +01:00 committed by Kamil Śliwak
parent 8086ddd3bd
commit 50e8d6850f
2 changed files with 3 additions and 60 deletions
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57
libyul/backends/wasm/WasmCodeTransform.cpp
View File

@ -112,8 +112,6 @@ wasm::Expression WasmCodeTransform::operator()(ExpressionStatement const& _state
wasm::Expression WasmCodeTransform::operator()(FunctionCall const& _call)
{
bool typeConversionNeeded = false;
if (BuiltinFunction const* builtin = m_dialect.builtin(_call.functionName.name))
{
if (_call.functionName.name.str().substr(0, 4) == "eth.")
@ -133,7 +131,6 @@ wasm::Expression WasmCodeTransform::operator()(FunctionCall const& _call)
imp.paramTypes.emplace_back(translatedType(param));
m_functionsToImport[builtin->name] = std::move(imp);
}
typeConversionNeeded = true;
}
else if (builtin->literalArguments && contains(builtin->literalArguments.value(), true))
{
@ -147,18 +144,10 @@ wasm::Expression WasmCodeTransform::operator()(FunctionCall const& _call)
return wasm::BuiltinCall{_call.functionName.name.str(), std::move(literals)};
}
else
{
wasm::BuiltinCall call{
return wasm::BuiltinCall{
_call.functionName.name.str(),
injectTypeConversionIfNeeded(visit(_call.arguments), builtin->parameters)
visit(_call.arguments)
};
if (!builtin->returns.empty() && !builtin->returns.front().empty() && builtin->returns.front() != "i64"_yulstring)
{
yulAssert(builtin->returns.front() == "i32"_yulstring, "Invalid type " + builtin->returns.front().str());
call = wasm::BuiltinCall{"i64.extend_i32_u", make_vector<wasm::Expression>(std::move(call))};
}
return {std::move(call)};
}
}
// If this function returns multiple values, then the first one will
@ -166,13 +155,7 @@ wasm::Expression WasmCodeTransform::operator()(FunctionCall const& _call)
// The values have to be used right away in an assignment or variable declaration,
// so it is handled there.
wasm::FunctionCall funCall{_call.functionName.name.str(), visit(_call.arguments)};
if (typeConversionNeeded)
// Inject type conversion if needed on the fly. This is just a temporary measure
// and can be removed once we have proper types in Yul.
return injectTypeConversionIfNeeded(std::move(funCall));
else
return {std::move(funCall)};
return wasm::FunctionCall{_call.functionName.name.str(), visit(_call.arguments)};
}
wasm::Expression WasmCodeTransform::operator()(Identifier const& _identifier)
@ -358,40 +341,6 @@ wasm::FunctionDefinition WasmCodeTransform::translateFunction(yul::FunctionDefin
return fun;
}
wasm::Expression WasmCodeTransform::injectTypeConversionIfNeeded(wasm::FunctionCall _call) const
{
wasm::FunctionImport const& import = m_functionsToImport.at(YulString{_call.functionName});
for (size_t i = 0; i < _call.arguments.size(); ++i)
if (import.paramTypes.at(i) == wasm::Type::i32)
_call.arguments[i] = wasm::BuiltinCall{"i32.wrap_i64", make_vector<wasm::Expression>(std::move(_call.arguments[i]))};
else
yulAssert(import.paramTypes.at(i) == wasm::Type::i64, "Invalid Wasm type");
if (import.returnType && *import.returnType != wasm::Type::i64)
{
yulAssert(*import.returnType == wasm::Type::i32, "Invalid Wasm type");
return wasm::BuiltinCall{"i64.extend_i32_u", make_vector<wasm::Expression>(std::move(_call))};
}
return {std::move(_call)};
}
vector<wasm::Expression> WasmCodeTransform::injectTypeConversionIfNeeded(
vector<wasm::Expression> _arguments,
vector<Type> const& _parameterTypes
) const
{
for (size_t i = 0; i < _arguments.size(); ++i)
if (_parameterTypes.at(i) == "i32"_yulstring)
_arguments[i] = wasm::BuiltinCall{"i32.wrap_i64", make_vector<wasm::Expression>(std::move(_arguments[i]))};
else
yulAssert(
_parameterTypes.at(i).empty() || _parameterTypes.at(i) == "i64"_yulstring,
"Unknown type " + _parameterTypes.at(i).str()
);
return _arguments;
}
string WasmCodeTransform::newLabel()
{
return m_nameDispenser.newName("label_"_yulstring).str();

6
libyul/backends/wasm/WasmCodeTransform.h
View File

@ -79,12 +79,6 @@ private:
wasm::FunctionDefinition translateFunction(yul::FunctionDefinition const& _funDef);
wasm::Expression injectTypeConversionIfNeeded(wasm::FunctionCall _call) const;
std::vector<wasm::Expression> injectTypeConversionIfNeeded(
std::vector<wasm::Expression> _arguments,
std::vector<yul::Type> const& _parameterTypes
) const;
std::string newLabel();
/// Makes sure that there are at least @a _amount global variables.
void allocateGlobals(size_t _amount);