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IRGeneratorForStatements: Handle internal calls to functions from specific base contracts as static calls rather than calls via pointers

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This commit is contained in:
Kamil Śliwak 2020-04-20 23:21:09 +02:00
parent 397ea18b78
commit 56a85d6cb3
3 changed files with 52 additions and 20 deletions
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68
libsolidity/codegen/ir/IRGeneratorForStatements.cpp
View File

@ -579,32 +579,60 @@ void IRGeneratorForStatements::endVisit(FunctionCall const& _functionCall)
else
args.emplace_back(convert(*arguments[i], *parameterTypes[i]).commaSeparatedList());
if (auto identifier = dynamic_cast<Identifier const*>(&_functionCall.expression()))
optional<FunctionDefinition const*> functionDef;
if (auto memberAccess = dynamic_cast<MemberAccess const*>(&_functionCall.expression()))
{
solAssert(!functionType->bound(), "");
if (auto functionDef = dynamic_cast<FunctionDefinition const*>(identifier->annotation().referencedDeclaration))
functionDef = dynamic_cast<FunctionDefinition const*>(memberAccess->annotation().referencedDeclaration);
if (functionDef.value() != nullptr)
solAssert(functionType->declaration() == *memberAccess->annotation().referencedDeclaration, "");
else
{
define(_functionCall) <<
m_context.enqueueFunctionForCodeGeneration(
functionDef->resolveVirtual(m_context.mostDerivedContract())
) <<
"(" <<
joinHumanReadable(args) <<
")\n";
return;
solAssert(dynamic_cast<VariableDeclaration const*>(memberAccess->annotation().referencedDeclaration), "");
solAssert(!functionType->hasDeclaration(), "");
}
}
else if (auto identifier = dynamic_cast<Identifier const*>(&_functionCall.expression()))
{
solAssert(!functionType->bound(), "");
define(_functionCall) <<
// NOTE: internalDispatch() takes care of adding the function to function generation queue
m_context.internalDispatch(
TupleType(functionType->parameterTypes()).sizeOnStack(),
TupleType(functionType->returnParameterTypes()).sizeOnStack()
) <<
"(" <<
IRVariable(_functionCall.expression()).part("functionIdentifier").name() <<
joinHumanReadablePrefixed(args) <<
")\n";
if (auto unresolvedFunctionDef = dynamic_cast<FunctionDefinition const*>(identifier->annotation().referencedDeclaration))
{
functionDef = &unresolvedFunctionDef->resolveVirtual(m_context.mostDerivedContract());
solAssert(functionType->declaration() == *identifier->annotation().referencedDeclaration, "");
}
else
{
functionDef = nullptr;
solAssert(dynamic_cast<VariableDeclaration const*>(identifier->annotation().referencedDeclaration), "");
solAssert(!functionType->hasDeclaration(), "");
}
}
else
// Not a simple expression like x or A.x
functionDef = nullptr;
solAssert(functionDef.has_value(), "");
solAssert(functionDef.value() == nullptr || functionDef.value()->isImplemented(), "");
if (functionDef.value() != nullptr)
define(_functionCall) <<
m_context.enqueueFunctionForCodeGeneration(*functionDef.value()) <<
"(" <<
joinHumanReadable(args) <<
")\n";
else
define(_functionCall) <<
// NOTE: internalDispatch() takes care of adding the function to function generation queue
m_context.internalDispatch(
TupleType(functionType->parameterTypes()).sizeOnStack(),
TupleType(functionType->returnParameterTypes()).sizeOnStack()
) <<
"(" <<
IRVariable(_functionCall.expression()).part("functionIdentifier").name() <<
joinHumanReadablePrefixed(args) <<
")\n";
break;
}
case FunctionType::Kind::External:

2
test/libsolidity/semanticTests/functionCall/base_base_overload.sol
View File

@ -34,6 +34,8 @@ contract Child is Base {
BaseBase.init(c, d);
}
}
// ====
// compileViaYul: also
// ----
// x() -> 0
// y() -> 0

2
test/libsolidity/semanticTests/functionCall/base_overload.sol
View File

@ -18,6 +18,8 @@ contract Child is Base {
Base.init(c, d);
}
}
// ====
// compileViaYul: also
// ----
// x() -> 0
// y() -> 0