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Optimization for exponentiation when the base is a literal

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This commit is contained in:
Harikrishnan Mulackal
2020-10-12 18:54:58 +02:00
committed by hrkrshnn
parent 7a86a61b08
commit 418aa01c5b
5 changed files with 232 additions and 4 deletions
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libsolidity/codegen/ir/IRGeneratorForStatements.cpp
+21 -4
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@@ -695,17 +695,34 @@ bool IRGeneratorForStatements::visit(BinaryOperation const& _binOp)
solAssert(false, "Unknown comparison operator.");
define(_binOp) << expr << "\n";
}
else if (TokenTraits::isShiftOp(op) || op == Token::Exp)
else if (op == Token::Exp)
{
IRVariable left = convert(_binOp.leftExpression(), *commonType);
IRVariable right = convert(_binOp.rightExpression(), *type(_binOp.rightExpression()).mobileType());
if (op == Token::Exp)
if (auto rationalNumberType = dynamic_cast<RationalNumberType const*>(_binOp.leftExpression().annotation().type))
{
solAssert(rationalNumberType->integerType(), "Invalid literal as the base for exponentiation.");
solAssert(dynamic_cast<IntegerType const*>(commonType), "");
define(_binOp) << m_utils.overflowCheckedIntLiteralExpFunction(
*rationalNumberType,
dynamic_cast<IntegerType const&>(right.type()),
dynamic_cast<IntegerType const&>(*commonType)
) << "(" << right.name() << ")\n";
}
else
define(_binOp) << m_utils.overflowCheckedIntExpFunction(
dynamic_cast<IntegerType const&>(left.type()),
dynamic_cast<IntegerType const&>(right.type())
) << "(" << left.name() << ", " << right.name() << ")\n";
else
define(_binOp) << shiftOperation(_binOp.getOperator(), left, right) << "\n";
}
else if (TokenTraits::isShiftOp(op))
{
IRVariable left = convert(_binOp.leftExpression(), *commonType);
IRVariable right = convert(_binOp.rightExpression(), *type(_binOp.rightExpression()).mobileType());
define(_binOp) << shiftOperation(_binOp.getOperator(), left, right) << "\n";
}
else
{