solidity/test/libyul/yulOptimizerTests/expressionJoiner/multi_reference.yul

{
	// This is not joined because a is referenced multiple times
	let a := mload(2)
	let b := add(a, a)
}
// ====
// step: expressionJoiner
// ----
// {
//     let a := mload(2)
//     let b := add(a, a)
// }