contract D { event Deposit(address indexed _from, bytes32 indexed _id, uint _value); function deposit(bytes32 _id) public payable { emit Deposit(msg.sender, _id, msg.value); } } contract C { D d; constructor() { d = new D(); } function deposit(bytes32 _id) public payable { d.deposit(_id); } } // ---- // constructor() -> // gas irOptimized: 165398 // gas legacy: 244800 // gas legacyOptimized: 171615 // deposit(bytes32), 18 wei: 0x1234 -> // ~ emit Deposit(address,bytes32,uint256) from 0x137aa4dfc0911524504fcd4d98501f179bc13b4a: #0xc06afe3a8444fc0004668591e8306bfb9968e79e, #0x1234, 0x00