gastest
A repo to demonstrate how viaIR affects https://twitter.com/PatrickAlphaC/status/1503559512824897540
Stars
22
Ecosystems:
Solidity
Gas Trivia
Which among the following three functions are the cheapest?
pragma solidity 0.8.13;
contract Contract {
uint256[] public s_playerFunds;
uint256 public s_totalFunds;
constructor() {
s_playerFunds = [1, 15, 22, 99, 234, 5, 234, 5, 2345, 234, 555, 2424, 55];
}
function a() public {
uint256 totalFunds;
for(uint256 i = 0; i < s_playerFunds.length; i++) {
totalFunds = totalFunds + s_playerFunds[i];
}
s_totalFunds = totalFunds;
}
function b() external {
for(uint256 i = 0; i < s_playerFunds.length; i++) {
s_totalFunds += s_playerFunds[i];
}
}
function c() public {
uint256 totalFunds;
uint256[] memory playerFunds = s_playerFunds;
for(uint256 i = 0; i < playerFunds.length; i++) {
totalFunds = totalFunds + playerFunds[i];
}
s_totalFunds = totalFunds;
}
}
viaIR from 0.8.13!
The Yul optimizer is able to make a much cheaper: https://github.com/hrkrshnn/gastest/commit/63bb419a1389163d2e4189613d1b9641df1c0c57
ContractTest:testa() (gas: 59879)
ContractTest:testb() (gas: 63583)
ContractTest:testc() (gas: 61615)