Optimize bn254/groth16 solidity verifier. #376
Merged
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Problem
Existing implementation of Pairing library allocated additional memory on each addition and multiplication, which can quadratically increase gas cost with larger public input.
This PR addresses several things:
input
frommemory
tocalldata
. Ideally public input should be constructed off-chain and remain only in call data. It is important to notice, that caller smart contract might already do it, but EVM implicitly copy call data to memory, which is not needed in this case.