Remove duplicative pair storage

Uniswap / v2-core

🦄 🦄 Core smart contracts of Uniswap V2

https://uniswap.org/docs

GNU General Public License v3.0

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Remove duplicative pair storage #92

Closed fulldecent closed 4 years ago

fulldecent commented 4 years ago

This removes an unused SSTORE and saves 20,000 gas for pair deployment.

moodysalem commented 4 years ago

Thanks for the contribution. Duplicating the storage was deliberate (getPair can be called with token0/token1 or token1/token0 in either order) , and Uniswap v2 is deployed and will never change.