seaport

Sharing a fun feature in Seaport v1.6 that unlocks big gas savings on EVM chains that support TSTORE without preventing Seaport from being deployed on EVM chains that don't yet support it

During contract creation, Seaport v1.6 deploys a small contract with runtime logic that performs a `TLOAD` then attempts to call it

If the call to this new contract succeeds, Seaport knows that TSTORE is supported and uses it for enforcing its reentrancy lock

If the call fails, Seaport falls back to using SSTORE

However, once the EVM chain in question adds support for TSTORE, anyone can call a "secret" method on Seaport to activate TSTORE usage

This method attempts to call the TLOAD test contract again, and if the call succeeds then Seaport will clear the sentinel value in regular storage, signaling to use TSTORE going forward

EVM chains that don't support TSTORE on deployment will still incur the cost of an SLOAD, but it beats having to pay for an SSTORE!

Very cool - had been wondering if there was an easy way to check for opcode support like this

ser can u first stop auto hiding all our L2 NFTs.