draft: gas optimization

[Boffee]

Pasted from discord:

Feature request: bring real world mud2 read/write gas cost to parity with sload and sstore.

Almost all of the overhead that mud2 adds on top of sload and sstore comes from computing static constants onchain.

For the current version of mud2, warm Table.get[StaticField] cost in the ballpark of 2000 + 500 * (# of fields in key schema) + 500 * (# of fields in value schema). This can probably be reduced by 90%+ to < 400 gas:

• Hardcoding the values for getValueSchema and getKeySchema reduces the gas down to a flat 1500.
• Hardcoding everything inside StoreCore.getField except for storage location reduces the gas down to 500.
• simplifying the storage location hash function can reduces the gas down to Storage.load which is 400.
• a custom Storage.loadField might reduce gas further, though not sure by how much.

The same logic is applicable to writes.

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[dk1a]

so far looks really good, I wanted to make basically the same thing and hadn't gotten to it yet. Do tell if you want me to take it off your hands or if u wanna finish it urself

[frolic]

do we even need getFieldLayout if we have it as a constant above and it's more gas efficient to use that? wonder if it's worth just exporting that as a named constant like we do for table ID

[Boffee]

so far looks really good, I wanted to make basically the same thing and hadn't gotten to it yet. Do tell if you want me to take it off your hands or if u wanna finish it urself

Looks like I snatched up all the low hanging fruits lol. Take over if your hands are free. I can help if you're busy with other stuff.

[frolic]

I think ~all of these were merged as separate smaller PRs, so closing this one!