'EXTSLOAD' opcode proposal

[Ethernian]

related:

EIP-1153: Transient storage opcodes

I have written this EIP after having reviewed EIP-1087 (EIP-1087: Net gas metering for SSTORE operations) and its discussion (EIP-1087: Net storage gas metering for the EVM - #35 by Arachnid). I propose an alternative design (which Nick said he also considered at some point), which in my opinion can bring bigger benefits than EIP-1087, at lower cost (by this I mean new opcodes with very simple semantics and gas accounting rules, and keeping the existing gas accounting rules for SSTORE intact)…

may be

Account-bound EVM memory

Withdrew PR to flesh it out a bit more. (https: //github .com/ethereum/EIPs/pull/1666) Transient storage repo, related: https://github.com/androlo/tstorage Much of this comes from experimenting with transient storage (EIP: Transient storage opcodes). There are three types of memory involved here: EVM-bound memory - protected memory used by the EVM to store things like call-, and returndata. Can be read from contract code. Account-bound memory - Lasts throughout an entire transaction and can…