Add EIP: Opcode for arbitrary bytecode execution

[0xCamax]

EIP-7982: RUNCODE Opcode for In-Context Bytecode Execution

Summary

This EIP proposes a new RUNCODE opcode that enables execution of arbitrary bytecode from memory within the same execution context. This complements DELEGATECALL by providing an alternative for scenarios where dynamic code doesn't need to be permanently stored on-chain, offering significant gas savings.

Key Benefits

• Alternative to DELEGATECALL: Provides option for temporary/generated code that doesn't require permanent on-chain storage
• Gas Optimization: Saves up to 2,600 gas per execution by eliminating cold address access costs
• Reduced Blockchain Bloat: Avoids deploying temporary bytecode as contracts, reducing state growth
• Deployment Savings: Eliminates need to deploy ephemeral code as contracts (~32,000+ gas savings per deployment)
• Context Preservation: Maintains identical execution context as DELEGATECALL while operating from memory

Use Cases

• Runtime code generation and execution without permanent deployment
• One-time complex calculations that don't justify permanent contract storage
• Temporary computational libraries that change frequently
• Meta-programming patterns where bytecode is generated dynamically
• Mathematical computation libraries that generate optimized bytecode on-demand

[eth-bot]

File EIPS/eip-7982.md

Requires 1 more reviewers from @g11tech, @lightclient, @SamWilsn