revive/README.md

revive

YUL and EVM bytecode recompiler to LLVM, targetting RISC-V on PolkaVM.

Code bases of frontend and code generator are forked adapted from ZKSync zksolc.

Primary goal of this codebase currently is to allow for benchmarks comparing runtime performance against ink!, solang and EVM interpreters.

TODO

The project is in a very early PoC phase; at this stage don't expect the produced code to be working nor to be correct for anything more than a basic flipper contract yet.

• Efficient implementations of byte swaps, memset, memmove and the like
• Use drink! for integration tests once we have 64bit support in PolkaVM
• Exercice schlau and possibly smart-bench benchmark cases
• Tests currently rely on the binary being in $PATH, which is very annoying and requires cargo install all the times
• Define how to do deployments
• Calling conventions for calling other contracts
• Runtime environment isn't fully figured out; implement all EVM builtins
• Iron out many leftovers from the ZKVM target
  • Use of exceptions
  • Change long calls (contract calls)
  • Check all alignments, attributes etc. if they still make sense with our target
• Add a lot more test cases
• Debug information
• Look for and implement further optimizations
• Differential testing against EVM
• Switch to LLVM 18 which has RV{32,64}E upstream
• Minimize scope of "stdlib", favorably implement it in high level language instead of LLVM IR.
• Document differences from EVM
• Audit for bugs and correctness
• Rebranding