_This repository has been superseded by https://github.com/paradigmxyz/revmc. _
Evaluate performance gains to expect when EVM were to compile hot contracts into machine code (rather than interpreting the EVM bytecode)
- Support all instructions
- Performance evaluation
- Error handling
- Gas accounting
Setup:
- LLVM 14 installed with
brewin/opt/homebrew/opt/llvm
Run:
LLVM_SYS_140_PREFIX=/opt/homebrew/opt/llvm cargo run
What it does:
- Fibonacci sequence calculator hand-implemented in EVM bytecode
- Runs it in EVM interpreter
- Compiles it to machine code and executes it
- You compare that the outputs correspond to the 15th Fibonacci number (which is 377)
How to interpret the output:
- Modulo indexing convention, 15th Fibonacci number is 377 (says Google)
- Last line of demo output (this is from JIT VM): return value is 377
- Scrolling up past the LLVM IR: last state of interpreter has 377 in the 0th stack entry
RUST_BACKTRACE=1 LLVM_SYS_140_PREFIX=/opt/homebrew/opt/llvm RUST_MIN_STACK=8388608 cargo test -- --nocapture
Install:
sudo apt-get install llvm-14 llvm-14-dev libllvm14
Adjust paths above accordingly (leaving LLVM_SYS_140_PREFIX=/opt/homebrew/opt/llvm away entirely "works for me").
- https://github.com/TheDan64/inkwell
- https://www.mattkeeter.com/projects/elfjit/
- https://github.com/mkeeter/advent-of-code/blob/master/2018/day21-jit/src/main.rs
- https://github.com/bluealloy/revm
- ethereum/evmone#320
- https://github.com/axic/snailtracer
- https://doc.rust-lang.org/reference/type-layout.html