Awesome

Huff Proxies

A few Ethereum delegate-call proxies written in raw bytecode via Huff. The goal is proxies as close to the metal as possible with minimal deployment costs and call overhead.

Constant Proxy

huff_modules/proxy-constant.huff

The cheapest of the cheap. Deploys a proxy with a hardcoded target address, which means no SSTORE operations on deployment and no SLOAD overhead on calls. The hardocded address can be changed in the TARGET macro. This has not been tested much, but seems to be working and fairly close to optimized.

Storage Proxy

huff_modules/proxy-storage.huff

Deploys a more traditional proxy with a modifiable target address. Takes a single constructor argument (the target), and stores it at the TARGET_SLOT. Working, but not well tested or optimized. Also, the bytecode in proxies.json is correct, but this module won't compile with the current version of huff. I've compiled it with a patched version of huff running locally, and Aztec has a fix in the works.

2D Proxy

huff_modules/proxy-2d.huff

Idea borrowed from here. A proxy that delegatecalls it's constructor. Takes the first constructor argument as the target and stores it at the TARGET_SLOT. The second constructor argument is the constructor target. All remaining constructor arguments are copied into memory, then the proxy delegatecalls to the constructor target with the constructor args as calldata. I haven't even started on this one yet.

Usage

git submodule update --init --recursive npm install

Compile bytecode

npm run compile - compiles bytecode to proxies.json

Run tests

npm run test

Contributions and optimizations welcome, or feel free to fork and make it your own.