# luajit-remake/luajit-remake

An ongoing attempt to re-engineer LuaJIT from scratch

Repository: https://github.com/luajit-remake/luajit-remake
Canonical: https://ross.abutalabs.com/products/luajit-remake
Language: C++
License Family: other
Last push: 2025-02-18T00:38:10+00:00

## Health v2 (maintenance only)
Score: 35/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 7, release rhythm 35, longevity 100
- inputs: {"age_days": 1560, "days_push": 562, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1291, forks 39 (observed 2026-08-28T04:04:15.617662+00:00)

## What it is
A from-scratch re-engineering of LuaJIT aiming to build a multi-tier method-JIT for Lua, with the interpreter and JIT tiers auto-generated from a semantic description of LuaJIT bytecodes. It currently ships a feature-complete Lua 5.1 interpreter with a re-engineered runtime using hidden classes, though the JIT tiers are still in progress.

## Use cases
- run Lua scripts with a faster interpreter
- study how JIT compilers are built
- research auto-generated interpreters from bytecode semantics
- benchmark Lua interpreter performance
- learn about hidden-class based Lua table implementations

## When to choose
- you need a faster Lua 5.1 interpreter on x86-64 Linux for benchmarking or research
- you want to study or contribute to novel JIT/interpreter generation techniques

## When to avoid
- you need a production-ready Lua runtime with garbage collection
- you need portability beyond x86-64 Linux
- you rely on the package library (require/module) or full standard library coverage

## Facets
- artifact type: library
- maturity: experimental
- function: interpreter, compiler, programming-language
- domain: programming-languages, compilers, performance
- platform: cpp
- tags: lua, luajit, jit, method-jit, bytecode, hidden-class, code-generation, research, linux, x86-64

## Member repositories
- luajit-remake/luajit-remake (main) score 35

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:15.617662+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:54:47.593016+00:00, confidence not recorded.
  - readme: https://github.com/luajit-remake/luajit-remake (fetched 2026-08-28T04:04:15.617662+00:00, sha 43b9b876f13f)
- Data as of 2026-08-30T08:39:29.467469+00:00.