mir
Befunge
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mir
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Ravi is a dialect of Lua, with JIT and AOT compilers
MIR comes from the Rubyverse and isn't related to LLVM MLIR.
https://github.com/vnmakarov/mir?tab=readme-ov-file#mir
- Mir: Strongly typed IR to implement fast and lightweight interpreters and JITs
- Implementing Interactive Languages
- I developed a faster Ruby interpreter
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Are Hoistings Possible for C++?
When you say a fork of LLVM, am I correct in assuming that you specifically mean a fork of Clang? I don't see how the compiler backend would affect support for language extensions, regardless of whether it's an exception to that such as Tcc, Cproc, the MIR C jitter, lacc, 8cc, 9cc, and chibicc. Most of those are not for production, excluding Cproc and Tcc (at least according to Suckless or Oasis).
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Suggestion for a backend?
MIR
- Ask HN: Recommendation for general purpose JIT compiler
- How to learn compilers: LLVM Edition
- What instructions are needed for a language vm
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Nelua Programming Language
> I wish C was scriptable
C kinda can be used as scripting language with MIR project https://github.com/vnmakarov/mir
It was released just a few days ago, and I've successfully use it as an alternative and fast C compiler with Nelua.
Befunge
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The Rust Performance Book
1. C compilers don't do a good job, & thus even CPython, which has historically stuck to rather vanilla C, uses computed goto, as described in https://eli.thegreenplace.net/2012/07/12/computed-goto-for-e...
I resorted to similar techniques in optimizing Befunge: https://github.com/serprex/Befunge (See bejit.c & marsh.c/marsh.h)
2. Rust enums are not variable sized, think of them as tagged C unions, where the Rust compiler can sometimes apply tricks to make Option> the same size as Vec
3. match can specialize for straight forward cases, when in doubt use https://godbolt.org
- Ask HN: Recommendation for general purpose JIT compiler
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Why asynchronous Rust doesn't work
I've found async to be straight forward anytime I've used it. Promise#then is equivalent to callbacks
async/await often requires very little changes compared to synchronous code, whereas reworking a program into callbacks is much more impactful. & the async/await compilation process tends to produce better performance in addition to this. My first async/await work was a few years ago to increase a data importer's performance by an order of magnitude compared to the blocking code
Here's an example where looping made for a callback that recursively called, using async/await I get to use a plain loop:
before: https://github.com/serprex/Befunge/blob/946ea0024c4d87a1b75d...
after: https://github.com/serprex/Befunge/blob/9677ddddb7a26b7a17dd...
I don't see why people find it so complicated to separate begin-compute & wait-on-compute
I've since rewritten a nodejs game server into rust, https://github.com/serprex/openEtG/tree/master/src/rs/server... handleget/handlews are quite straight forward
- Python interpreter written in rust reaches 10000 commits
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Compilers Are Hard
You'll also find them used in CPython's ceval.c
I use them in both my C befunge implementations:
https://github.com/serprex/Befunge/blob/c97c8e63a4eb262f3a60...
https://github.com/serprex/Befunge/blob/c97c8e63a4eb262f3a60...
What are some alternatives?
asmjit - Low-latency machine code generation
openEtG
LuaJIT - Mirror of the LuaJIT git repository
Rustler - Safe Rust bridge for creating Erlang NIF functions
Cwerg - The best C-like language that can be implemented in 10kLOC.
qbe-rs - QBE IR in natural Rust data structures
ecl
ubpf - Userspace eBPF VM
kcs - Scripting in C with JIT(x64)/VM.
rune - An embeddable dynamic programming language for Rust.
terra - Terra is a low-level system programming language that is embedded in and meta-programmed by the Lua programming language.
minivm - A VM That is Dynamic and Fast