alumina
llvm-cbe
alumina | llvm-cbe | |
---|---|---|
10 | 14 | |
154 | 794 | |
1.3% | 1.4% | |
4.6 | 6.5 | |
2 months ago | 12 days ago | |
Rust | C++ | |
MIT License | GNU General Public License v3.0 or later |
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alumina
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Ask HN: LLVM vs. C
You can go surprisingly far with C, though LLVM is probably a better long-term option for a serious compiler, because it's a tool made for the job (unless you target exotic and/or embedded platforms that don't have LLVM support - but that's fairly unlikely).
C is very easy to get started with if you don't already know LLVM. The downside is that once your compiler is reasonably complete, you may spend quite a bit of time working around quirks of C (e.g. int promotion is very annoying when you already have full type information, so your compiler either has to understand C semantics fairly well or defensively cast every subexpression).
I have a C backend in my compiler (https://github.com/alumina-lang/alumina) and it works really well, though the generated C is really ugly and assembly-like. With #line directives, you can also get source-level debugging (gdb/lldb) that just works out of the box.
There are a few goodies that LLVM gives you that you don't get with C, like coverage (https://clang.llvm.org/docs/SourceBasedCodeCoverage.html). It works when done through clang, but easily be made to track the original sources.
- Alumina Programming Language
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Show HN: Alumina Programming Language
Totally agreed about FFI. I wanted to make it easy to interop with C code and write expressive bindings.
Check for example the language bindings to LLVM's C API (fairly low level) and Tree-Sitter which is used internally (a bit higher level bindings)
https://github.com/tibordp/alumina/tree/master/libraries/llv...
https://github.com/tibordp/alumina/blob/master/libraries/tre...
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Alumina programming language
However, I am not super happy with the current structure of the compiler and for the self-hosted one I'd like to fix those mistakes. For example, mono.rs is a giant module that does everything from mixin expansion, lowering from AST to IR, type checking and monomorphization. There are some bugs in Alumina that are quite hard to fix without a big refactoring (e.g. if a nested function binds generic parameters of the parent) and I'd like to get it right the next time around.
llvm-cbe
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Ask HN: LLVM vs. C
So how does the LLVM C backend work then?
https://github.com/JuliaHubOSS/llvm-cbe
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rust to c complication?
One alternative worth mentioning, though, would be the LLVM C Backend maintained by the Julia community.
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Programming language that compiles to clean C89 or C99?
If you drop "easily" and "human" (/s) from your requirements list, then the C backend for LLVM might work. Then you can choose any programming language you want that has LLVM 10-compatible frontend.
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Easy way to convert a C++ library into straight C ?
If you really must have something that compiles in C (e.g. for a platform where you only have a C compiler) there's an LLVM backend that outputs C code: https://github.com/JuliaComputingOSS/llvm-cbe
- Snowman native code to C/C++ decompiler for x86/x86_64/ARM
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Can Rust do every low level stuff C/C++ do?
You can convert llvm bitcode to C and then use C compiler, there is such project https://github.com/JuliaComputingOSS/llvm-cbe .
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lipstick: a Rust-like syntax frontend for C
I'm really surprised that the LLVM C backends have continually been resurrected then abandoned over the years. It's a good solution to this sort of thing and would enable a lot of cool stuff like Rust to weird embedded platforms. The most recent one is the Julia backend: https://github.com/JuliaComputingOSS/llvm-cbe
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C++ to C converter?
Check this project out: https://github.com/JuliaComputingOSS/llvm-cbe.
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Show HN: prometeo – a Python-to-C transpiler for high-performance computing
Well IMO it can definitely be rewritten in Julia, and to an easier degree than python since Julia allows hooking into the compiler pipeline at many areas of the stack. It's lispy an built from the ground up for codegen, with libraries like (https://github.com/JuliaSymbolics/Metatheory.jl) that provide high level pattern matching with e-graphs. The question is whether it's worth your time to learn Julia to do so.
You could also do it at the LLVM level: https://github.com/JuliaComputingOSS/llvm-cbe
For interesting takes on that, you can see https://github.com/JuliaLinearAlgebra/Octavian.jl which relies on loopvectorization.jl to do transforms on Julia AST beyond what LLVM does. Because of that, Octavian.jl beats openblas on many linalg benchmarks
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Writing a SQLite clone from scratch in C
You can try your luck with the "resurrected" C backend: https://github.com/JuliaComputingOSS/llvm-cbe
I don't understand why I see so many requests for LLVM-based languages to change around their backend or IR, that seems to be a huge amount of work for comparatively little benefit. The correct thing to do there is to just add support for those to LLVM.
What are some alternatives?
bitloops-language - Open-source transpiled programming language that helps you write clean code, well-designed systems, and build high-quality software that is testable, auditable and maintainable. Like what you see? Don't forget to star! :star: ^^^
mrustc - Alternative rust compiler (re-implementation)
tree-sitter-visitor - Procedural macro for generating a visitor trait for Tree Sitter Rust bindings
nim-esp8266-sdk - Nim wrapper for the ESP8266 NON-OS SDK
llvm-project - Fork of LLVM with Xtensa specific patches. To be upstreamed.
prometeo - An experimental Python-to-C transpiler and domain specific language for embedded high-performance computing
ulisp - A version of the Lisp programming language for ATmega-based Arduino boards.
acados - Fast and embedded solvers for nonlinear optimal control
abuse - Abuse (1995) by Crack dot Com
rust_sqlite - SQLRite - Simple embedded database modeled off SQLite in Rust
lumen - A private Lumina server for IDA Pro
Lua-RTOS-ESP32 - Lua RTOS for ESP32