rellic
llvm-cbe
rellic | llvm-cbe | |
---|---|---|
5 | 14 | |
510 | 790 | |
0.8% | 0.9% | |
5.5 | 6.5 | |
4 months ago | 4 days ago | |
C++ | C++ | |
Apache License 2.0 | GNU General Public License v3.0 or later |
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rellic
- Understanding Objective-C by transpiling it to C++
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An Algorithm for Structuring Flowgraphs (1977) [pdf]
Rellic[0] is a decompiler that uses a similar, more modern approach to turn LLVM IR into goto-free C code
[0]: https://github.com/lifting-bits/rellic
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Decompiler Explorer
Rellic [1] implements an algorithm that generates goto-free control flows (citation in README), which would be a significant improvement against what Ghidra/IDA generates currently.
Unfortunately it looks like the maintenance state of the pieces around Rellic isn't very good, and it's quite rocket science to get it building. It doesn't have as much UI/GUI as Ghidra either so it's a bit far from accessible right now.
[1]: https://github.com/lifting-bits/rellic
- Snowman native code to C/C++ decompiler for x86/x86_64/ARM
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Q: Irreducible Control Flow Graph in current compilers?
Worthlooking into "No more gotos" paper, you can find a copy here: https://github.com/lifting-bits/rellic/blob/master/docs/NoMoreGotos.pdf
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?
rz-ghidra - Deep ghidra decompiler and sleigh disassembler integration for rizin
mrustc - Alternative rust compiler (re-implementation)
faust - Functional programming language for signal processing and sound synthesis
nim-esp8266-sdk - Nim wrapper for the ESP8266 NON-OS SDK
lumen - A private Lumina server for IDA Pro
llvm-project - Fork of LLVM with Xtensa specific patches. To be upstreamed.
ghidra - Ghidra is a software reverse engineering (SRE) framework
prometeo - An experimental Python-to-C transpiler and domain specific language for embedded high-performance computing
mull - Practical mutation testing and fault injection for C and C++
ulisp - A version of the Lisp programming language for ATmega-based Arduino boards.
cling - The cling C++ interpreter
acados - Fast and embedded solvers for nonlinear optimal control