llvm回到人类可读的源语言？ [英] llvm ir back to human-readable source language?

问题描述

有没有一个简单的方法从llvm ir到工作源代码？

Is there an easy way of going from llvm ir to working source code?

具体来说，我想从一些简单的C ++代码开始修改POD （主要是int，float等数组），将其转换为llvm ir，执行一些简单的分析和翻译，然后将其转换回C ++代码？

Specifically, I'd like to start with some simple C++ code that merely modifies PODs (mainly arrays of ints, floats, etc), convert it to llvm ir, perform some simple analysis and translation on it and then convert it back into C++ code?

真的不介意任何名字被改变，我只是希望能够在做机器依赖的优化之前对源代码进行修改。

It don't really mind about any of the names getting mangled, I'd just like to be able to hack about with the source before doing the machine-dependent optimisations.

推荐答案

这里有一个问题...可能无法轻易地将IR表示为语言。

There is an issue here... it might not be possible to easily represent the IR back into the language.

，您可能可以获得某些 表示，但可能较少可读。

I mean, you'll probably be able to get some representation, but it might be less readable.

是的，IR不关心高级语义，没有它...

The issue is that the IR is not concerned with high-level semantic, and without it...

我宁愿建议你学习阅读IR。我可以读一点它没有这么多的努力，我远不是一个llvm专家。

I'd rather advise you to learn to read the IR. I can read a bit of it without that much effort, and I am far from being a llvm expert.

否则，你可以从C的C代码。它不会更加类似于你的C ++代码，但你可能会觉得更好没有ssa和phi节点。

Otherwise, you can C code from the IR. It won't be much more similar to your C++ code, but you'll perhaps feel better without ssa and phi nodes.

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