[LLVMdev] A Question about LLVM-backend

[Duncan Sands]

Hi 조영필,

 > I want to manipulate LLVM-backend to emit other compiler's IR, in this case,
> VPO's IR.
> So, what i want to know is.. Is there a project to be referred? (For example,
> "Do LLVM-backend -> GIMPLE" project exist?)

as far as I know there is no LLVM IR -> gimple pass.  LLVM used to have a C
backend that turned LLVM IR into C.  I think it was removed in 3.1 already,
because it was buggy and unmaintained, but you can find it in older versions
of LLVM and it may give you some ideas.

> Or, how can I manipulate it easily?

You can write a module pass that iterates over all objects in the module
(global variables, functions etc) and squirts out IR for your other compiler.
That's basically what the C backend did.

Ciao, Duncan.

>
> Thanks,
> Cho Yeong-pil
>
>
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