[LLVMdev] Emit only one function of the module to native code

[Duncan Sands]

On 19/11/12 22:31, Christophe Duvernois wrote:
> Ok thanks,
> I thought there was a more direct way to do it...

I think this is supposed to be possible.  llvm-gcc had logic for emitting code
for each function immediately after generating it, but it was ifdef'd out with
the remark that it was buggy.  You might want to take a look at how llvm-gcc
was trying to do it.  Since no-one is actually doing this kind of thing AFAIK,
it is likely that you will hit some bugs in the code generators even if your
approach is valid.

Ciao, Duncan.

>
> 2012/11/19 Eric Christopher <echristo at gmail.com <mailto:echristo at gmail.com>>
>
>     llvm-extract and then llc?
>
>     -eric
>
>
>     On Mon, Nov 19, 2012 at 10:25 AM, Christophe Duvernois
>     <christophe.duvernois at gmail.com <mailto:christophe.duvernois at gmail.com>> wrote:
>
>         Hi
>
>         I use llvm-3.1. I have a large module and i want to emit native code (or
>         assembly) for one function.
>
>         I tried to replace the PassManager in llc by a FunctionPassManager but I
>         have a crash so this is probably not the good way to do it. (cf attached
>         my simple test)
>
>         Is it possible to write one function from the module? What is the good
>         way to do it?
>
>         Thanks in advance.
>
>         Christophe
>
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