Looking into LLVM
Kevin Kofler
kevin.kofler at chello.at
Wed Oct 28 10:24:51 UTC 2009
Jud Craft wrote:
> On Mon, Oct 26, 2009 at 12:31 PM, Kevin Kofler wrote:
>> But this is about C++.
>
> I don't mean to misunderstand, but if I recall from your very first
> post in this thread...
>
>> Actually, the ABI issue is only if you use the C code generator, not the
>> native ones.
>
> Hence I thought you were talking about ABI issues with C.
You misunderstood me. The C code generator is an LLVM *back*end, not a
frontend. The frontend is what recognizes the input language, the backend is
what defines the output LLVM generates.
> I'm not up on how LLVM frontend integration works, so I actually don't
> understand the distinction between "the LLVM C Backend" and "the
> native LLVM backends".
LLVM can either directly output machine code (native backend) for some
architectures or it can output preoptimized C code (especially for those
architectures which don't have a native backend). The latter is what the "C
code generator" or "C backend" does.
The ABI issues are when using one of the C++ frontends with the C backend.
> Simply, can I write and compile a GTK program with LLVM?
Yes.
Kevin Kofler
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