[coreboot] r983 - in coreboot-v3: device include/device
stepan at coresystems.de
Thu Nov 6 21:21:55 CET 2008
Vincent Legoll wrote:
> On Thu, Nov 6, 2008 at 5:16 PM, Stefan Reinauer <stepan at coresystems.de> wrote:
>> Vincent Legoll wrote:
>>> Isn't all that kind of things doable via function pointers and link-time dead
>>> code elimination ? That would achieve the no ifdeffery goal, and may be
>>> cleaner code...
>> Link time optimization would suggest we look into compiling with LLVM
>> instead of gcc.
> I was believing that current linkers discarded code of unused functions.
> Would LLVM really be needed for that to happen ? Or are you thing of
> more involved optimizations ?
Any non-static functions in a file will stay in the final binary, unless
you do some trickery like -combine, but that usually requires some
changes to the build system.
llvm will kick those functions out at link time. As does the plan9
linker, as far as I understood.
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