[LLVMdev] promotion of return value.

[Alireza.Moshtaghi at microchip.com]

Right, I guess theoretically, this stuff could be done entirely in the
frontend, but practically I'm not sure...
At the end of the day, it is enabling an optimization, and front-end is
not necessarily the place for it.

Chris has given a C example in the below email.
http://www.nabble.com/Re%3A-Troubling-promotion-of-return-value-to-Integ
er-...-p17281950.html

Regards
Ali

> -----Original Message-----
> From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu]
On
> Behalf Of Rafael Espindola
> Sent: Friday, March 13, 2009 2:51 PM
> To: LLVM Developers Mailing List
> Subject: Re: [LLVMdev] promotion of return value.
> 
> > This does not bound us to any particular size promotion. The
solution is
> generic enough to address all possibilities (of course new attributes
may
> be needed)
> 
> We are both trying to do the same, I just don't see why this can't be
> done completely in llvm-gcc or clang. Do you have an C example where
> we
> currently do sign extension and that we would be able to avoid it with
> your proposal?
> 
> > Regards
> > Ali
> 
> 
> Cheers,
> --
> Rafael Avila de Espindola
> 
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