Re: [PATCH] Re: LLVM and PSEUDO_REG/PSEUDO_PHI

[Jeff Garzik <jeff@xxxxxxxxxx>]

On 08/28/2011 02:23 PM, Linus Torvalds wrote:
> On Sun, Aug 28, 2011 at 10:52 AM, Josh Triplett<josh@xxxxxxxxxxxxxxxx>  wrote:
> > > You should consider all types to be just "blocks of memory", and
> > > sparse has already calculated all offsets etc for you. As far as LLVM
> > > is concerned, the memory has no structure, it's just a blob.
> >
> > I suspect LLVM's optimization passes won't particularly care for that
> > approach.
>
> That's fine. We've already done the CSE and alias analysis on the
> thing. And as mentioned, trying to turn overlapping (or partial)
> accesses into some "named accesses" is just *wrong*. They weren't
> named in the C code either. They are accesses through pointer
> arithmetic. Trying to make them be somehow named would just be crazy.

LLVM just cares about layout.

It does not care about naming (or lack thereof).  Nobody/nothing is 
trying to make them named.

	Jeff


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