[PATCH] Fix PR15267

[Hal Finkel]

----- Original Message -----
> From: "Michael Liao" <michael.liao at intel.com>
> To: "Hal Finkel" <hfinkel at anl.gov>
> Cc: "Duncan Sands" <baldrick at free.fr>, llvm-commits at cs.uiuc.edu
> Sent: Wednesday, February 20, 2013 11:39:03 AM
> Subject: Re: [PATCH] Fix PR15267
> 
> 
> Hi Hal,
> 
> Could you send us the code generated showing this issue? I am
> currently
> working on fixing the symmetric issue (truncstore) of PR15267. Not
> sure
> you refer to the same one.

See http://llvm.org/bugs/show_bug.cgi?id=15131
(I think this should actually be marked as a duplicate of a very old bug on this same issue, but which I now cannot find; Duncan, do you know what I'm thinking about?)

 -Hal

> 
> Yours
> - Michael
> 
> On Wed, 2013-02-20 at 11:32 -0600, Hal Finkel wrote:
> > ----- Original Message -----
> > > From: "Duncan Sands" <baldrick at free.fr>
> > > To: "Nadav Rotem" <nrotem at apple.com>
> > > Cc: llvm-commits at cs.uiuc.edu
> > > Sent: Wednesday, February 20, 2013 11:23:33 AM
> > > Subject: Re: [PATCH] Fix PR15267
> > > 
> > > Hi Nadav,
> > > 
> > > On 20/02/13 17:53, Nadav Rotem wrote:
> > > >
> > > > On Feb 20, 2013, at 2:35 AM, Duncan Sands <baldrick at free.fr
> > > > <mailto:baldrick at free.fr>> wrote:
> > > >
> > > >> it sounds like you consider <4 x i1> to be bitpacked in
> > > >> memory,
> > > >> like i4.
> > > >> Is that right?
> > > >
> > > > Yes. We need this in order to be consistent with targets that
> > > > support mask
> > > > registers.
> > > 
> > > while it makes sense to me, can you please document this
> > > somewhere
> > > and ensure
> > > that getTypeAllocSize and friends are fixed (should return 1
> > > byte!).
> > 
> > Also, we need to make sure that global constants are emitted
> > correctly. Currently, if you make a <N x i1> global constant, it
> > will emit each element into a separate byte.
> > 
> >  -Hal
> > 
> > > 
> > > Ciao, Duncan.
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> 
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