[PATCH] Fix PR15267

[Michael Liao]

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.

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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