[PATCH] Fix PR15267

[Duncan Sands]

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!).

Ciao, Duncan.