RKSimon added a comment.

In http://reviews.llvm.org/D20358#446220, @ab wrote:

> In http://reviews.llvm.org/D20358#446218, @ab wrote:
>
> > In http://reviews.llvm.org/D20358#446210, @RKSimon wrote:
> >
> > > Is there any reason why we can't just get rid of all the SSE movnt 
> > > builtins and use __builtin_nontemporal_store instead 
> > > (http://reviews.llvm.org/D12313)?
> >
> >
> > I wanted to suggest that too, but I think you'd have problems with the 
> > (natural?) alignment requirement of __builtin_nontemporal_store (whereas 
> > IIRC, movnti & friends accept unaligned pointers).
>
>
> But now that I look at this again, I suppose we could have some 
> __attribute__((aligned(1))), or something like r271214.


True, luckily that only affects _mm_stream_si32 and _mm_stream_si64 - the 
'real' vector movnt stores all require type alignment. The _mm_stream_load_* 
(movntdqa) loads cases should be trivial as well.


http://reviews.llvm.org/D20358



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