[PATCH] D24833: [LoopDataPrefetch/AArch64] Allow selective prefetching of symbolic strided accesses

[Balaram Makam via llvm-commits]

bmakam added a comment.

In https://reviews.llvm.org/D24833#549827, @anemet wrote:

> > Irregular streams typically consist of array accesses in which a subscripted variable
>
> >  appears in one of the subscript positions, such as: A[B[i]].
>
> > 
>
> > For example:
>
> > 
>
> >   for (unsigned i = 0; i < 100; i++)
>
> >     A[i + 1] = A[Stride * i] + B[i];
>
>
> There is something confusing here.  Is Stride loop-variant here?  Otherwise I don't see how this is a A[B[i]]-style access.


Sorry for the confusion. What I meant was address of B[i] can be represented as i*sizeof(B), so sizeof(B) is the loop-invariant stride here.


https://reviews.llvm.org/D24833