[PATCH] D23549: [SROA] Preserve llvm.mem.parallel_loop_access metadata

[Dorit Nuzman via llvm-commits]

dorit added a comment.

In https://reviews.llvm.org/D23549#527278, @chandlerc wrote:

>


...

> I can absolutely believe we're dropping metadata when we rewrite stuff but fail to promote it to registers. I think the rewriting logic here never got the most careful of analysis because we "usually" think of it as rewriting in preparation for promotion, but we definitely have lots of rewrites at this point that don't involve in promotion so we should probably systematically go through this.


Agreed... Is it ok though to commit this patch, as a tiny step towards that (which allows the mem.parallel tags reach the vectorizer) ?


https://reviews.llvm.org/D23549