[flang] [llvm] [mlir] [flang][OpenMP] Enable tiling (PR #143715)

[Jan Leyonberg via llvm-commits]

jsjodin wrote:

> > > This is the next step that @Meinersbur is working on, but we wanted to make tiling available sooner.
> > 
> > 
> > Are you against a deadline for the tiling support? @Meinersbur's patch is already up for review and looked high quality to me. I don't think it is that far away from being approved. Maybe the tiling support should be based upon that patch.
> 
> Yes, there is a bit of a deadline, however @Meinersbur 's patch is close to being approved it is probably best to get that in first, and then rework this patch. My concern is that this patch will cause merge issues that would delay the more permanent solution, which is not ideal.

Looking at the other patch, the overlap is actually not that big since it focuses on stand-alone unrolling only, so I think the order is not that critical.

https://github.com/llvm/llvm-project/pull/143715