[llvm] [RegisterCoalescer] The COPY with the implicit-def of super register is not coalescable. (PR #169997)

[via llvm-commits]

dianqk wrote:

> > There is nothing to do, actually, as #168353 hasn't been relanded yet.
> 
> I don't believe we're planning to reland #168353, we're looking to solve this with a different approach for AArch64.

Will that be extended to other targets? Or shouldn't that approach be general?

https://github.com/llvm/llvm-project/pull/169997