[PATCH] D45637: [DebugInfo] Ignore DBG_VALUE instructions in PostRA Machine Sink

[Paul Robinson via Phabricator via llvm-commits]

probinson added a comment.

Moving DBG_VALUE instructions along with the instructions that define the associated values is the right thing to do.

So the change is, uses by debug instructions no longer affect the decision to move the COPY, and (now that they don't prevent the sink) move said debug instructions along with the COPY.
That all sounds good.  I don't doubt there are more places where this needs to happen, but it seems like it can only help here.


https://reviews.llvm.org/D45637