[PATCH] D29850: [AArch64] Fix bug in AArch64RedundantCopyElimination removing COPYs it shouldn't.

[Tim Northover via Phabricator via llvm-commits]

t.p.northover added a comment.

Where do copies like that come from? It seems like a pretty sketchy target-specific extension to a shared instruction, and we should probably be representing that in some better way.


https://reviews.llvm.org/D29850