[PATCH] D54050: RegisterCoalescer: Report impossible for erasable implicit defs

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

I have another case that fails from the same fundamental problem of reporting OK for one side, and then aborting on the range check on the other side, so this might not be the right place to put this check


https://reviews.llvm.org/D54050