[PATCH] D22025: AMDGPU/SI: Do not insert EndCf in an unreachable block

[Changpeng Fang via llvm-commits]

cfang added a comment.

I think the key is the FirstInsertionPt in the BB is a Unreachable. This should essentially guarantee no other instructions before this Unreachable (PHI, Landing Pad?).
I think we are safe here not to insert the end cf. And we may need come informative comments here.


http://reviews.llvm.org/D22025