Commit Graph

1 Commits

Author SHA1 Message Date
Adam Nemet feafcd9688 [GVN] When merging blocks update LoopInfo if it's available
If LoopInfo is available during GVN, BasicAA will use it.  However
MergeBlockIntoPredecessor does not update LI as it merges blocks.

This didn't use to cause problems because LI was freed before
GVN/BasicAA.  Now with OptimizationRemarkEmitter, the lifetime of LI is
extended so LI needs to be kept up-to-date during GVN.

Differential Revision: https://reviews.llvm.org/D27288

llvm-svn: 288307
2016-12-01 03:56:43 +00:00