[PATCH] D33587: [DAGCombine] Do several rounds of combine.

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a reviewer: RKSimon.
RKSimon added a comment.

Effects on performance? How many of these cases are just where multiple nodes were created and not added to the worklist?


https://reviews.llvm.org/D33587