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* Fix edge condition in DAGCombiner to improve codegen of shift sequences.Andrea Di Biagio2013-10-171-0/+8
* Remove superfluous comment accidentally checked-in.Andrea Di Biagio2013-09-271-2/+0
* Re-apply the change from r191393 with fix for pr17380.Andrea Di Biagio2013-09-271-0/+203
* Revert r191393 since it caused pr17380.Andrea Di Biagio2013-09-261-181/+0
* Teach DAGCombiner how to canonicalize dags according to the ruleAndrea Di Biagio2013-09-251-0/+181