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4977e92629
Summary: This patch made two improvements to NaryReassociate and the NVPTX pipeline 1. Run EarlyCSE/GVN after NaryReassociate to get rid of redundant common expressions. 2. When adding an instruction to SeenExprs, maps both the SCEV before and after reassociation to that instruction. Test Plan: updated @reassociate_gep_nsw in nary-gep.ll Reviewers: meheff, broune Reviewed By: broune Subscribers: dberlin, jholewinski, llvm-commits Differential Revision: http://reviews.llvm.org/D9947 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238396 91177308-0d34-0410-b5e6-96231b3b80d8
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