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423476d899
Summary: After we rewrite a candidate, the instructions used by the old form may become unused. This patch cleans up these unused instructions so that we needn't run DCE after SLSR. Test Plan: removed -dce in all the SLSR tests Reviewers: broune, meheff Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D9101 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235410 91177308-0d34-0410-b5e6-96231b3b80d8