[DAGCombiner] [NFC] Improve X div/rem 1 fold
[DAGCombiner] [NFC] Improve X div/rem 1 fold

Reviewers: spatel

Reviewed By: spatel

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D52661

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@343349 91177308-0d34-0410-b5e6-96231b3b80d8

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