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b11fff1d8a
Several combines involving icmp (shl C2, %X) C1 can be simplified without introducing any new instructions. Move them to InstSimplify; while we are at it, make them more powerful. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216642 91177308-0d34-0410-b5e6-96231b3b80d8