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1; RUN: opt < %s -passes=instcombine -S | grep lshr2; Verify this is not turned into -1.3 4define i32 @test(i8 %amt) {5        %shift.upgrd.1 = zext i8 %amt to i32            ; <i32> [#uses=1]6        %B = lshr i32 -1, %shift.upgrd.1                ; <i32> [#uses=1]7        ret i32 %B8}9 10