1; RUN: opt < %s -instcombine -S | grep lshr
2; 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 %B
8}
9
10