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