File: 2006-11-10-ashr-miscompile.ll

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llvm-toolchain-4.0 1%3A4.0.1-10~deb9u2
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; RUN: opt < %s -instcombine -S | grep lshr
; Verify this is not turned into -1.

define i32 @test(i8 %amt) {
        %shift.upgrd.1 = zext i8 %amt to i32            ; <i32> [#uses=1]
        %B = lshr i32 -1, %shift.upgrd.1                ; <i32> [#uses=1]
        ret i32 %B
}