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      1 ; PR32278
      2 
      3 ; RUN: llc -mtriple=x86_64-unknown < %s
      4 
      5 define i8 @foo_v4i1_0_0_1_1_2_2_3_3(i8 %in) {
      6   %trunc = trunc i8 %in to i4
      7   %mask = bitcast i4 %trunc to <4 x i1>
      8   %s = shufflevector <4 x i1> %mask, <4 x i1> undef, <8 x i32> <i32 0, i32 0, i32 1, i32 1, i32 2, i32 2, i32 3, i32 3>
      9   %b = bitcast <8 x i1> %s to i8
     10   ret i8 %b
     11 }
     12