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      1 ; RUN: llc < %s -march=x86 -disable-cgp-branch-opts | grep movzbl
      2 ; PR3366
      3 
      4 define void @_ada_c34002a() nounwind {
      5 entry:
      6   %0 = load i8* null, align 1
      7   %1 = sdiv i8 90, %0
      8   %2 = icmp ne i8 %1, 3
      9   %3 = zext i1 %2 to i8
     10   %toBool449 = icmp ne i8 %3, 0
     11   %4 = or i1 false, %toBool449
     12   %5 = zext i1 %4 to i8
     13   %toBool450 = icmp ne i8 %5, 0
     14   br i1 %toBool450, label %bb451, label %bb457
     15 
     16 bb451:
     17   br label %bb457
     18 
     19 bb457:
     20   unreachable
     21 }
     22