Add a test for the fix in revision 91009.
; RUN: opt < %s -licm -disable-output
define void @foo (i8* %v)
{
  entry:
    br i1 undef, label %preheader, label %return
     
  preheader:
    br i1 undef, label %loop, label %return
    
  loop:
    indirectbr i8* undef, [label %preheader, label %stuff]
    
  stuff:
    %0 = load i8* undef, align 1
    br label %loop
    
  return:
    ret void

}