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      1 ; RUN: opt < %s -analyze -iv-users
      2 ; PR9633: Tests that SCEV handles the mul.i2 recurrence being folded to
      3 ; constant zero.
      4 
      5 define signext i8 @func_14(i8 signext %p_18) nounwind readnone ssp {
      6 entry:
      7   br label %for.inc
      8 
      9 for.inc:
     10   %p_17.addr.012 = phi i32 [ 0, %entry ], [ %add, %for.inc ]
     11   %add = add nsw i32 %p_17.addr.012, 1
     12   br i1 false, label %for.inc, label %for.cond
     13 
     14 for.cond:
     15   %tobool.i = icmp ult i32 %add, 8192
     16   %shl.i = select i1 %tobool.i, i32 13, i32 0
     17   %shl.left.i = shl i32 %add, %shl.i
     18   %conv.i4 = trunc i32 %shl.left.i to i8
     19   br i1 undef, label %for.inc9, label %if.then
     20 
     21 for.inc9:
     22   %p_18.addr.011 = phi i8 [ %add12, %for.inc9 ], [ %p_18, %for.cond ]
     23   %add12 = add i8 %p_18.addr.011, 1
     24   %mul.i2 = mul i8 %add12, %conv.i4
     25   %mul.i2.lobit = lshr i8 %mul.i2, 7
     26   %lor.ext.shr.i = select i1 undef, i8 %mul.i2.lobit, i8 %mul.i2
     27   %tobool = icmp eq i8 %lor.ext.shr.i, 0
     28   br i1 %tobool, label %for.inc9, label %if.then
     29 
     30 if.then:
     31   ret i8 0
     32 
     33 }