if-conv-crash.ll 2.0 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061
  1. ; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -enable-if-conversion
  2. target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
  3. target triple = "x86_64-apple-macosx10.8.0"
  4. define fastcc void @DD_dump() nounwind uwtable ssp {
  5. entry:
  6. br i1 undef, label %lor.lhs.false, label %if.end25
  7. lor.lhs.false: ; preds = %entry
  8. br i1 undef, label %if.end21, label %if.else
  9. if.else: ; preds = %lor.lhs.false
  10. br i1 undef, label %num_q.exit, label %while.body.i.preheader
  11. while.body.i.preheader: ; preds = %if.else
  12. br label %while.body.i
  13. while.body.i: ; preds = %if.end.i, %while.body.i.preheader
  14. switch i8 undef, label %if.end.i [
  15. i8 39, label %if.then.i
  16. i8 92, label %if.then.i
  17. ]
  18. if.then.i: ; preds = %while.body.i, %while.body.i
  19. br label %if.end.i
  20. if.end.i: ; preds = %if.then.i, %while.body.i
  21. br i1 undef, label %num_q.exit, label %while.body.i
  22. num_q.exit: ; preds = %if.end.i, %if.else
  23. unreachable
  24. if.end21: ; preds = %lor.lhs.false
  25. unreachable
  26. if.end25: ; preds = %entry
  27. ret void
  28. }
  29. ; PR15990
  30. ; We can have basic blocks with single entry PHI nodes.
  31. define void @single_entry_phi(i32* %a, i32 *%b) {
  32. entry:
  33. br label %for.cond1.preheader
  34. for.cond1.preheader:
  35. %inc10 = phi i32 [ 0, %entry ], [ %inc, %for.end ]
  36. br label %for.end
  37. for.end:
  38. %malicious.phi = phi i32 [ 0, %for.cond1.preheader ]
  39. %inc = add nsw i32 %inc10, 1
  40. %tobool = icmp eq i32 %inc, 0
  41. br i1 %tobool, label %for.cond.for.end5, label %for.cond1.preheader
  42. for.cond.for.end5:
  43. %and.lcssa = phi i32 [ %malicious.phi, %for.end ]
  44. store i32 %and.lcssa, i32* %a, align 4
  45. ret void
  46. }