2010-12-26-PHIInfiniteLoop.ll 1.6 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243
  1. ; RUN: opt < %s -loop-simplify -S
  2. ; PR8702
  3. 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"
  4. target triple = "x86_64-unknown-freebsd9.0"
  5. declare void @foo(i32 %x)
  6. define fastcc void @inm_merge() nounwind {
  7. entry:
  8. br label %for.cond
  9. for.cond: ; preds = %while.cond36.i, %entry
  10. br i1 undef, label %do.body, label %for.body
  11. for.body: ; preds = %for.cond
  12. br i1 undef, label %while.cond36.i, label %if.end44
  13. if.end44: ; preds = %for.body
  14. %call49 = call fastcc i32 @inm_get_source()
  15. br i1 undef, label %if.end54, label %for.cond64
  16. if.end54: ; preds = %if.end44
  17. br label %while.cond36.i
  18. while.cond36.i: ; preds = %if.end54, %for.body
  19. br label %for.cond
  20. for.cond64: ; preds = %if.end88, %for.cond64, %if.end44
  21. %error.161 = phi i32 [ %error.161, %for.cond64 ], [ %error.161, %if.end88 ], [ %call49, %if.end44 ]
  22. call void @foo(i32 %error.161)
  23. br i1 undef, label %for.cond64, label %if.end88
  24. if.end88: ; preds = %for.cond64
  25. br i1 undef, label %for.cond64, label %if.end98
  26. if.end98: ; preds = %if.end88
  27. unreachable
  28. do.body: ; preds = %for.cond
  29. unreachable
  30. }
  31. declare fastcc i32 @inm_get_source() nounwind