http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45172

--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-11-15 
13:18:50 UTC ---
We indeed have before ehcleanup:

  # BLOCK 26
  # PRED: 24 (false,exec) 25 (true,exec)
  dbcsr_checksum (&product_matrix, &error);
  # SUCC: 31 (eh,exec) 27 (fallthru,exec)

  # BLOCK 27
  # PRED: 26 (fallthru,exec) 31 (fallthru,exec)
  # finally_tmp.15_17 = PHI <1(26), 0(31)>
  # all_sizes$data_322 = PHI <D.1562_274(26), all_sizes$data_320(31)>

...

  # BLOCK 31
  # PRED: 21 (eh,exec) 23 (eh,exec) 26 (eh,exec)
  # all_sizes$data_320 = PHI <all_sizes$data_318(21), all_sizes$data_318(23),
D.1562_274(26)>
<L71>:
  goto <bb 27>;
  # SUCC: 27 (fallthru,exec)

and we thread that jump leading to the duplicate edge (which verify_flow_info
isn't happy about).  Maybe that's the only thing to fix.

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