[Bug debug/42395] [4.5 Regression] "error: definition in block 12 does not dominate use in block 19" with -O3 -g

[jakub at gcc dot gnu dot org]

------- Comment #4 from jakub at gcc dot gnu dot org  2009-12-23 08:41 -------
While that change triggered it because at *.ifcvt it causes a difference:
 <bb 7>:
   i_41 = j_4(D);
-  # DEBUG i => NULL
+  # DEBUG i => i_9
   if (i_41 <= 4095)
     goto <bb 3>;
it doesn't to appear to be the bug, i_9 definition dominates this use.
The problem is that *.vect changes the IL in a way that it no longer dominates
it.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42395