[Bug tree-optimization/59249] Jump threading makes if-conversion and following vectorization impossible.

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59249

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-11-22
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Btw, the issue is that we only have critical predecessors for inserting code
on.
The fix is to re-organize if-conversion to either split a random edge when
that happens or to re-organize it to compute edge predicates rather than
basic-block predicates.