[Bug tree-optimization/46723] [4.5/4.6 Regression] internal compiler error: in get_initial_def_for_induction, at tree-vect-loop.c:2431

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46723

--- Comment #7 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-12-01 15:37:09 UTC ---
Created attachment 22587
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22587
patch

Patch I'm testing.  Computes the induction PHI in the type of the evolution,
stripping conversions (sign-changing only for now) and re-applying them at
uses (by inserting another assignment that does the conversion in place for
the vectorized stmt).