[Bug tree-optimization/52686] SLP crashes with WIDEN_LSHIFT_EXPR

[uweigand at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52686

Ulrich Weigand <uweigand at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2012-03-23
     Ever Confirmed|0                           |1

--- Comment #1 from Ulrich Weigand <uweigand at gcc dot gnu.org> 2012-03-23 15:38:43 UTC ---
It seems the root cause of all the memory problems is that
vect_get_smallest_scalar_type neglects to handle WIDEN_LSHIFT_EXPR, which
causes the SLP pass to mis-compute the number of statements needed to vectorize
the expression.