[Bug tree-optimization/49749] Reassociation rank algorithm does not include all non-NULL operands

[wschmidt at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49749

--- Comment #7 from William J. Schmidt <wschmidt at gcc dot gnu.org> 2011-07-15 
20:19:21 UTC ---
Our experiments didn't distinguish between loop-carried PHIs and other join
points, so that might be another avenue of attack.