[Bug tree-optimization/15738] [tree-ssa] Convert strrchr(s, c) to strchr(s, c) if c is known to be 0

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |3.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15738