[Bug tree-optimization/51988] value_replacement in PHIOPT should handle even the cases where there are other PHIs even with non equal value

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51988

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-01-25 
00:04:01 UTC ---
Note this is like http://gcc.gnu.org/ml/gcc-patches/2012-01/msg01195.html but
different as we should do this even if the arguments for the other PHIs are non
equal.