[Bug tree-optimization/19832] don't remove an if when we know the value is the same as with the if (subtraction)

[jimis at gmx dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19832

--- Comment #2 from jimis <jimis at gmx dot net> 2011-08-13 01:37:14 UTC ---
Created attachment 24996
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24996
Make cse.c:preferable() more readable, slightly faster, without affecting its
logic.

2011-08-13  Dimitrios Apostolou  <jimis@gmx.net>

    * cse.c (preferable): Make it more readable and slightly faster,
    without affecting its logic.