[Bug tree-optimization/15241] [tree-ssa] Convert a <= 7 && b <= 7 into (a | b) <= 7.

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15241

Bug 15241 depends on bug 15357, which changed state.

Bug 15357 Summary: [tree-ssa] combing if statements
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15357

           What    |Removed                     |Added
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             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED