[Bug tree-optimization/68963] [4.9/5 Regression] O3 vs. O2 discards part of loop and terminates early

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68963
Bug 68963 depends on bug 70177, which changed state.

Bug 70177 Summary: [6 Regression] ICE in extract_ops_from_tree starting with 
r233660
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70177

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