[Bug tree-optimization/116938] move_stmt in phiopt should use rewrite_to_defined_overflow

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116938
Bug 116938 depends on bug 111276, which changed state.

Bug 111276 Summary: rewrite_to_defined_overflow rewrites already defined code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111276

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