[Bug tree-optimization/68640] foo restrict propagated to foo._omp_fn.0

[joseph at codesourcery dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68640

--- Comment #5 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
The definition of restrict allows for new temporaries.  If you do "q = p + 
1;", then thereafter q is based on p.  (If you do assignments between 
restricted pointer objects, you also need to follow the rules for those.)