[Bug tree-optimization/89509] restrict doesnt work with subfield accesses

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89509
Bug 89509 depends on bug 89505, which changed state.

Bug 89505 Summary: [7 Regression] LibreOffice miscompilation starting with 
r260383
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89505

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