[Bug middle-end/120434] GCC uses signed extend (movsxd) for known positive variables rather than zero extend 'mov'

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120434
Bug 120434 depends on bug 120629, which changed state.

Bug 120629 Summary: [16 regression] profiledbootstrap with lto fails
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120629

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