[Bug tree-optimization/82991] memcpy and strcpy return value can be assumed to be equal to first argument

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82991
Bug 82991 depends on bug 67797, which changed state.

Bug 67797 Summary: builtin functions should be able to know when their first 
argument is returned for tail calls
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67797

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