[Bug tree-optimization/77485] Missed dead store elimination of aggregate store followed by partial stores

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77485

--- Comment #9 from Jeffrey A. Law <law at redhat dot com> ---
That ought to be significantly easier and cleaner.  I really didn't like the
transformation into memset.  I'll give that a whirl tomorrow.