[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
Bug 77485 depends on bug 33562, which changed state.

Bug 33562 Summary: [6 Regression] aggregate DSE disabled
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33562

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