[Bug tree-optimization/80520] [8/9/10 Regression] Performance regression from missing if-conversion

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80520
Bug 80520 depends on bug 80491, which changed state.

Bug 80491 Summary: [7 Regression] Compiler regression for long-add case.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80491

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