[Bug ipa/98265] [10 Regression] gcc-10 has significantly worse code generated with -O2 compared to -O1 (or gcc-9 -O2) when using the Eigen C++ library

[schwab--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98265
Bug 98265 depends on bug 99989, which changed state.

Bug 99989 Summary: [11 regression] -Wmaybe-uninitialized warning breaks 
bootstrap on riscv64
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99989

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