[Bug ipa/98265] [10/11 Regression] gcc-10 has significantly worse code generated with -O2 compared to -O1 (or gcc-9 -O2) when using the Eigen C++ library

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98265

--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 49947
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49947&action=edit
Reduced test-case

I reduced a test-case where GCC 10 does not inline all in fn called
'should_inline'.