[Bug lto/82229] GCC7's LTO underperforms compared to GCC6

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82229

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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             Status|REOPENED                    |WAITING

--- Comment #21 from Martin Liška <marxin at gcc dot gnu.org> ---
Ok, so you can use compiler hints line attribute always_inline or inline.
Apart from that you can use PGO (-fprofile-generate/-fprofile-use) to provide
even more hints.

For the analysis, please attach perf report log files for slow and fast
version. That should help us.