[Bug ipa/64963] [5 Regression] IPA Cloning/Splitting does not copy function section attributes resulting in kernel miscompilation

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64963

--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 34779
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34779&action=edit
gcc5-pr64963.patch

Updated untested patch (well, tested with dg.exp=ipa/* ipa.exp so far), whcih
doesn't introduce these regressions and I think roughly matches what we used to
do with DECL_SECTION_NAME in the past.
Another thing is DECL_COMDAT_GROUP, seems we used to copy that and only clear
in some cases (non-local ones).