https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97119
--- Comment #7 from Jan Hubicka <hubicka at gcc dot gnu.org> --- Local aliases are created by ipa-visibility pass. Most common case is that function is declared inline but ELF superposition rules say that the symbol can be overwritten by a different library. Since GCC knows that all implementaitons must be equivalent, it can force calls within DSO to be direct. I am not quite sure how this confuses stack unwinding on Solaris? For live patching, if you want to patch inline function, one definitely needs to look for places it has been inlined to. However in the situation the function got offlined, I think live patching should just work, since it will place jump in the beggining of function body. The logic for creating local aliases is in ipa-visibility.cc. Adding command line option to control it is not hard. There are other transformations we do there - like breaking up comdat groups and other things. part aliases are controlled by -fno-partial-inlining, isra by -fno-ipa-sra. There is also ipa-cp controlled by -fno-ipa-prop. We also do alises as part of openMP offlining and LTO partitioning that are kind of mandatory (there is no way to produce correct code without them).
