[Bug lto/83967] LTO removes C functions declared as weak in assembler(depending on files order in linking)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83967

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Still not 100% sure which Handler should prevail in resolving the symbol for
Dispatch.  Currently it seems the non-weak one prevails which looks correct.

I think in both cases the resolution from GNU ld is bogus.  Take the working
one:

190 16b2980a71930688 PREEMPTED_REG Handler

that's clearly wrong -- Handler prevails!

190 801577c96f9ccef3 PREVAILING_DEF_IRONLY Handler

that's wrong because in the assembler file Handler is used to resolve the
symbol at Dispatch.

gold seems to get it correct as PREVAILING_DEF (but not _IRONLY).