On November 9, 2017 7:03:18 PM GMT+01:00, Jan Hubicka <hubi...@ucw.cz> wrote: >> > I am not sure I follow your argumentation here. flag_exceptions is >> > optimization which means that one should not test it globally. For >that >> > reason I would just change dwarf2out to simply trigger >> > dwarf2out_frame_finish if any of the compiled functions needed it >(had >> > flag_exceptions set). >> >> That's not sufficient for a partition with only EH-neutral functions. >> >> > My readon of lto-wrapper is that it will set flag_exceptions for >whole >> > compilation unit when one of compilation units were copmiled with >> > flag_exceptions. >> > >> > How that helps the neutral functions? >> >> flag_exceptions is never set in a partition with only EH-neutral >functions. > >Hmm, I am still not following. By EH-neutral you mean function compiled >with -fno-exceptions so it has no unwind info at all or one that has >unwind >info but does not do anything with EH?
The latter. We choose a 'neutral' EH personality for those and thus if all behave that way we fail to init EH. I suppose we could record a TU wide setting of options attached to the TRANSLATION_UNIT_DECL and read global flags from that? Richard. >Honza >> >> -- >> Eric Botcazou
