On Tue, Oct 06, 2020 at 04:46:24PM -0600, Jeff Law wrote: > > On 9/30/20 3:50 AM, Jan Kratochvil wrote: > > On Wed, 30 Sep 2020 01:31:29 +0200, Jeff Law wrote: > >> But the GCC community > >> doesn't really test that option and it's known to be broken with LTO. > > I haven't seen any GCC PR for -fdebug-types-section being broken with LTO. > > I'm not aware of one either. But as Jakub has previously pointed out > debug-types-section is disabled when LTO is enabled. I don't know the > details of why that is done. > > > Could you suggest what is wrong on -fdebug-types-section? > > Your best bet is to discuss with Jakub and perhaps Jason. They're far > more familiar with the debuginfo generation than I am.
It didn't used to work with LTO, but some patches have been backported so it at least is passed through now without crashing. There are however still various bugs in the implementation: Excess debug info -fdebug-types-section https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78320 -fdebug-types-section drops DW_AT_object_pointer https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94875 gcc drops top-level dies with -fdebug-types-section https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90232 Fission + type units + compression are suboptimal https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78321 Cheers, Mark _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
