On Tue, Jul 5, 2022 at 1:17 PM Daan De Meyer via devel <devel@lists.fedoraproject.org> wrote: > > The proposed configuration is to add "-fno-omit-frame-pointer > -mno-omit-leaf-frame-pointer" to the default compilation flags. Are you > alluding to inline assembly that won't have frame pointers set up correctly > even with these two options enabled?
No - I think the problem is that adding those flags to the default build configuration will affect the whole system - all executables and shared libraries, not only "leaf" binaries. And that makes your benchmarks (and those run by phoronix) basically useless for what we're discussing here, because they only measure performance impact when compiling the executables but not *the whole world* with those flags, including all shared libraries that are used by executables you're benchmarking. So applying this change globally would, I assume, add to (or even multiply) the negative effect wrt/ performance, so the effect will likely be (much?) bigger than the few percent that were mentioned in this thread? Fabio _______________________________________________ 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 Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
