On Wed, Dec 13, 2023 at 1:08 PM Andrew Pinski <pins...@gmail.com> wrote: > > On Wed, Dec 13, 2023 at 6:19 AM Florian Weimer via Gcc <gcc@gcc.gnu.org> > wrote: > > > > I feel like I have asked this before. Currently, GCC uses calls to > > __tls_get_addr to obtain the address of global-dynamic TLS variables. > > On other architectures with support for GNU2 TLS descriptors, those are > > used by default. > > > > Should we flip the default to GNU2 descriptors? Support has been > > available in glibc for a long, long time. Is there any other reason for > > not doing this? On the glibc side, the behavior regarding lazy > > initialization and symbol binding does not change whether the old or new > > interface is used. > > Just FYI, the last time this was asked was 6 years ago but maybe > things has changed since: > https://inbox.sourceware.org/gcc-patches/came9rop_68qpdlz25poha1ewb6pgquvv_+h5bxgfhu05mh9...@mail.gmail.com/
Oh I noticed that was a bug filed before that asking for testcases to be added for it on x86_64 but it looks like it was not implemented: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48868 So it might even be broken. Thanks, Andrew > > Thanks, > Andrew > > > > > Thanks, > > Florian > >
