https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84945
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Jakub Jelinek from comment #2) > Created attachment 43696 [details] > gcc8-pr84945.patch > > Untested fix. > I think this ought to work well on x86_64/i?86-linux, but I'm afraid is > going to be an ABI change otherwise, because __cpu_model exported out of > libgcc will change in that case size and objects referencing it might have > copy relocations against it. > > Another possibility is not to add the extra features into > __cpu_model.__cpu_features, but add a new variable (say __cpu_features2), > and make sure to not add this variable at all into libgcc_s.so.1 (i.e. force > it to be libgcc.a only), then __builtin_cpu_supports for these new features > would always link in the libgcc.a(cpuinfo.o). I like this approach better.
