https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92190
--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> --- So, if the clobbers (unlike sets) are there just for -fipa-ra purposes, can't we drop the clobbers from the pattern and only add them during output (i.e. replace "vzeroupper" with C code that first modifies the pattern if flag_ipa_ra and then returns "vzeroupper"?
