https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78642
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> --- So in what other insn does the clobber appear and which pass introduced it? Easiest is to b error run then notice the address passed to verify_rtx_sharing and put a breakpoint on verify_rtx_sharing conditional on orig == $<whatever> (of course only in the same verify_rtl_sharing call).
