https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100799
--- Comment #31 from Peter Bergner <bergner at gcc dot gnu.org> --- (In reply to Jakub Jelinek from comment #30) > Either tree parmdef = ssa_default_def (cfun, parm) is NULL, or has_zero_uses > (parmdef). > Not sure if has_zero_uses will work properly after some bbs are converted > from GIMPLE to RTL, but maybe it will, I think the expansion generally > doesn't gsi_remove statements it expands nor calls update_stmt on them. One > could always also just compute in generic code at the start of expansion the > number of unused DECL_HIDDEN_STRING_LENGTH PARM_DECLs at the end of the > argument list, save that as a flag in struct function or where and let the > backends use it from there. Ok, I think that gives us some idea what needs to be done. I'll look for someone in the team to have a look at implementing this workaround. Thanks.
