https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121535
--- Comment #3 from Frank Scheiner <frank.scheiner at web dot de> --- (In reply to Andrew Pinski from comment #2) > IA64 target is the only one which uses BImode for predicates and > zero_call_used_regs is not ready to support BImode. Why does `# if __has_attribute (zero_call_used_regs)` succeed then for ia64?