https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109009
--- Comment #10 from Peter Bergner <bergner at gcc dot gnu.org> --- (In reply to Peter Bergner from comment #9) > Yes, you'll need to factor in the BB frequency. Since the save/restore code > will go into (at this point modulo shrink-wrapping later) the prologue and > epilogue, you'll want something like: <prologue/epilogue freq> * 2 * > "ira_memory_move_cost". Thinking more, depending on the allocno/mode, you might also need to factor in calculate_saved_nregs(), in case the allocno represents a register pair or larger.
