https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103393
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> --- In particular MOVE_RATIO only looks applicable if the target (or RTL expansion?) would split the bigger GIMPLE move into pieces honoring MOVE_MAX. Though technically even MOVE_MAX only guarantees: "The maximum number of bytes that a single instruction can move _QUICKLY_ between memory and registers or between two memory locations." (emphasis mine)
