DEFINED_YIELD    3514 compile.c      	ADD_INSN3(ret, nd_line(node), defined, INT2FIX(DEFINED_YIELD), 0,
DEFINED_YIELD    2608 vm_insnhelper.c       case DEFINED_YIELD:
DEFINED_YIELD    2610 vm_insnhelper.c 	    expr_type = DEFINED_YIELD;