#define OP_SYMBOL(op) op->operand.symOperand
#define OP_SYM_TYPE(op) op->operand.symOperand->type
#define OP_SYM_ETYPE(op) op->operand.symOperand->etype
+#define OP_VALUE(op) op->operand.valOperand
#define SPIL_LOC(op) op->operand.symOperand->usl.spillLoc
#define OP_LIVEFROM(op) op->operand.symOperand->liveFrom
#define OP_LIVETO(op) op->operand.symOperand->liveTo