public Value newOperation(final AbstractInsnNode insn) {
		int size;
		switch (insn.getOpcode()) {
		case LCONST_0:
		case LCONST_1:
		case DCONST_0:
		case DCONST_1:
			size = 2;
			break;
		case LDC:
			Object cst = ((LdcInsnNode) insn).cst;
			size = cst instanceof Long || cst instanceof Double ? 2 : 1;
			break;
		case GETSTATIC:
			size = Type.getType(((FieldInsnNode) insn).desc).getSize();
			break;
		default:
			size = 1;
		}
		return new SourceValue(size, insn);
	}