@Override
	public int compareTo(SequenceNumber sq) {
		int val = pc.compareTo(sq.pc);
		if (val != 0) {
			return val;
		}
		if (uniq < sq.uniq) {
			return -1;
		}
		if (sq.uniq < uniq) {
			return 1;
		}
		return 0;
	}
Set relative position information of PcodeOps within
a basic block, may change as basic block is edited.

@param o relative position of pcodeOp within a basic block
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/SequenceNumber.java