public void insertBefore(PcodeOp newop, PcodeOp follow) {
		PcodeOpAST newopast = (PcodeOpAST) newop;
		PcodeOpAST followast = (PcodeOpAST) follow;
		PcodeBlockBasic bblock = followast.getParent();
		bblock.insertBefore(followast.getBasicIter(), newopast);
		opbank.markAlive(newopast);
	}
return all PcodeOps associated with a particular instruction Address
@param addr -- Address of instruction generating PcodeOps
@return -- Iterator to PcodeOps
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/PcodeSyntaxTree.java