public FieldForUserop requestFieldForUserop(PcodeUseropDefinition<?> userop) {
		return fieldsForUserop.computeIfAbsent(userop.getName(), n -> {
			FieldForUserop f = new FieldForUserop(userop);
			f.generateInitCode(this, cv, initMv);
			return f;
		});
	}
Request a field for the given userop

@param userop the userop
@return the field request
Ghidra/Framework/Emulation/src/main/java/ghidra/pcode/emu/jit/gen/JitCodeGenerator.java