@Override
	public int getInstructionLength(EndInstructionValue iv) {
		return 0;
	}
I suppose we could instead throw NeedsBackfillException(INST_NEXT) here, too, but this
serves as a sanity check on the SLEIGH spec. I can't think of a good reason to try to
solve INST_NEXT == const.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/plugin/assembler/sleigh/expr/EndInstructionValueSolver.java