public ExceptionHandler requestExceptionHandler(DecodedPcodeOp op, JitBlock block) {
		return excHandlers.computeIfAbsent(op, o -> new ExceptionHandler(o, block));
	}
Request an exception handler that can retire state for a given op

@param op the op that might throw an exception
@param block the block containing the op
@return the exception handler request
Ghidra/Framework/Emulation/src/main/java/ghidra/pcode/emu/jit/gen/JitCodeGenerator.java