It was.Cromwell is far closer to being justifiably called a genocide than the famine. For a kick off the famine by its very nature was caused by a random crop disease. Secondly, when it began, the PM (Peel) bought £100,000 of corn from the US to send to Ireland. A pretty odd move for a government trying to wipe a people out. The Queen herself gave money to the famine, and although the bulk of the government did not give a fuck about the suffering and deaths, they ended up rescinding the corn laws. When Peel went it got worse and for sure they let people die, but the country took in thousands upon thousands of Irish migrants. Liverpool's demographics changed immeasurably, they became hugely Irish because Irish refugees/migrants (whatever term you want) were not turned away, but were allowed to settle.
To call that a genocide is simply false. It would be like Hitler taking in Jews fleeing Poland into Germany and allowing them to settle. The famine started in 1845. By 1847, the British government was spending money on relief efforts with soup kitchens in Ireland, but of course also did tons to make it worse by working on the notion that the Irish should be responsible for themselves and by allowing land owners from England to fuck the poor and starving out of their homes.
It was disgraceful, but an attempt at genocide? No chance at all. You do not have the Royal Family and the two successive governments spend money on relief efforts (however inadequate) and also take in thousands of refugees fleeing the danger if you are trying to wipe a people out.
A few token gestures done absolutely nothing to offset their very deliberate efforts to exacerbate the conditions, as per Matty's response.
Now, wether you think that constitutes an attempt at genocide is up to you but to me it undoubtedly was.