Shares of the computer and printer company rallied on optimism for AI PCs and cost cuts.Shares of HP (HPQ 2.42%) were rallying in Thursday trading, up as much as 6.1% before settling into a 3.8% gain as of 1:24 p.m. ET.After Hewlett-Packard split into two companies, HP Inc. now handles the low-growth businesses of PCs and printers/ink. And the growth challenges were on display when the company released earnings last night.Still, the stock rallied today on optimism that artificial intelligence (AI) PCs will ...