The aarch64 instruction set has a madd instruction that performs integer multiply-adds. Cortex A725 and older Arm cores had dedicated integer multi-cycle pipes that could handle madd along with other complex integer instructions. Cortex X925 instead breaks madd into two micro-ops, and handles it with any of its four multiply-capable integer pipes. Likely, Arm wanted to increase throughput for that instruction without the cost of implementing three register file read ports for each multiply-capable pipe. Curiously, Arm’s optimization guide refers to the fourth scheduler’s pipes as “single/multi-cycle” pipes. “Multi-cycle” is now a misnomer though, because the core’s “single-cycle” integer pipes can handle multiplies, which have two cycle latency. On Cortex X925, “multi-cycle” pipes distinguish themselves by handling special operations and being able to access FP/vector related registers.
Nash detailed the company's vision in an interview with GamesIndustry.biz (which, curiously, is a Ziff Davis property). "We felt that what's becoming more and more critical is that as game development becomes more diverse, more complicated, and expectations continue to rise, we feel it's important that a publisher can match the needs of each individual project," Nash said. "We are spending a considerable amount of time with anyone we are partnering with, figuring out what they need specifically."
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一只宠物狗在她和妈妈的腿间转，给屋里带来生气。