MOPs from the frontend go through register renaming and have various bookkeeping resources allocated for them, letting the backend carry out out-of-order execution while ensuring results are consistent with in-order execution. While allocating resources, the core can carry out various optimizations to expose additional parallelism. X925 can do move elimination like prior Arm cores, and has special handling for moving an immediate value of zero into a register. Like on A725, the move elimination mechanism tends to fail if there are enough register-to-register MOVs close by. Neither optimization can be carried out at full renamer width, though that’s typical as cores get very wide.
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SEDIC, CG engineer
苹果似乎提前在官网监管信息页面中泄露了其传闻已久的全新低价 MacBook 产品名称——“MacBook Neo”。这款机型预计将于本周三正式发布。