The Dutch love four-day working weeks, but are they sustainable?
Because results with NOPs were inconclusive, I tried testing with combinations of various instructions designed to dodge other resource limits. Mixing instructions that write to the integer and floating point registers showed X925 could have a maximum of 448 renamed registers allocated across its register files. Recognized zeroing idioms like MOV r,0 do not allocate an integer register, but also run up against the 448 instruction limit. I tried mixing in predicate register writes, but those also share the 448 instruction limit. Adding in stores showed the core could have slightly more than 525 instructions in flight. Adding in not-taken branches did not increase reordering capacity further. Putting an exact number on X925’s reorder buffer capacity is therefore difficult, but it’s safe to say there’s a practical limitation of around 525 instructions in flight. That puts it in the same neighborhood as Intel’s Lion Cove (576) and ahead of AMD’s Zen 5 (448).
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《年鉴》指出,在全球政策转向务实、平衡的背景下,中国正通过完善披露准则与强化监管,推动企业从单纯的“贴标签”转向实质性的价值创造。文中系统梳理了金融、能源、医药及房地产等重点行业的典型负面案例,揭示了财务造假、安全事故和环境违规等核心痛点。
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南方周末研究员 黄雨婕 南方周末实习生 袁清渠