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Memory dependencies can’t be definitively determined until address translation finishes. Some cores do an early check before address translation completes, using bits of the address that represent an offset into a page. Cortex X925 might be doing that because it takes a barely measurable penalty when loads and stores appear to overlap in the low 12 bits.
Unlike A725, X925 does not have special handling for PTRUE, which sets a SVE predicate register to enable all lanes. A725 could eliminate PTRUE like a zeroing idiom, and process it without allocating a physical register. While this is a minor detail, it does show divergence between Arm’s mid-core and big-core lines.