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AArch64: Optimize out WHILELO with PTRUE

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    • b16
    • aarch64
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      PTRUE has a lower latency and higher throughput than WHILELO.

      // from Arm Neoverse N2 Software Optimization Guide
      SVE Instruction Exec Latency Execution Throughput Utilized Pipelines
      PTRUE 2 2 M
      WHILELO 3 1 M

            eliu Eric Liu
            eliu Eric Liu
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