AArch64: Optimize out WHILELO with PTRUE

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    • Type: Enhancement
    • Resolution: Fixed
    • Priority: P4
    • 19
    • Affects Version/s: 19
    • Component/s: hotspot
    • b16
    • aarch64
    • generic

      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

            Assignee:
            Eric Liu
            Reporter:
            Eric Liu
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              Created:
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