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  1. JDK
  2. JDK-8226370

[vector] Vector API lanes shift operations lack of AArch64 back-end NEON support

    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P4
    • Resolution: Won't Fix
    • Affects Version/s: repo-panama
    • Fix Version/s: repo-panama
    • Component/s: hotspot
    • Subcomponent:
    • CPU:
      aarch64
    • OS:
      generic

      Description

      The following APIs are new added and lack of AArch64 back-end NEON support.

      rotateLanesLeft(int i)
      rotateLanesRight(int i)
      shiftLanesLeft(int i)
      shiftLanesRight(int i)

      TODO:

      1.

      Take rotateLanesRight as an example, it is implemented as follows:

              VectorShuffle<Integer> PermMask = VectorShuffle.shuffleIota(SPECIES, j);
              return this.rearrange(PermMask);

      NEON implementations of rearrange and shuffleIota need to be added.

      2. Test cases and benchmark also need to be added.

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            • Assignee:
              yzhang Yang Zhang
              Reporter:
              yzhang Yang Zhang
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              • Created:
                Updated:
                Resolved: