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  1. JDK
  2. JDK-8284050

[vectorapi] Optimize masked store for non-predicated architectures

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    Details

    • Type: Enhancement
    • Status: Closed
    • Priority: P4
    • Resolution: Rejected
    • Affects Version/s: 19
    • Fix Version/s: tbd
    • Component/s: hotspot

      Description

      Currently the vectorization of masked vector store is implemented by the masked store instruction only on architectures that support the predicate feature. For non-predicate supported architectures, the masked store can also be vectorized with "load + blend + store".
      For example, implementation for "store(v, m)" can be implemented with:
      1) v1 = load()
      2) v2 = blend(v1, v, m)
      3) store(v2)

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              Assignee:
              xgong Xiaohong Gong
              Reporter:
              xgong Xiaohong Gong
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