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  1. JDK
  2. JDK-8365290

[perf] x86 ArrayFill intrinsic generates SPLIT_STORE for unaligned arrays

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    • x86
    • generic

      For the SRF platform the ArrayFill test reports ~2x score drop for runs with intrinsic vs generated code. For the ArraysFill.testIntFill test with size=8195 on the Xeon 6740E reported score looks as:
      no issue: 2774.537
      issue reproduced: 1302.243

      CPUs with the AVX3 support not affected while it use different intrinsic.

            vaivanov Vladimir Ivanov
            vaivanov Vladimir Ivanov
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