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  1. JDK
  2. JDK-6532536

Optimize arraycopy stubs for Intel cpus

    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P3
    • Resolution: Fixed
    • Affects Version/s: 7
    • Fix Version/s: hs14
    • Component/s: hotspot
    • Labels:
    • Subcomponent:
    • Resolved In Build:
      b06
    • CPU:
      x86
    • OS:
      solaris_10

      Backports

        Description

        Intel cpus very sensitive to data moves alignment.
        Arraycopy stubs have to be fixed to avoid such misalignment
        for these hardware.
        SSE2 movdqu nstruction performance was greatly improved on newest Intel's cpus.

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                • Assignee:
                  kvn Vladimir Kozlov
                  Reporter:
                  kvn Vladimir Kozlov
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