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  1. JDK
  2. JDK-8207169

X86: Modularize cmpxchg-oop assembler for C1 and C2

    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P4
    • Resolution: Withdrawn
    • Affects Version/s: 11, 12
    • Fix Version/s: tbd_major
    • Component/s: hotspot
    • Labels:
      None
    • Subcomponent:
      gc
    • CPU:
      x86
    • OS:
      generic

      Description

      Currently, cmpxchg-oop is generated a single instructions plus probably some oops-compression. Shenandoah GC (and most likely other concurrent compacting GCs) needs to generate some more code to deal with possible false-negatives when comparing old-value with the field contents.

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            • Assignee:
              rkennke Roman Kennke
              Reporter:
              rkennke Roman Kennke
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              Dates

              • Created:
                Updated:
                Resolved: