Add C2 mid-end and x86 back-end implementation for bit COMPRESS_BITS and EXPAND_BITS operation

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    • Type: Enhancement
    • Resolution: Duplicate
    • Priority: P4
    • tbd
    • Affects Version/s: 19
    • Component/s: hotspot

      - Intrinsify scalar following operation
          Integer.compress
          Integer.expand
          Long.compress
          Long.expand

      - Add C2 IR nodes and corresponding ideal transformations for new operations.

      - Use X86 parallel bit extraction and deposition instruction to emit efficient JIT sequence.

            Assignee:
            Jatin Bhateja
            Reporter:
            Jatin Bhateja
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              Created:
              Updated:
              Resolved: