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  1. JDK
  2. JDK-8285282

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

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    • Enhancement
    • Resolution: Duplicate
    • P4
    • tbd
    • tbd
    • hotspot

    Description

      - 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.

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              jbhateja Jatin Bhateja
              jbhateja Jatin Bhateja
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