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  1. JDK
  2. JDK-8264352

AArch64: Optimize vector "not/andNot" for NEON and SVE

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    • Enhancement
    • Resolution: Fixed
    • P4
    • 17
    • 17
    • hotspot
    • b18
    • aarch64
    • linux

    Description

      For vector "not", current pattern is: "XorV (Replicate -1) ". This can be improved with a single instruction "not".
      For vector "andNot", current pattern is "(AndV src1 (XorV src2 (ReplicateB m1)))". This can be improved with a single instruction "bic".

      These optimizations can be supported by adding match rules for Arm NEON and SVE.

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              xgong Xiaohong Gong
              xgong Xiaohong Gong
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                Updated:
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