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  1. JDK
  2. JDK-8269878

Handle redundant reg-2-reg moves in X86 backend

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Details

    • Enhancement
    • Status: Resolved
    • P4
    • Resolution: Fixed
    • 17, 18
    • 18
    • hotspot
    • b06
    • x86

    Description

      - Following instruction patterns emit extra redundant register to register moves.
          MoveF2VL
          MoveF2LEG
          MoveVL2F
          MoveLEG2F
          MoveD2VL
          MoveD2LEG
          MoveVL2D
          MoveLEG2D
      - Register allocator is capable of constraining the register mask of DEF operand based on the register mask back propagated from USE operand.

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              jbhateja Jatin Bhateja
              jbhateja Jatin Bhateja
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                Updated:
                Resolved: