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  1. JDK
  2. JDK-8158361

AArch64: Address calculation missed optimizations

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    • Subcomponent:
    • Resolved In Build:
      b21
    • CPU:
      aarch64

      Description

      In calculations involving Unsafe addressing we're missing opportunities to combine instructions.

      We're seeing, for example:

        sbfiz x13, x13, #3, #32
        add x15, x13, x10

      instead of

        add x15, x10, w13, sxtw #3

      This is due to a couple of missing patterns.

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            Assignee:
            aph Andrew Haley
            Reporter:
            aph Andrew Haley
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