AArch64: Optimize MacroAssembler for identity bit manipulations

XMLWordPrintable

    • Type: Enhancement
    • Resolution: Not an Issue
    • Priority: P4
    • tbd
    • Affects Version/s: 17, 21, 23, 24
    • Component/s: hotspot

      This is a more comprehensive variant of JDK-8341893: we can catch the "identity" bit manipulations and emit direct moves in those cases. This sets us up for zero-latency mov-s, or even for eliminating the mov-s altogether when source and destination registers are the same.

        1. 8341895-aarch64-masm-shifts.patch
          2 kB

            Assignee:
            Aleksey Shipilev
            Reporter:
            Aleksey Shipilev
            Votes:
            0 Vote for this issue
            Watchers:
            1 Start watching this issue

              Created:
              Updated:
              Resolved: