Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8264063

Outer Safepoint poll load should not reference the head of inner strip mined loop.

    XMLWordPrintable

    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 17
    • Fix Version/s: 17
    • Component/s: hotspot
    • Labels:
    • Subcomponent:
    • Resolved In Build:
      b18

      Description

      Enhancement JDK-8247307 "C2: Loop array fill stub routines are not called" introduced new code which checks for special condition in strip-mined counted loops when inner CountedLoopNode may be used by the address polling node of the outer safepoint.
      After that we hit JDK-8263352 issue in this new code.

      But the actual issue is that we don't need JDK-8247307 optimization because outer Safepoint poll load should not reference inner CountedLoopNode.

      Roland suggested next change to fix it. See his comment in https://github.com/openjdk/jdk/pull/3061




        Attachments

          Issue Links

            Activity

              People

              Assignee:
              kvn Vladimir Kozlov
              Reporter:
              kvn Vladimir Kozlov
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

                Dates

                Created:
                Updated:
                Resolved: