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  1. JDK
  2. JDK-8264063

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

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Details

    • Enhancement
    • Status: Resolved
    • P4
    • Resolution: Fixed
    • 17
    • 17
    • hotspot
    • 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




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              kvn Vladimir Kozlov
              kvn Vladimir Kozlov
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                Updated:
                Resolved: