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  1. JDK
  2. JDK-8274401

C2: GraphKit::load_array_element bypasses Access API

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    • b18

    Backports

      Description

        C2: GraphKit::load_array_element only creates nodes for loading a raw element from the given array. This is wrong when the element is an Oop which needs a load barrier for some GCs.

        There's currently only one usage of load_array_element for an Oop element in code which is only used by PPC64 and s390. These platforms currently don't support GCs with load barriers. So, this issue needs to get fixed in order to support these GCs.

        It will also need to get fixed for possible future usages with Oop elements.


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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8275398 C2: GraphKit::load_array_element bypasses Access API

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved
            relates to

            Enhancement - null JDK-8274851 [ppc64] Port zgc to linux on ppc64le

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved
            links to

            Commit Commit openjdk/jdk17u/451611ff

            Commit Commit openjdk/jdk/a8210c53

            Review Review openjdk/jdk17u/191

            Review Review openjdk/jdk/5727

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                mdoerr Martin Doerr
                mdoerr Martin Doerr
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