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  1. JDK
  2. JDK-8249781

AArch64: AOT compiled code crashes if C2 allocates r27

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    • b20
    • 15
    • b08
    • aarch64
    • linux

    Backports

      Description

        AOT compiled code always assumes r27 is the heap base pointer, but since JDK-8242449 C2 can allocate it as a general register if the compressed class base is null.

        To reproduce:

        make test TEST="compiler/aot/cli/jaotc/CompileModuleTest.java" JTREG="VM_OPTIONS=-Xcomp -XX:-TieredCompilation"

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            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-8256845 AArch64: AOT compiled code crashes if C2 allocates r27

            • P3 - Major loss of function.
            • Resolved

            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-8256991 AArch64: AOT compiled code crashes if C2 allocates r27

            • P3 - Major loss of function.
            • Resolved
            relates to

            Enhancement - null JDK-8242449 AArch64: r27 can be allocated in CompressedOops mode

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

            Review Review openjdk/jdk11u-dev/138

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                ngasson Nick Gasson
                ngasson Nick Gasson
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                  Created:
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                  Resolved: