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  1. JDK
  2. JDK-8231586

enlarge encoding space for OopMapValue offsets

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      Description

        The current HotSpot OopMapValue encoding uses 16 and steals 4 bits to represent 4 different flag values. The values are disjoint so they could be encoded by 2 bits, which quadruples the offset range for the encoding.

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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-8244062 enlarge encoding space for OopMapValue offsets

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • 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-8246233 enlarge encoding space for OopMapValue offsets

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • 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-8260305 enlarge encoding space for OopMapValue offsets

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • 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-8261052 enlarge encoding space for OopMapValue offsets

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8232083 Minimal VM is broken after JDK-8231586

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8237949 CTW: C1 compilation fails with "too many stack slots used"

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8261236 C2: ClhsdbJstackXcompStress test fails when StressGCM is enabled

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

            Commit Commit openjdk/jdk13u-dev/40e05192

            Review Review openjdk/jdk13u-dev/84

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                never Tom Rodriguez
                never Tom Rodriguez
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                  Created:
                  Updated:
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