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  1. JDK
  2. JDK-8248901

Signed immediate support in .../share/assembler.hpp is broken.

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    • b07
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    • generic

    Backports

      Description

        Min/Max values are undefined for nbit > 32 (and nbit < 0) in:

        static int min_simm(int nbits) { return -(intptr_t(1) << (nbits - 1)) ; }
        static int max_simm(int nbits) { return (intptr_t(1) << (nbits - 1)) - 1; }
         // Test if x is within signed immediate range for nbits
         static bool is_simm(intptr_t x, int nbits) { return min_simm(nbits) <= x && x <= max_simm(nbits); }

        The max/min_simm* versions are unused (with one exception).

        Unsigned version is not provided.

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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-8258410 Signed immediate support in .../share/assembler.hpp is broken.

            • 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-8258667 Signed immediate support in .../share/assembler.hpp is broken.

            • 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-8258990 Signed immediate support in .../share/assembler.hpp is broken.

            • 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-8262564 Signed immediate support in .../share/assembler.hpp is broken.

            • 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-8270379 Signed immediate support in .../share/assembler.hpp is broken.

            • 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-8272214 [8u] Build failure after backport of JDK-8248901

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8247766 AArch64: guarantee(val < (1U << nbits)) failed: Field too big for insn

            • P3 - Major loss of function.
            • Resolved

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                phedlin Patric Hedlin (Inactive)
                phedlin Patric Hedlin (Inactive)
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                  Updated:
                  Resolved: