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  1. JDK
  2. JDK-8270947

AArch64: C1: use zero_words to initialize all objects

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    • b09
    • aarch64

    Backports

      Description

        C1 has its own code generators for zeroing words. We should rip them out and use MacroAssembler::zero words which was written for C2. It's shorter and faster and there's less code to maintain.

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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-8293350 AArch64: C1: use zero_words to initialize all objects

            • 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-8293572 AArch64: C1: use zero_words to initialize all objects

            • 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-8295480 AArch64: C1: use zero_words to initialize all objects

            • P3 - Major loss of function.
            • Resolved
            duplicates

            Enhancement - null JDK-8270830 Aarch64: Use stp to initialize object on C1

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8280234 AArch64 "core" variant does not build after JDK-8270947

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8272094 compiler/codecache/TestStressCodeBuffers.java crashes with "failed to allocate space for trampoline"

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8271956 AArch64: C1 build failed after JDK-8270947

            • 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-8272791 java -XX:BlockZeroingLowLimit=1 crashes after 8270947

            • 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-8287129 TestStressCodeBuffers.java crashes on macosx_aarch64

            • P3 - Major loss of function.
            • Closed
            links to

            Commit Commit openjdk/jdk17u-dev/974ff6b9

            Commit Commit openjdk/jdk/6c68ce2d

            Review Review openjdk/jdk11u-dev/1502

            Review Review openjdk/jdk17u-dev/792

            Review Review openjdk/jdk/4919

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                aph Andrew Haley
                aph Andrew Haley
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                  Created:
                  Updated:
                  Resolved: