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  1. JDK
  2. JDK-8275330

C2: assert(n->is_Root() || n->is_Region() || n->is_Phi() || n->is_MachMerge() || def_block->dominates(block)) failed: uses must be dominated by definitions

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    • b26

    Backports

      Description

        (synopsis is provisional, feel free to change it)

        The attached Fuzzer test fails like:

        $ ../build/linux-x86_64-server-fastdebug/images/jdk/bin/java -Xmx512m -XX:+UnlockDiagnosticVMOptions -Xcomp -XX:CompileOnly=Test -XX:-TieredCompilation Test

        # Internal Error (/home/shade/trunks/jdk/src/hotspot/share/opto/block.cpp:1252), pid=956055, tid=956068
        # assert(n->is_Root() || n->is_Region() || n->is_Phi() || n->is_MachMerge() || def_block->dominates(block)) failed: uses must be dominated by definitions

        Bisection points to JDK-8272562 as the starting point.

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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-8280558 C2: assert(n->is_Root() || n->is_Region() || n->is_Phi() || n->is_MachMerge() || def_block->dominates(block)) failed: uses must be dominated by definitions

            • 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-8281540 C2: assert(n->is_Root() || n->is_Region() || n->is_Phi() || n->is_MachMerge() || def_block->dominates(block)) failed: uses must be dominated by definitions

            • 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-8284651 C2: assert(n->is_Root() || n->is_Region() || n->is_Phi() || n->is_MachMerge() || def_block->dominates(block)) failed: uses must be dominated by definitions

            • 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-8285299 C2: assert(n->is_Root() || n->is_Region() || n->is_Phi() || n->is_MachMerge() || def_block->dominates(block)) failed: uses must be dominated by definitions

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8272562 C2: assert(false) failed: Bad graph detected in build_loop_late

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

            Commit Commit openjdk/jdk11u-dev/4741ab5a

            Commit Commit openjdk/jdk17u-dev/f3916545

            Commit Commit openjdk/jdk/3e798dd4

            Review Review openjdk/jdk11u-dev/1002

            Review Review openjdk/jdk17u-dev/143

            Review Review openjdk/jdk/6429

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                roland Roland Westrelin
                shade Aleksey Shipilev
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                  Created:
                  Updated:
                  Resolved: