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  1. JDK
  2. JDK-8187822

C2 conditonal move optimization might create broken graph

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    • Bug
    • Resolution: Fixed
    • P2
    • 10
    • 8, 9, 10
    • hotspot
    • b31
    • Verified

    Backports

      Description

        Attached test case fails with:

        # Internal Error (/home/rwestrel/aarch64-jdk8u-shenandoah/hotspot/src/share/vm/opto/loopnode.cpp:3579), pid=6922, tid=0x00007f4472cc4700
        # assert(false) failed: Bad graph detected in build_loop_late

        PhaseIdealLoop::conditional_move() creates a CMoveI node, updates the control of its inputs but not of a dependent data node. A following split thru phi leads to a broken graph.

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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-8196242 C2 conditonal move optimization might create broken graph

            • P2 - Crashes, loss of data, severe memory leak.
            • 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-8201051 C2 conditonal move optimization might create broken graph

            • P2 - Crashes, loss of data, severe memory leak.
            • 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-8203081 C2 conditonal move optimization might create broken graph

            • P2 - Crashes, loss of data, severe memory leak.
            • 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-8191007 C2 conditonal move optimization might create broken graph

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed
            relates to

            Bug - A problem which impairs or prevents the functions of the product. JDK-8228888 C2 compilation fails with assert "m has strange control"

            • P3 - Major loss of function.
            • Resolved

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                roland Roland Westrelin
                roland Roland Westrelin
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                  Created:
                  Updated:
                  Resolved: