Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8193518

C2: Vector registers sometimes corrupted at safepoint

    XMLWordPrintable

Details

    • Bug
    • Resolution: Fixed
    • P2
    • 10
    • 10
    • hotspot
    • b37
    • Verified

    Backports

      Description

        The logic that computes Compile::_max_vector_size actually only keeps the max vector size of the last loop processed by loop optimizations. A method with multiple loops, the last of which uses shorter vectors than the others, can then be registered as not requiring vectors to be saved on a safepoint which causes corruptions of the vector registers.

        Attachments

          Issue Links

            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-8194585 C2: Vector registers sometimes corrupted at safepoint

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8249608 Vector register used by C2 compiled method corrupted at safepoint

            • P3 - Major loss of function.
            • Resolved

            Activity

              People

                roland Roland Westrelin
                roland Roland Westrelin
                Votes:
                0 Vote for this issue
                Watchers:
                5 Start watching this issue

                Dates

                  Created:
                  Updated:
                  Resolved: