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  1. JDK
  2. JDK-8311691

C2: Remove legacy code related to PostLoopMultiversioning

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Details

    • Enhancement
    • Resolution: Fixed
    • P4
    • 22
    • 22
    • hotspot
    • b07
    • generic
    • generic

    Description

      As discussed in JDK-8308994, we are working on re-implementation of post loop vectorization and planning to refactor current SuperWord code. As nobody is using or maintaining the old implementation now, to make the refactoring work easier, we propose to remove the legacy code of the old implementation first.

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. JDK-8304774 compiler/c2/irTests/TestVectorConditionalMove.java fails with -XX:+PostLoopMultiversioning

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

          Bug - A problem which impairs or prevents the functions of the product. JDK-8301657 Fix post loop vectorization with parallel loop iv

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

          Bug - A problem which impairs or prevents the functions of the product. JDK-8301904 Incorrect post loop vectorization when IV is converted to long

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

          Bug - A problem which impairs or prevents the functions of the product. JDK-8301944 assert(cmp == __null) failed: A cmp with 2 OpaqueZeroTripGuard inputs with -XX:+PostLoopMultiversioning

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

          Bug - A problem which impairs or prevents the functions of the product. JDK-8308949 C2 SuperWord: assert(vmask != nullptr) failed: vector mask should be generated

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

          Enhancement - null JDK-8308994 C2: Re-implement experimental post loop vectorization

          • P3 - Major loss of function.
          • In Progress
          links to

          Commit Commit openjdk/jdk/a38582e9

          Review Review openjdk/jdk/14824

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              pli Pengfei Li
              pli Pengfei Li
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              Dates

                Created:
                Updated:
                Resolved: