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  1. JDK
  2. JDK-8290034

Auto vectorize reverse bit operations.

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    • b09
    • generic

    Description

      - Intrinsify scalar bit reverse APIs to emit efficient instruction sequence for X86 targets with and w/o GNFI feature.
      - Handle auto-vectorization of Integer/Long.reverse bit operations.
      - Backend implementation for these were added with 4th incubation of VectorAPIs.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8291559 x86: compiler/vectorization/TestReverseBitsVector.java fails

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8293039 Integer.reverse produces incorrect results

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

          Enhancement - null JDK-8296999 AArch64: scalar intrinsics for reverse method in Integer and Long

          • 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-8288112 C2: Error: ShouldNotReachHere() in Type::typerr()

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8291649 multiple tests failing with -Xcomp after JDK-8290034

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

          Commit Commit openjdk/jdk/5d82d67a

          Review Review openjdk/jdk/9535

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              jbhateja Jatin Bhateja
              jbhateja Jatin Bhateja
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              Dates

                Created:
                Updated:
                Resolved: