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  1. JDK
  2. JDK-8074981

Integer/FP scalar reduction optimization

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    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P3
    • Resolution: Fixed
    • Affects Version/s: 9
    • Fix Version/s: 9
    • Component/s: hotspot
    • Labels:
      None
    • Subcomponent:
    • Resolved In Build:
      b64

      Backports

        Description

        Add scalar reduction optimization to C2 to take advantage of vector instruction support in modern CPUs.

        This enhancement is contributed by Intel and sponsored by the hotspot compiler team.

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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-8082641 Integer/FP scalar reduction optimization

            • P3 - Major loss of function.
            • Resolved
            duplicates

            Enhancement - null JDK-7192383 vectorize sum of arrays's elements loop

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

            Enhancement - null JDK-8078563 Restrict reduction optimization

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8232106 [x86] C2: SIGILL due to usage of SSSE3 instructions on processors which don't support it

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8279622 C2: miscompilation of map pattern as a vector reduction

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8261147 C2: Node is wrongly marked as reduction resulting in a wrong execution due to wrong vector instructions

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

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                Assignee:
                neliasso Nils Eliasson (Inactive)
                Reporter:
                neliasso Nils Eliasson (Inactive)
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                  Dates

                  Created:
                  Updated:
                  Resolved: