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  1. JDK
  2. JDK-8226721

Missing intrinsics for Math.ceil, floor, rint

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    • b17
    • x86_64
    • linux_ubuntu

    Backports

      Description

        ADDITIONAL SYSTEM INFORMATION :
        Ivy Bridge (SSE4.1, SSE4.2, AVX)
        11.0.3+7-Ubuntu-1ubuntu218.04.1
        JDK 11.0.3, OpenJDK 64-Bit Server VM

        A DESCRIPTION OF THE PROBLEM :
        The Math class lacks intrinsic implementations of the double precision fp rounding methods: ceil, floor, rint.

        On x86 SSE/AVX systems; It would be preferable to utilize instructions 'roundsd' rather than the default jdk implementation.
        Since there's also a packed variation, '(v)roundpd', the use of intrinsics may enable auto-vectorization where currently such optimization is obstructed by the default implementations of Math.ceil, floor, rint.


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            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-8247587 Missing intrinsics for Math.ceil, floor, rint

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • 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-8266634 Missing intrinsics for Math.ceil, floor, rint

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8231713 x86_32 build failures after JDK-8226721 (Missing intrinsics for Math.ceil, floor, rint)

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

            Enhancement - null JDK-8230525 Missing intrinsics for Integer and Long operations

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

            Enhancement - null JDK-8230591 AArch64: Missing intrinsics for Math.ceil, floor, rint

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

            Enhancement - null JDK-8312569 RISC-V: Missing intrinsics for Math.ceil, floor, rint

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

            Enhancement - null JDK-8230835 [Graal] Missing intrinsics for Math.ceil, floor, rint.

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

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                jbhateja Jatin Bhateja
                webbuggrp Webbug Group
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                  Updated:
                  Resolved: