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  1. JDK
  2. JDK-8170153

PPC64/s390x/aarch64: Poor StrictMath performance due to non-optimized compilation

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    • b148
    • ppc, aarch64, s390x
    • linux

    Backports

      Description

        Currently fdlibm optimization is disabled for PPC64/s390x/aarch64, as a consequence StrictMath methods like, but not limited to, sin(), cos(), and tan() perform poor.

        Switching on the O3 optimization on gcc can damage the precision of those methods, nonetheless it's possible to avoid that side effect and yet get the huge benefits from the -O3 optimization on PPC64/s390 if -ffp-contract=off is passed in addition to the -O3 optimization flag.

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            backported by

            Bug - A problem which impairs or prevents the functions of the product. JDK-8170873 PPC64/aarch64: Poor StrictMath performance due to non-optimized compilation

            • 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-8183588 PPC64/s390x/aarch64: Poor StrictMath performance due to non-optimized compilation

            • 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-8192077 PPC64/s390x/aarch64: Poor StrictMath performance due to non-optimized compilation

            • 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-8210416 [linux] Poor StrictMath performance due to non-optimized compilation

            • 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-8210425 [x86] sharedRuntimeTrig/sharedRuntimeTrans compiled without optimization

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

            Enhancement - null JDK-4947390 Improve compiler options compiling fdlibm

            • P5 - Cosmetic problem like misspelt words or misaligned text.
            • Closed

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                gromero Gustavo Romero
                gromero Gustavo Romero
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                  Created:
                  Updated:
                  Resolved: