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  1. JDK
  2. JDK-8043137

Collapse long sequences of NOP in Nashorn bytecode output

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Details

    • Enhancement
    • Status: Resolved
    • P4
    • Resolution: Fixed
    • 9
    • 9
    • core-libs
    • None
    • b17
    • generic
    • generic

    Backports

      Description

        Due to the way our codegen works, we must emit a bunch of unreachable code in our continuation methods. ASM replaces them with long stretches of NOP, NOP, ... ATHROW. They take up a lot of space in the print output of --print-code switch. They should be replaced with an ellipse, e.g.

           17 nop
           18 nop
           19 nop
           20 nop
           21 nop
           22 nop
           23 athrow

        becomes:

           17 nop
                  ...
           23 athrow

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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-8055576 Collapse long sequences of NOP in Nashorn bytecode output

            • 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-8064109 Collapse long sequences of NOP in Nashorn bytecode output

            • 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-8070346 Collapse long sequences of NOP in Nashorn bytecode output

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

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                attila Attila Szegedi
                attila Attila Szegedi
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                Dates

                  Created:
                  Updated:
                  Resolved: