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  1. JDK
  2. JDK-8173195

[BACKOUT] 8087341: C2 doesn't optimize redundant memory operations with G1

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    Backports

      Description

        JDK-8087341 causes an anti-dependency on the volatile membar that results in a crash in the register allocator due to invalid instruction scheduling (see JDK-8172850). Since we are very late in the JDK 9 release cycle, we should back out the change and redo the enhancement in JDK 10.

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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-8174453 [BACKOUT] 8087341: C2 doesn't optimize redundant memory operations with G1

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8172850 Anti-dependency on membar causes crash in register allocator due to invalid instruction scheduling

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

            Enhancement - null JDK-8173196 [REDO] C2 does not optimize redundant memory operations with G1

            • 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-8172850 Anti-dependency on membar causes crash in register allocator due to invalid instruction scheduling

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

            Enhancement - null JDK-8087341 C2 doesn't optimize redundant memory operations with G1

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

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                thartmann Tobias Hartmann
                thartmann Tobias Hartmann
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                  Updated:
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