[jira] Resolved: (HARMONY-5464) [drlvm] vm helper improvement for better performance

["Alexey Varlamov (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HARMONY-5464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alexey Varlamov resolved HARMONY-5464.
--------------------------------------

       Resolution: Fixed
    Fix Version/s: 5.0M5

Maksim, it was my local misconfiguration, sorry for the trouble.
Applied at revision: 619775, thanks!


> [drlvm] vm helper improvement for better performance
> ----------------------------------------------------
>
>                 Key: HARMONY-5464
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5464
>             Project: Harmony
>          Issue Type: Improvement
>          Components: DRLVM
>         Environment: Hope it works everywhere
>            Reporter: Maksim Ananjev
>            Assignee: Alexey Varlamov
>            Priority: Minor
>             Fix For: 5.0M5
>
>         Attachments: HARMONY_5464.patch
>
>
> The issue deals with "load interface vtable support".  Returning zero address and not generating NPE if the object is null is safe in terms of preserving program semantics(the exception will be generatedon the first method invocation) and allows profitable code transformations such as hoisting vm helper outside the loop body. This is our current convention which touches all variants of this helper. If it changes, all variants must be fixed
> The patch also includes osr_path enabling because it depends on this feature.

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