[jira] Updated: (HARMONY-3584) [drlvm][jit][opt] arraycopy folding implementation in guarded manner

["Xiao-Feng Li (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HARMONY-3584?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xiao-Feng Li updated HARMONY-3584:
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    Priority: Critical  (was: Minor)

I raised the priority of this issue. It's a blocker to generational mode GC collection. 

> [drlvm][jit][opt] arraycopy folding implementation in guarded manner
> --------------------------------------------------------------------
>
>                 Key: HARMONY-3584
>                 URL: https://issues.apache.org/jira/browse/HARMONY-3584
>             Project: Harmony
>          Issue Type: Sub-task
>          Components: DRLVM
>            Reporter: George Timoshenko
>            Priority: Critical
>
> the feature (arraycopy call replacement) can be done in the guarded manner. When the classes of the arrays are being checked at runtime. 
> (It is not obvious if it gives a performance effect or not). 
> when this approach (guarded arraycopy call "inlining") is being implemented this optimisation should be moved out from the translator and inserted (before inliner) into the HLO path as a separate optimisation. 

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