[jira] Commented: (HARMONY-5398) Enable array copy optimization for generational mode in JIT

["Aleksey Shipilev (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HARMONY-5398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12559905#action_12559905 ] 

Aleksey Shipilev commented on HARMONY-5398:
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Chen, we have a POC patch which enables JIT-generated arraycopy for primitive types when WB enabled. Would it solve your issue?

> Enable array copy optimization for generational mode in JIT
> -----------------------------------------------------------
>
>                 Key: HARMONY-5398
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5398
>             Project: Harmony
>          Issue Type: Improvement
>          Components: DRLVM
>         Environment: All supported environment
>            Reporter: Chen Yang
>
> Current JIT cannot apply the array copy optimization as in non-generational mode, but relies on current array_copy implementation in harmonyvm, which results in poor performance. In order to achieve better performance, inlined array copy optimization in JIT is preferred, at least for those non reference array. 

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