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From "Aleksey Shipilev (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-5399) [drlvm][jit] Enabling arraycopy optimization for primitive types when write barriers are enabled
Date Thu, 17 Jan 2008 13:41:34 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-5399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12559925#action_12559925
] 

Aleksey Shipilev commented on HARMONY-5399:
-------------------------------------------

WB-3 patch reworked:
 1. Default behavior was DISABLING arraycopy for reference arrays AT ALL, even when write
barriers were not requested. That means our baseline is not valid if measured with latest
POC patch onboard. I've fixed that.
 2. Minor glitches in code sweeped out.
 3. Refactoring of arraycopyOptimizable is done, now it can be read without problems.


> [drlvm][jit] Enabling arraycopy optimization for primitive types when write barriers
are enabled
> ------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-5399
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5399
>             Project: Harmony
>          Issue Type: Improvement
>         Environment: All
>            Reporter: Aleksey Shipilev
>         Attachments: WB-2.patch, WB-3.patch
>
>
> JIT arraycopy optimization is disabled automatically when WB are enabled. Attached patch
re-enables arraycopy optimization for arrays of primitive types, which shouldn't interfere
with WB activity.

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