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From "Xiaoming Gu (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HARMONY-5826) [drlvm][jit][opt][performance] Magic for java.math.Multiplication.unsignedMultAdd2
Date Fri, 10 Oct 2008 02:36:44 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-5826?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xiaoming Gu updated HARMONY-5826:
---------------------------------

    Attachment: H5826-V2.patch

This message is for V2 patch.

Some changes are made following Aleksey's suggestion. Now the improvement is about 30% (from
192.01 to 249.76) on my 4-core desktop.

I'm going to look into the patch to check whether it could be implemented in peephole or some
other common pass.

> [drlvm][jit][opt][performance] Magic for java.math.Multiplication.unsignedMultAdd2
> ----------------------------------------------------------------------------------
>
>                 Key: HARMONY-5826
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5826
>             Project: Harmony
>          Issue Type: Improvement
>          Components: DRLVM
>            Reporter: Aleksey Shipilev
>         Attachments: H5826-V2.patch, vm-jit-math-unsignedMultAdd2-magic-rc1.patch
>
>
> Implementation of magic for java.math.Multiplication.unsignedMultAdd2, extracted in HARMONY-5825.

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