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Posted to commits@harmony.apache.org by "Xiaoming Gu (JIRA)" <ji...@apache.org> on 2009/01/22 12:49:59 UTC
[jira] Updated: (HARMONY-5826) [drlvm][jit][opt][performance] Magic
for java.math.Multiplication.unsignedMultAdd2
[ https://issues.apache.org/jira/browse/HARMONY-5826?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xiaoming Gu updated HARMONY-5826:
---------------------------------
Attachment: H5826-V7.zip
This message is for V7.
In this version, the main change is that global_prop works with early_prop in server, server_aggressive and server_static modes. I spent some days to study the degradations in some benchmarks of SPECjvm2008 when using V6. Finally I found the reason is the propagation on MEM operands. After trying several ways, I thought the best way is to reuse the code in early_prop. So the two optimizations about propagations work together now and we don't miss any opportunity caught before.
> [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, H5826-V3.patch, H5826-V4.patch, H5826-V5.patch.zip, H5826-V6.zip, H5826-V7.zip, vm-jit-math-unsignedMultAdd2-magic-rc1.patch
>
>
> Implementation of magic for java.math.Multiplication.unsignedMultAdd2, extracted in HARMONY-5825.
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