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Regis Xu commented on HARMONY-6045:
-----------------------------------
Hi Kevin,
This patch is interesting, do you have any benchmark to prove the improvement?
> [classlib] [luni] Optimize java.lang.String.toUpperCase(), String.toLowerCase() and String
sharing for more performance gains
> -----------------------------------------------------------------------------------------------------------------------------
>
> Key: HARMONY-6045
> URL: https://issues.apache.org/jira/browse/HARMONY-6045
> Project: Harmony
> Issue Type: Improvement
> Components: Classlib
> Affects Versions: 5.0M8
> Reporter: Kevin Zhou
> Fix For: 5.0M9
>
> Attachments: HARMONY-6045.diff
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> Recently, I make some improvement on java.lang.String and java.lang.AbstractStringBuilder
class for more performance gains.
> 1. Move the share mode for all the AbstractStringBuilder.append method, since the append
never change the share things.
> 2. Move the share mode in AbstractStringBuilder.setLength method
> 3. Add the special care for the ASCII things, especially on case things of String.toUpperCase
and to LowerCase methods.
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