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https://issues.apache.org/jira/browse/ACCUMULO-2762?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14056165#comment-14056165
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Eric Newton commented on ACCUMULO-2762:
---------------------------------------
Google turns up this longer [explanation |
http://thiemonagel.de/2010/01/no-strict-aliasing].
The native map should not be considered legacy code, and any bugs we have
related to strict aliasing should be fixed. We should remove the flag, though
I doubt it has any performance impact.
I don't know who first added the flag, or why. It has been there prior to
incubation.
> Use better compiler optimizations by default for native maps
> ------------------------------------------------------------
>
> Key: ACCUMULO-2762
> URL: https://issues.apache.org/jira/browse/ACCUMULO-2762
> Project: Accumulo
> Issue Type: Improvement
> Components: native
> Affects Versions: 1.5.1, 1.6.0
> Reporter: Christopher Tubbs
> Assignee: Christopher Tubbs
> Priority: Minor
> Labels: newbie
> Fix For: 1.5.2, 1.6.1, 1.7.0
>
> Attachments: ACCUMULO-2762.v1.patch
>
>
> [A
> comment|https://issues.apache.org/jira/browse/ACCUMULO-2749?focusedCommentId=13985780&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13985780]
> on ACCUMULO-2749 identified improved performance with better compiler
> optimizations for native maps (-O3 instead of -O2).
> The native shared library is small, and enabling these additional
> optimizations will not result in a significantly slower build, so I don't see
> any reason why we should not enable better optimizations by default in the
> Makefile, if we can identify them.
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