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https://issues.apache.org/jira/browse/DAFFODIL-830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16458654#comment-16458654
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Michael Beckerle commented on DAFFODIL-830:
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Assigning to Josh as he has sequence-combinator changes that definitely
revisited this whole issue, so such time as that gets committed that will
reflect closing out this matter as well.
> Performance: Remove unnecessary SeqCombParsers from generated parser
> --------------------------------------------------------------------
>
> Key: DAFFODIL-830
> URL: https://issues.apache.org/jira/browse/DAFFODIL-830
> Project: Daffodil
> Issue Type: Improvement
> Components: Middle "End", Performance
> Affects Versions: s10
> Reporter: Michael Beckerle
> Priority: Minor
> Fix For: deferred
>
>
> This is another missing optimization.
> We often have parsers that have nested <seq>....</seq>
> This is never needed as these can be merged. This improves tracing and
> debugging by avoiding having these excess things there.
> It also simply reduces the number of parser 'actions' a bit, so can't hurt
> for performance reasons. Every parsed element seems to have at least one
> excess <seq>...</seq> created around it.
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