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Posted to commits@daffodil.apache.org by "Mike Beckerle (Jira)" <ji...@apache.org> on 2020/12/16 19:10:00 UTC

[jira] [Updated] (DAFFODIL-1177) DPath should do more constant expression folding

     [ https://issues.apache.org/jira/browse/DAFFODIL-1177?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mike Beckerle updated DAFFODIL-1177:
------------------------------------
    Priority: Minor  (was: Major)

> DPath should do more constant expression folding
> ------------------------------------------------
>
>                 Key: DAFFODIL-1177
>                 URL: https://issues.apache.org/jira/browse/DAFFODIL-1177
>             Project: Daffodil
>          Issue Type: Improvement
>          Components: Middle &quot;End&quot;, Performance
>    Affects Versions: s15
>            Reporter: Mike Beckerle
>            Priority: Minor
>
> DPath will optimize out an expression only if the whole expression is constant. If sub-expressions within it are constants, it will not isolate those and convert them into constants.
> Unclear how important this is to performance. It's just something compilers normally do, but our DPath compiler isn't yet doing.



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