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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SYSTEMML-2010) Generalized rewrite for merging sequence of statement blocks
Date Fri, 10 Nov 2017 08:00:36 GMT
Matthias Boehm created SYSTEMML-2010:
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             Summary: Generalized rewrite for merging sequence of statement blocks
                 Key: SYSTEMML-2010
                 URL: https://issues.apache.org/jira/browse/SYSTEMML-2010
             Project: SystemML
          Issue Type: Task
            Reporter: Matthias Boehm


This task aims to generalize the existing rewrite for merging unconditional sequences of statement
blocks. So far we avoid merging if either block has function calls in it. However, this is
too conservative, as we good still merge blocks if written variables are not read in the subsequent
block, leading to missed opportunities for common subexpression elimination. 



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