Matthias Boehm created SYSTEMML-833:
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Summary: Additional cleanup rewrites
Key: SYSTEMML-833
URL: https://issues.apache.org/jira/browse/SYSTEMML-833
Project: SystemML
Issue Type: Bug
Components: Compiler
Reporter: Matthias Boehm
The rewritten HOP sometimes contains unnecessary as.matrix/as.scalar cast
pairs, reorg operations with 1x1 dimensions (e.g., transpose, reshape), and
unnecessary aggregations (e.g., sum over 1x1 matrix). In order to simplify
debugging (but not performance relevant), we should add a couple of cleanup
rewrites and extend existing rewrites that remove these unnecessary operations.
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