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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SYSTEMML-2084) Implementation of language and compiler extension
Date Sun, 13 May 2018 00:47:00 GMT

    [ https://issues.apache.org/jira/browse/SYSTEMML-2084?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16473312#comment-16473312
] 

Matthias Boehm commented on SYSTEMML-2084:
------------------------------------------

This description is a good summary. Additionally, I would recommend to start with a simple
test case (integrated into our junit test suite) and add a dummy runtime instruction, which
allows evaluating that the parser/compiler integration is properly working. Also, this task
could be broken down into (1) extensions of parsing and validation at language level, (2)
hops, lops, and instruction generation, (3) IPA integration, and (4) parfor integration (robustness
for the case that paramserv it self is used inside a parfor statement).

> Implementation of language and compiler extension
> -------------------------------------------------
>
>                 Key: SYSTEMML-2084
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-2084
>             Project: SystemML
>          Issue Type: Sub-task
>            Reporter: Matthias Boehm
>            Assignee: LI Guobao
>            Priority: Major
>
> This part aims to add an additional language support for the “paramserv” function
in order to be able to compile this new function. Since SystemML already supports the parameterized
builtin function, we can easily extend an additional operation type and generate a new instruction
for the “paramserv” function. Recently, we have also added a new “eval” built-in function
which is capable to pass a function pointer as argument so that it can be called in runtime.
Similar to it, we would need to extend the inter-procedural analysis to avoid removing unused
constructed functions in the presence of second-order “paramserv” function. Because the
referenced functions, i.e., the aggregate function and update function, should be present
in runtime.



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