[jira] Updated: (HARMONY-2084) [drlvm][opt] Jitrino.OPT inliner can cause native SOE exception for some large methods

["Mikhail Fursov (JIRA)" <ji...@apache.org>]

     [ http://issues.apache.org/jira/browse/HARMONY-2084?page=all ]

Mikhail Fursov updated HARMONY-2084:
------------------------------------

    Attachment: Test.java

The test.

Run it in -Xem:opt mode.

Note, if turn inliner off the test starts passing (-Djit.CS_OPT.f.filter=Test::main -Djit.CS_OPT.arg.optimizer.inline=off)

> [drlvm][opt] Jitrino.OPT inliner can cause native SOE exception for some large methods
> --------------------------------------------------------------------------------------
>
>                 Key: HARMONY-2084
>                 URL: http://issues.apache.org/jira/browse/HARMONY-2084
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Mikhail Fursov
>            Priority: Minor
>         Attachments: Test.java
>
>
> The inliner in Jitrino.OPT compiler stops inlining if bytecode size of the current method is > some threshold.
> Sometimes (for synchronized methods) the bytecode size is small, but the size of the resulted IR is very large. As the result Inliner can produce very large linear IR graphs that  cause SOE in recursive algorithms like DFS
> The proposal is to add one more threshold to inliner: stop inlining if the number of nodes in IR is greater then some const.

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