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From "Mikhail Fursov (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HARMONY-3692) [drlvm][jit][opt] Ineffective simplifier work on some tests in -Xem:opt mode
Date Tue, 14 Aug 2007 07:33:31 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-3692?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mikhail Fursov reassigned HARMONY-3692:
---------------------------------------

    Assignee: Mikhail Fursov

> [drlvm][jit][opt] Ineffective simplifier work on some tests in -Xem:opt mode
> ----------------------------------------------------------------------------
>
>                 Key: HARMONY-3692
>                 URL: https://issues.apache.org/jira/browse/HARMONY-3692
>             Project: Harmony
>          Issue Type: Task
>          Components: DRLVM
>            Reporter: Mikhail Fursov
>            Assignee: Mikhail Fursov
>            Priority: Minor
>
> For the first test in HARMONY-3691 run in -Xem:mode simplifier is not able to reduce
the test to 'return' inst only.
> It can be caused by 'ssa'-var reassignment in 'phi' inst in a block with 1 entry. This
block is the result of branch folding in previous simplification pass.
> This is performance issue and is not critical. However we should tune simplifier to handle
this situation or add more ssa/dessa/simplify sequences to HLO path.

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