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Posted to commits@harmony.apache.org by "Mikhail Fursov (JIRA)" <ji...@apache.org> on 2007/04/18 11:05:15 UTC

[jira] Created: (HARMONY-3692) [drlvm][jit][opt] Ineffective simplifier work on some tests in -Xem:opt mode

[drlvm][jit][opt] Ineffective simplifier work on some tests in -Xem:opt mode
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                 Key: HARMONY-3692
                 URL: https://issues.apache.org/jira/browse/HARMONY-3692
             Project: Harmony
          Issue Type: Task
          Components: DRLVM
            Reporter: 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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[jira] Assigned: (HARMONY-3692) [drlvm][jit][opt] Ineffective simplifier work on some tests in -Xem:opt mode

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