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From "Mikhail Fursov (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-3692) [drlvm][jit][opt] Ineffective simplifier work on some tests in -Xem:opt mode
Date Wed, 18 Apr 2007 09:05:15 GMT
[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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