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From "Dmitry Pronichkin (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-5014) [drlvm][jit][opt] "instanceof" breaks scalar replecement in the new HashMap implementation
Date Wed, 24 Oct 2007 12:33:50 GMT
[drlvm][jit][opt] "instanceof" breaks scalar replecement in the new HashMap implementation
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                 Key: HARMONY-5014
                 URL: https://issues.apache.org/jira/browse/HARMONY-5014
             Project: Harmony
          Issue Type: Improvement
          Components: DRLVM
            Reporter: Dmitry Pronichkin


The new HashMap implementation made by Tim Ellison came into collision with the following
problem: scalar replacement for HashMap.get(Integer.valueOf(..)) is not working. The reason
is that the Integer object is not scalarized because of "instanceof" instruction. But escape
analysis knows the real type of the key and it can evaluate "instanceof" making possible for
the key to be scalarized.

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