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From "Mikhail Fursov (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HARMONY-5120) [drlvm][jit][opt] Replacing 32bit immediates with 8bit immediates where possible
Date Wed, 14 Nov 2007 11:36:43 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-5120?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mikhail Fursov updated HARMONY-5120:
------------------------------------

    Estimated Complexity: Advanced
                 Summary: [drlvm][jit][opt] Replacing 32bit immediates with 8bit immediates
where possible  (was: [drlvm][jitrino] replacing 32bit immediates with 8bit immediates where
possible)

> [drlvm][jit][opt] Replacing 32bit immediates with 8bit immediates where possible
> --------------------------------------------------------------------------------
>
>                 Key: HARMONY-5120
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5120
>             Project: Harmony
>          Issue Type: Improvement
>          Components: DRLVM
>         Environment: IA32
>            Reporter: Dmitry Pronichkin
>            Assignee: Mikhail Fursov
>         Attachments: imm8.patch
>
>
> If immediate operand fits 8bit size it's better to encode the instruction using 8-bit
immediate, because we decrease code size by 3 bytes every such instruction.

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