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From "Nikolay Sidelnikov (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HARMONY-2686) [drlvm][jit][opt] Jitrino doesn't remove unnesassary conditional jumps after constants compare
Date Wed, 10 Jan 2007 06:30:28 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-2686?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Nikolay Sidelnikov updated HARMONY-2686:
----------------------------------------

    Attachment:     (was: BranchTranslator_v1.2.patch)

> [drlvm][jit][opt] Jitrino doesn't remove unnesassary conditional jumps after constants
compare
> ----------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-2686
>                 URL: https://issues.apache.org/jira/browse/HARMONY-2686
>             Project: Harmony
>          Issue Type: Improvement
>          Components: DRLVM
>            Reporter: Nikolay Sidelnikov
>         Assigned To: Alexey Petrenko
>         Attachments: BranchTranslator_v1.4.patch, btr_fix.patch
>
>
> There are number of  cases when Jitrino is able to remove a branch. For example:
> 1)
>        MOV eax, 1
>        CMP eax, 0
>        JZ 
> 2)
>        MOV eax, 1
>        JMP L1
>        MOV eax, 0
> L1: CMP eax, 0
>        JZ

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