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Posted to commits@harmony.apache.org by "Alexey Petrenko (JIRA)" <ji...@apache.org> on 2006/12/27 11:04:23 UTC

[jira] Assigned: (HARMONY-2686) [drlvm][jit][opt] Jitrino doesn't remove unnesassary conditional jumps after constants compare

     [ http://issues.apache.org/jira/browse/HARMONY-2686?page=all ]

Alexey Petrenko reassigned HARMONY-2686:
----------------------------------------

    Assignee: Alexey Petrenko

> [drlvm][jit][opt] Jitrino doesn't remove unnesassary conditional jumps after constants compare
> ----------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-2686
>                 URL: http://issues.apache.org/jira/browse/HARMONY-2686
>             Project: Harmony
>          Issue Type: Improvement
>          Components: DRLVM
>            Reporter: Nikolay Sidelnikov
>         Assigned To: Alexey Petrenko
>         Attachments: branchTranslator.patch, BranchTranslator_fixed.patch, BranchTranslator_v1.2.patch, BranchTranslator_v1.2.patch, BranchTranslator_v1.4.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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