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Date: Sun, 22 Jul 2007 22:41:31 -0700 (PDT)
From: "Egor Pasko (JIRA)" <jira@apache.org>
To: commits@harmony.apache.org
Subject: [jira] Updated: (HARMONY-4476) [drlvm][jit][opt][abcd] Two-state
 Inequality Graph for both Lower and Upper problems, to ensure correctness
 and simplify the code, ability to dump stats
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     [ https://issues.apache.org/jira/browse/HARMONY-4476?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Egor Pasko updated HARMONY-4476:
--------------------------------

    Attachment: 0002-uint32-ids-for-IOpndProxy.txt

uint64 -> uint32, cannot even remember, why I wrote them as uint64..
comment fixed as well

both patches in the queue need to be committed

> [drlvm][jit][opt][abcd] Two-state Inequality Graph for both Lower and Upper problems, to ensure correctness and simplify the code, ability to dump stats
> --------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-4476
>                 URL: https://issues.apache.org/jira/browse/HARMONY-4476
>             Project: Harmony
>          Issue Type: Improvement
>          Components: DRLVM
>         Environment: all
>            Reporter: Egor Pasko
>         Attachments: 0001-Two-state-Inequality-Graph-with-ABCD-Stats-option.txt, 0002-uint32-ids-for-IOpndProxy.txt, igraph.png
>
>
> Creating two Inequality Graphs makes it difficult to make sure the graph looks like the right one. This issue proposes to create two-state InequalityGraph. One state shall represent the upper-bound problem, the other -- lower-bound. Constraints arising from statements like "a=b", "a=b+const" are the same in both states of the graph, whereas constraints arising from statements like "if (a < b)" are different (basically, the edges change direction to the opposite and negate their length)

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