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From "Alexey Varlamov (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-5425) [drlvm][jit][opt] Spillgen ignores intitial constrains sometimes
Date Mon, 28 Jan 2008 07:35:34 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-5425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12563065#action_12563065
] 

Alexey Varlamov commented on HARMONY-5425:
------------------------------------------

Mikhail, the checkin does not include testCrossCallsLiveness() verification from the attached
patch - is it intentionally dropped?

> [drlvm][jit][opt] Spillgen ignores intitial constrains sometimes
> ----------------------------------------------------------------
>
>                 Key: HARMONY-5425
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5425
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Mikhail Fursov
>            Assignee: Mikhail Fursov
>         Attachments: spill.diff
>
>
> I found that in some scenarios with high register pressure (I can't neither publish the
sources or create a microtest) spillgen reassigns an operand from callee-save register to
caller-save making its value invalid after a CALL
> The problem method was originally found in a method: org/apache/harmony/awt/gl/Crossing::intersectCubic
> I apply the patch that fixes the problem.

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