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From "Nikolay Sidelnikov (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-1774) [drlvm][unit] Classlib test org.apache.harmony.luni.tests.java.lang.LongTest fails in OPT mode
Date Wed, 11 Oct 2006 11:57:21 GMT
    [ http://issues.apache.org/jira/browse/HARMONY-1774?page=comments#action_12441429 ] 
            
Nikolay Sidelnikov commented on HARMONY-1774:
---------------------------------------------

The problem is in RCE (redundant comparison elimination) optimization and I8Lowerer incompatibility.

I8Lowerer produces two jumps depend on one comparison. RCE takes into account only first of
it and consider comparison as redundant. 

I propose to fix I8Lowerer to make produced code to be more unified for further optimizations.

> [drlvm][unit] Classlib test org.apache.harmony.luni.tests.java.lang.LongTest fails in
OPT mode
> ----------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-1774
>                 URL: http://issues.apache.org/jira/browse/HARMONY-1774
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Elena Semukhina
>         Attachments: TestFileChannel.java, TestLong.java, TestLong2.java
>
>
> 5 test methods in this test fail OPT mode while pass in JET. 
> > java -showversion 
> Apache Harmony Launcher : (c) Copyright 1991, 2006 The Apache Software Foundatio 
> n or its licensors, as applicable. 
> java version "1.5.0" 
> pre-alpha : not complete or compatible 
> svn = r454267, (Oct 9 2006), Windows/ia32/msvc 1310, debug build 
> http://incubator.apache.org/harmony 
> I'll attach a simple test to reproduce the issue. 

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