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From "Mikhail Fursov (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-3911) [DRLVM][JIT] wrong array element size calculated for allocArray helper inlining
Date Fri, 18 May 2007 12:41:16 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-3911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12496864
] 

Mikhail Fursov commented on HARMONY-3911:
-----------------------------------------

Yu-Nan, could you attach the server.emconf file you use.

The one we have in our SVN contains obsolete configuration for gc_cc like:
   -XX:jit.SD2_OPT.arg.optimizer.inline_helpers.newObj_className=org/apache/harmony/drlvm/gc_cc/GCHelper

It must be fixed ASAP: we need to turn gc helpers inlining in server mode off  or put gc_gen
helper names.



> [DRLVM][JIT] wrong array element size calculated for allocArray helper inlining
> -------------------------------------------------------------------------------
>
>                 Key: HARMONY-3911
>                 URL: https://issues.apache.org/jira/browse/HARMONY-3911
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>         Environment: windows and linux
>            Reporter: Yu-Nan He
>
> During the investigation of HARMONY-3899, I found the failure is caused by a wrong array
element size passed to GC. 
> When running
> java -Xmx1500M -Xms1500M -Xem:server -XX:vm.dlls=gc_gen.dll -XX:gc.use_large_page=true
-cp . Harness -n 10 hsqldb 
> in some iteration, allocArray helper is invoked to create an array of [Z type with length
of 13. But the element size is set to be 4 (for one Byte). Then the calculated array object
size is wrong. 
> It would be great if some JIT guru can help to fix it. Thanks.

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