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From "Nikolay Kurtov (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-5595) [drlvm][jitrino]Difference in bc-mapping after translator
Date Wed, 12 Mar 2008 09:00:46 GMT
[drlvm][jitrino]Difference in bc-mapping after translator
---------------------------------------------------------

                 Key: HARMONY-5595
                 URL: https://issues.apache.org/jira/browse/HARMONY-5595
             Project: Harmony
          Issue Type: Bug
          Components: DRLVM
         Environment: All
            Reporter: Nikolay Kurtov


Discussion on mailing list:
http://www.mail-archive.com/dev@harmony.apache.org/msg13158.html


I compiled the same class with JET and OPT, and found a difference in bytecode-mapping

One of branches of switch goes to this code:
;;  58) ILOAD_0                            
;;  59) BIPUSH          45                 
;;  61) IADD                               
;;  62) I2B                                
;;  63) ISTORE_1                           
....
So, after the recompilation by OPT, the block should begin from bcOffset 58

In OPT after translator I found in irdump the following block
Block L5: 
  Predecessors: ENTRY_L0
  Successors: L8
  I5:L5: bcmap:59
  I34:ldci4     #45 -) t14:int32
  I35:add   t1, t14 -) t15:int32
  I36:convi1  t15 -) t16:int32
  I37:stvar     t16 -) v1:int32
....

The block begins from bcOffset 59
I consider these values in JET and OPT should be equal.

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