Issue with a "Deoptimize not in a block", and method invalidation/re-optimization

[Thomas Wuerthinger]

Thanks for providing the test cases. We will look into the two issues.

Independent of the issues: The node number "25893" seems to indicate that you should consider reducing the graph size by putting the @SlowPath annotation on methods that should not to be on the fast path.

- thomas

On Oct 11, 2013, at 6:31 PM, Stefan Marr <Stefan.Marr at vub.ac.be> wrote:

> Hi:
> 
> I spent some time on 'trufflizing' TruffleSOM, i.e., I tried to use the Truffle-DSL to a larger extend and I tried to avoid manually evaluating nodes were the DSL should be able to do the work.
> 
> However, I am now running into issues with Graal, which I haven't been able to track down.
> 
> The first issue is the following exception: "SchedulingError: 25893|Deoptimize should already have been placed in a block".
> Looking at the graph of nodes and the stack in the debugger does unfortunately not help me with figuring out where that Deoptimize is coming from. The reason of the Deopt was set to something like "Null Check Exception", if I remember correctly.
> 
> How could I go about to figure out where that's coming from?
> 
> Another issues is with a specific benchmark [2]. Here I have methods that get constantly invalidated and optimized again.
> Any tips on how to trace these issues down would be greatly appreciate.
> 
> Thanks a lot
> Stefan
> 
> 
> 
> The code is available via:
>  git clone --recursive https://github.com/smarr/TruffleSOM.git
>  cd TruffleSOM
>  ant tests
> 
> 
> [1] ./mx.sh --vm server vm -Xbootclasspath/a:$SOM/build/classes:$SOM/libs/com.oracle.truffle.api.jar:$SOM/libs/com.oracle.truffle.api.dsl.jar som.vm.Universe -cp $SOM/Smalltalk $SOM/Examples/Benchmarks/All.som
> 
> [2] ./mx.sh --vm server vm -Xbootclasspath/a:$SOM/build/classes:$SOM/libs/com.oracle.truffle.api.jar:$SOM/libs/com.oracle.truffle.api.dsl.jar som.vm.Universe -cp $SOM/Smalltalk $SOM/Examples/Benchmarks/List.som
> 
> 
> 
> -- 
> Stefan Marr
> Software Languages Lab
> Vrije Universiteit Brussel
> Pleinlaan 2 / B-1050 Brussels / Belgium
> http://soft.vub.ac.be/~smarr
> Phone: +32 2 629 2974
> Fax:   +32 2 629 3525
>