Problems with vdefault/vwithfield

Tobias Hartmann tobias.hartmann at oracle.com
Mon Feb 6 13:00:45 UTC 2017


Hi,

Mr. Simms pointed out that in GenerateOopMap::interp1() me may have to pop arguments for vwithdefault. But then we would need to do the same with vnew. I'm not too familiar with that code, Fred, could you have a look?

Thanks,
Tobias

On 06.02.2017 13:39, Tobias Hartmann wrote:
> Hi,
> 
> please review the following fix:
> http://cr.openjdk.java.net/~thartmann/valhalla/vt_prototype/webrev.06/
> 
> We hit a ShouldNotReachHere in GenerateOopMap::interp1() with "unexpected opcode: 215" because the _vwithfield bytecode is not known. I fixed the same problem in MethodLiveness::BasicBlock::compute_gen_kill_single() and BCEscapeAnalyzer::iterate_one_block() and modified the tests to trigger this.
> 
> Thanks,
> Tobias
> 


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