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From "Ilya Berezhniuk" <ilya.berezhn...@gmail.com>
Subject Re: svn commit: r610727 - in /harmony/enhanced/drlvm/trunk/vm/vmcore/src: class_support/Environment.cpp init/vm_properties.cpp
Date Thu, 10 Jan 2008 16:15:31 GMT
Generally JIT is ready for uncompressed+server mode, because it was tested a
bit.
Probably those tests touch the code which is not used usually, or some
changes were checked in after testing in this mode.
But I hope these problems in JIT can be fixed easily.

I agree with Mikhail; as uncompressed mode was set by default for testing
purpose, we'll revert the patch after gathering more bug statistics.

Thanks,
Ilya.

2008/1/10, Mikhail Loenko <mloenko@gmail.com>:
>
> We should revert it once we have more testing results. When we know
> all the failures we can continue bugfix for the uncompressed mode
>
> 2008/1/10, Gregory Shimansky <gshimansky@apache.org>:
> > Hello
> >
> > This switch to uncompressed references by default broke several
> > regression tests that run on JIT in server mode. For example running
> > test for H3228 crashes on assertion in JIT:
> >
> > #0  0x00002b5992689b75 in raise () from /lib64/libc.so.6
> > #1  0x00002b599268b060 in abort () from /lib64/libc.so.6
> > #2  0x00002b5992683246 in __assert_fail () from /lib64/libc.so.6
> > #3  0x00002aaaad23ab70 in Jitrino::HelperInliner::run (this=0xfd9fd0) at
> >
> /nfs/ims/proj/drl/mrt2/users/gregory/em64t/trunk/working_vm/vm/jitrino/src/optimizer/helper_inliner.cpp:207
> > #4  0x00002aaaad23b808 in Jitrino::HelperInlinerSession::_run
> > (this=0xfdef88, irm=@0xf4cc80) at
> >
> /nfs/ims/proj/drl/mrt2/users/gregory/em64t/trunk/working_vm/vm/jitrino/src/optimizer/helper_inliner.cpp:200
> > #5  0x00002aaaad27fb31 in Jitrino::OptPass::run (this=0xfdef88) at
> >
> /nfs/ims/proj/drl/mrt2/users/gregory/em64t/trunk/working_vm/vm/jitrino/src/optimizer/optpass.cpp:62
> > #6  0x00002aaaad137b0d in Jitrino::runPipeline (c=0x42410440) at
> >
> /nfs/ims/proj/drl/mrt2/users/gregory/em64t/trunk/working_vm/vm/jitrino/src/main/Jitrino.cpp:224
> > #7  0x00002aaaad137ba4 in Jitrino::compileMethod (cc=0x42410440) at
> >
> /nfs/ims/proj/drl/mrt2/users/gregory/em64t/trunk/working_vm/vm/jitrino/src/main/Jitrino.cpp:241
> > #8  0x00002aaaad137c54 in Jitrino::Jitrino::CompileMethod
> > (cc=0x42410440) at
> >
> /nfs/ims/proj/drl/mrt2/users/gregory/em64t/trunk/working_vm/vm/jitrino/src/main/Jitrino.cpp:258
> > <snip more stack frames>
> >
> > Looking at the helper_inliner.cpp:207 I see the following code:
> >
> > #ifdef _EM64T_
> >     assert(VMInterface::areReferencesCompressed());
> > #endif
> >
> > which probably means that it is just not ready for uncompressed
> > references mode. I want to ask JIT developers, whether it is easy to
> > quickly fix this, or should we revert switching to uncompressed
> > references as the default mode?
> >
> > smishura@apache.org said the following on 10.01.2008 12:13:
> > > Author: smishura
> > > Date: Thu Jan 10 01:12:41 2008
> > > New Revision: 610727
> > >
> > > URL: http://svn.apache.org/viewvc?rev=610727&view=rev
> > > Log:
> > > Apply patch from HARMONY-5355:
> > > [drlvm][object][testing] Change default references mode to
> uncompressed on x86-64
> > >
> > > Modified:
> > >
> harmony/enhanced/drlvm/trunk/vm/vmcore/src/class_support/Environment.cpp
> > >     harmony/enhanced/drlvm/trunk/vm/vmcore/src/init/vm_properties.cpp
> > >
> > > Modified:
> harmony/enhanced/drlvm/trunk/vm/vmcore/src/class_support/Environment.cpp
> > > URL:
> http://svn.apache.org/viewvc/harmony/enhanced/drlvm/trunk/vm/vmcore/src/class_support/Environment.cpp?rev=610727&r1=610726&r2=610727&view=diff
> > >
> ==============================================================================
> > > ---
> harmony/enhanced/drlvm/trunk/vm/vmcore/src/class_support/Environment.cpp
> (original)
> > > +++
> harmony/enhanced/drlvm/trunk/vm/vmcore/src/class_support/Environment.cpp Thu
> Jan 10 01:12:41 2008
> > > @@ -126,7 +126,7 @@
> > >      use_lil_stubs = true;
> > >  #ifdef REFS_USE_RUNTIME_SWITCH
> > >  #ifdef POINTER64
> > > -    compress_references = true;
> > > +    compress_references = false;
> > >  #else // POINTER64
> > >      compress_references = false;
> > >  #endif // POINTER64
> > >
> > > Modified:
> harmony/enhanced/drlvm/trunk/vm/vmcore/src/init/vm_properties.cpp
> > > URL:
> http://svn.apache.org/viewvc/harmony/enhanced/drlvm/trunk/vm/vmcore/src/init/vm_properties.cpp?rev=610727&r1=610726&r2=610727&view=diff
> > >
> ==============================================================================
> > > --- harmony/enhanced/drlvm/trunk/vm/vmcore/src/init/vm_properties.cpp
> (original)
> > > +++ harmony/enhanced/drlvm/trunk/vm/vmcore/src/init/vm_properties.cpp
> Thu Jan 10 01:12:41 2008
> > > @@ -303,7 +303,7 @@
> > >          properties.set_new("thread.soft_unreservation", "false");
> > >
> > >  #ifdef REFS_USE_RUNTIME_SWITCH
> > > -        properties.set_new("vm.compress_references", "true");
> > > +        properties.set_new("vm.compress_references", "false");
> > >  #endif
> > >
> > >          int n_api_dll_files = sizeof(api_dll_files) / sizeof(char *);
> > >
> > >
> >
> >
>

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