[pypy-dev] translation error on jit.unroll_safe with jit_libffi

[Maciej Fijalkowski]

I would not be surprised if static methods are simply unsupported by
the JIT (but likely for no good reason)

On Sat, Oct 25, 2014 at 12:37 AM, Timothy Baldridge
<tbaldridge at gmail.com> wrote:
> I'm in the process of adding FFI to pixie. It translates and runs fine (I'm
> sure there's still bugs). But the trace is a bit verbose, so I decided I'd
> unroll the loop that packs the arguments in the exchange buffer. However
> then I get this error:
>
> [translation:info]    File "<388-codegen
> /Users/tim/oss-not-dropbox/externals/pypy/rpython/rtyper/rtyper.py:540>",
> line 4, in translate_op_call_args
> [translation:info]     return r_arg1.rtype_call_args(hop)
> [translation:info]    File
> "/Users/tim/oss-not-dropbox/externals/pypy/rpython/rtyper/rpbc.py", line
> 659, in rtype_call_args
> [translation:info]     return self.redispatch_call(hop, call_args=True)
> [translation:info]    File
> "/Users/tim/oss-not-dropbox/externals/pypy/rpython/rtyper/rpbc.py", line
> 686, in redispatch_call
> [translation:info]     hop.llops, hop)
> [translation:info]    File
> "/Users/tim/oss-not-dropbox/externals/pypy/rpython/rtyper/rclass.py", line
> 1075, in rtype_new_instance
> [translation:info]     return rinstance.new_instance(llops, classcallhop)
> [translation:info]    File
> "/Users/tim/oss-not-dropbox/externals/pypy/rpython/rtyper/rclass.py", line
> 715, in new_instance
> [translation:info]     r.convert_desc_or_const(value))
> [translation:info]    File
> "/Users/tim/oss-not-dropbox/externals/pypy/rpython/rtyper/rmodel.py", line
> 115, in convert_desc_or_const
> [translation:info]     return self.convert_const(desc_or_const.value)
> [translation:info]    File
> "/Users/tim/oss-not-dropbox/externals/pypy/rpython/rtyper/lltypesystem/rpbc.py",
> line 158, in convert_const
> [translation:info]     funcdesc =
> self.rtyper.annotator.bookkeeper.getdesc(value)
> [translation:info]    File
> "/Users/tim/oss-not-dropbox/externals/pypy/rpython/annotator/bookkeeper.py",
> line 396, in getdesc
> [translation:info]     raise Exception("%s: %r" % (msg, pyobj))
> [translation:ERROR] Exception: unexpected prebuilt constant: <staticmethod
> object at 0x10a8d5bb0>
>
> The line I'm un-commenting is here:
> https://github.com/pixie-lang/pixie/blob/master/pixie/vm/libs/ffi.py#L150
>
> From what I can tell this bug is from the translator trying to do something
> with the static methods in CallDescr. Why this is happening, I haven't a
> clue.
>
> Timothy
>
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