bors-servo d1295e9e7d Auto merge of #8040 - froydnj:codegen-arg-info, r=jdm ...

generate JIT argument type information for methods

This enhances `CodegenRust.py` to output `JSTypedMethodJitInfo` structures where appropriate.  This brings a notable speedup to tests like Dromaeo's `dom-attr/getAttribute`, which improves by several orders of magnitude with these patches applied.

If there are tricks for addressing the XXX comments, I would appreciate hearing them.

I think this addresses all of #6904.

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2015-10-28 01:06:06 +05:30

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