idea: tail duplication during code-gen

[seth.b...@microsoft.com]

Hello,

I've written a document describing an idea for improving the performance of interpreters compiled to WebAssembly. I'd appreciate any feedback, and I'm especially interested in whether the compiler-backend experts in the group consider this approach to be safe.

https://docs.google.com/document/d/14QinUA-HpixgsqGZCupXiltJg2mIGPDWAagK3kSncBQ/edit?usp=sharing

Thanks!