[llvm-dev] [Coroutine] Why clang commit parameters of coroutine funtion to Stmt Body?

[Dong Axis via llvm-dev]

Hello Everyone,

      I have a question about coroutine function.
      There are some code in clang:

       I do not know why coroutine function copy parameters to stmt body.
       Dose anyone can explain it?

       Thanks in advance.

Best Regards
David Dong
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