effect of goto on C++ compiler optimization

What are the performance benefits or penalties of using goto with a modern C++ compiler?

I am writing a C++ code generator and use of goto will make it easier to write. No one will touch the resulting C++ files so don't get all "goto is bad" on me. As a benefit, they save the use of temporary variables.

I was wondering, from a purely compiler optimization perspective, the result that goto has on the compiler's optimizer? Does it make code faster, slower, or generally no change in performance compared to using temporaries / flags.