On Relaxing Musttail Prototype Requirements

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Since the musttail LLVM IR marker was added in 2014 and then surfaced as a frontend attribute in 2021 , we’ve had a lot more implementation experience with it. CPython has adopted it, GCC has implemented it in C++ and C, and the C committee is discussing the possibility of adding a similar feature under the name return goto ( n3266 ). Over the years, many folks have wondered why the Clang…

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