The paper was implemented by commit b0386a515b60c (https://reviews.llvm.org/D46845) in LLVM 7.0. But it would be nice to have test coverage for desired properties of `insert_return_type`. Closes #99944
The paper was implemented by commit b0386a515b60c (https://reviews.llvm.org/D46845) in LLVM 7.0. But it would be nice to have test coverage for desired properties of `insert_return_type`. Closes #99944