llvm-project

ad422cd1 - [flang][cuda] Handle Constant and Shared attributes in CUDA generic matching distance (#201451)

[flang][cuda] Handle Constant and Shared attributes in CUDA generic matching distance (#201451) The CUDA generic resolution matching distance function did not handle actual arguments with the `Constant` or `Shared` data attribute. These attributes represent device memory but were unhandled, causing the distance to fall through to infinity. Under `-gpu=mem:unified`, this led to spurious ambiguity errors when multiple specifics (e.g. host-to-device and device-to-device overloads) both became candidates with tied infinite distances. Treat Constant and Shared actuals the same as Device in the matching distance table, since all three reside in device memory.