[PATCH] D77954: [CUDA][HIP] Fix overload resolution issue for device host functions

Sat Apr 11 14:24:18 PDT 2020

yaxunl added a comment.

In D77954#1976294 <https://reviews.llvm.org/D77954#1976294>, @rjmccall wrote:

> If `nvcc` ignores host/device-ness when selecting overloads, that's probably the specified behavior, right?  I agree that it would be better to not ignore it, but Clang shouldn't just make up better rules for languages with external specifications.

cuda-clang does not always follow nvcc's behavior. For example, cuda-clang only allows incomplete array type for extern shared variables, whereas nvcc allows other types. If cuda-clang is supposed to follow nvcc's behavior in every aspects, we should approve https://reviews.llvm.org/D73979 , but it is not the case.

Therefore, I think we should discuss whether this is really a bug, and whether the fix can cause any unwanted side effect.

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D77954/new/

https://reviews.llvm.org/D77954