pytorch

86b1afa0 - Assert that kernels are called with the right signature (#40251)

Assert that kernels are called with the right signature (#40251) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/40251 Rather than segfaulting, we should show a good error message when in op.call<Return, Args...>(...) the Return type or Args types mismatch the kernel. This adds an assertion comparing two std::type_index to the call path, but that should be fast. Hashing the function signature is also in the call path and not strictly constexpr, but I checked on godbolt that GCC >=5 and Clang >=3.8 optimize it away and make it constexpr, i.e. it's not part of the assembly. ghstack-source-id: 106194240 Test Plan: waitforsandcastle Differential Revision: D22126701 fbshipit-source-id: 6c908a822e295757bcc0014f78f51e6a560f221f