marcrasi eae4c5eece [AutoDiff upstream] @differentiable function type sema (#30648) ...

Add type checking for `@differentiable` function types:
- Check that parameters and results conform to `Differentiable`.
- Implicitly conform parameters and results whose types are generic parameters
  to `Differentiable`.
- Upstream most of the differentiable_func_type_type_checking.swift test from
  `tensorflow` branch. A few function conversion tests have not been added
   because they depend on the `@differentiable` function conversion pipeline.

Diagnose gracefully when the `Differentiable` protocol is unavailable because
`_Differentiation` has not been imported.

Resolves TF-823 and TF-1219.

2020-03-26 23:28:02 -07:00

..

differentiation.swift

[AutoDiff upstream] @differentiable function type sema (#30648)

2020-03-26 23:28:02 -07:00