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eae4c5eece
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.
14 lines
680 B
Swift
14 lines
680 B
Swift
// RUN: %target-swift-frontend -typecheck -emit-module-interface-path %t.swiftinterface -enable-library-evolution -enable-experimental-differentiable-programming %s
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// RUN: %FileCheck %s < %t.swiftinterface
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import _Differentiation
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public func a(f: @differentiable (Float) -> Float) {}
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// CHECK: public func a(f: @differentiable (Swift.Float) -> Swift.Float)
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public func b(f: @differentiable(linear) (Float) -> Float) {}
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// CHECK: public func b(f: @differentiable(linear) (Swift.Float) -> Swift.Float)
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public func c(f: @differentiable (Float, @noDerivative Float) -> Float) {}
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// CHECK: public func c(f: @differentiable (Swift.Float, @noDerivative Swift.Float) -> Swift.Float)
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