| // RUN: %target-swift-frontend -emit-silgen %s | %target-sil-opt | %FileCheck %s |
| |
| // Test SIL differentiability witness SIL generation. |
| |
| // Test public non-generic function. |
| // SIL differentiability witness: |
| // - Has public linkage (implicit). |
| // - Has no `where` clause. |
| |
| public func foo(_ x: Float) -> Float { x } |
| |
| @differentiating(foo) |
| public func foo_jvp(_ x: Float) -> (value: Float, differential: (Float) -> Float) { |
| (x, { $0 }) |
| } |
| |
| @differentiating(foo) |
| public func foo_vjp(_ x: Float) -> (value: Float, pullback: (Float) -> Float) { |
| (x, { $0 }) |
| } |
| |
| // CHECK-LABEL: // differentiability witness for foo(_:) |
| // CHECK-NEXT: sil_differentiability_witness [parameters 0] [results 0] @$s36sil_differentiability_witness_silgen3fooyS2fF : $@convention(thin) (Float) -> Float { |
| // CHECK-NEXT: jvp: @AD__$s36sil_differentiability_witness_silgen3fooyS2fF__jvp_src_0_wrt_0 : $@convention(thin) (Float) -> (Float, @owned @callee_guaranteed (Float) -> Float) |
| // CHECK-NEXT: vjp: @AD__$s36sil_differentiability_witness_silgen3fooyS2fF__vjp_src_0_wrt_0 : $@convention(thin) (Float) -> (Float, @owned @callee_guaranteed (Float) -> Float) |
| // CHECK-NEXT: } |
| |
| // Test internal non-generic function. |
| // SIL differentiability witness: |
| // - Has hidden linkage. |
| // - Has no `where` clause. |
| // - Has only VJP. |
| |
| func bar<T>(_ x: Float, _ y: T) -> Float { x } |
| |
| @differentiating(bar) |
| public func bar_jvp<T>(_ x: Float, _ y: T) -> (value: Float, differential: (Float) -> Float) { |
| (x, { $0 }) |
| } |
| |
| // CHECK-LABEL: // differentiability witness for bar<A>(_:_:) |
| // CHECK-NEXT: sil_differentiability_witness hidden [parameters 0] [results 0] @$s36sil_differentiability_witness_silgen3baryS2f_xtlF : $@convention(thin) <T> (Float, @in_guaranteed T) -> Float { |
| // CHECK-NEXT: jvp: @AD__$s36sil_differentiability_witness_silgen3baryS2f_xtlF__jvp_src_0_wrt_0 : $@convention(thin) <τ_0_0> (Float, @in_guaranteed τ_0_0) -> (Float, @owned @callee_guaranteed (Float) -> Float) |
| // CHECK-NEXT: } |
| |
| // Test internal generic function. |
| // SIL differentiability witness: |
| // - Has hidden linkage. |
| // - Has `where` clause. |
| |
| @differentiable(where T: Differentiable) |
| func generic<T>(_ x: T, _ y: Float) -> T { x } |
| |
| @differentiating(generic) |
| func generic_jvp<T: Differentiable>(_ x: T, _ y: Float) -> ( |
| value: T, differential: (T.TangentVector, Float) -> T.TangentVector |
| ) { |
| (x, { dx, dy in dx }) |
| } |
| |
| @differentiating(generic) |
| func generic_vjp<T: Differentiable>(_ x: T, _ y: Float) -> ( |
| value: T, pullback: (T.TangentVector) -> (T.TangentVector, Float) |
| ) { |
| (x, { ($0, .zero) }) |
| } |
| |
| // CHECK-LABEL: // differentiability witness for generic<A>(_:_:) |
| // CHECK-NEXT: sil_differentiability_witness hidden [parameters 0 1] [results 0] [where T : _Differentiable] @$s36sil_differentiability_witness_silgen7genericyxx_SftlF : $@convention(thin) <T> (@in_guaranteed T, Float) -> @out T { |
| // CHECK-NEXT: jvp: @AD__$s36sil_differentiability_witness_silgen7genericyxx_SftlF__jvp_src_0_wrt_0_1 : $@convention(thin) <τ_0_0 where τ_0_0 : _Differentiable> (@in_guaranteed τ_0_0, Float) -> (@out τ_0_0, @owned @callee_guaranteed (@in_guaranteed τ_0_0.TangentVector, Float) -> @out τ_0_0.TangentVector) |
| // CHECK-NEXT: vjp: @AD__$s36sil_differentiability_witness_silgen7genericyxx_SftlF__vjp_src_0_wrt_0_1 : $@convention(thin) <τ_0_0 where τ_0_0 : _Differentiable> (@in_guaranteed τ_0_0, Float) -> (@out τ_0_0, @owned @callee_guaranteed (@in_guaranteed τ_0_0.TangentVector) -> (@out τ_0_0.TangentVector, Float)) |
| // CHECK-NEXT: } |
| |
| public struct Foo: Differentiable { |
| public var x: Float |
| |
| @differentiable |
| public init(_ x: Float) { |
| self.x = x |
| } |
| |
| // CHECK-LABEL: // differentiability witness for Foo.init(_:) |
| // CHECK-NEXT: sil_differentiability_witness [parameters 0] [results 0] @$s36sil_differentiability_witness_silgen3FooVyACSfcfC : $@convention(method) (Float, @thin Foo.Type) -> Foo { |
| // CHECK-NEXT: } |
| |
| @differentiable |
| public func method() -> Float { |
| x |
| } |
| |
| // CHECK-LABEL: // differentiability witness for Foo.method() |
| // CHECK-NEXT: sil_differentiability_witness [parameters 0] [results 0] @$s36sil_differentiability_witness_silgen3FooV6methodSfyF : $@convention(method) (Foo) -> Float { |
| // CHECK-NEXT: } |
| |
| @differentiable |
| public var computedProperty: Float { |
| x |
| } |
| |
| // CHECK-LABEL: // differentiability witness for Foo.computedProperty.getter |
| // CHECK-NEXT: sil_differentiability_witness [parameters 0] [results 0] @$s36sil_differentiability_witness_silgen3FooV16computedPropertySfvg : $@convention(method) (Foo) -> Float { |
| // CHECK-NEXT: } |
| |
| @differentiable |
| public subscript() -> Float { |
| x |
| } |
| |
| // CHECK-LABEL: // differentiability witness for Foo.subscript.getter |
| // CHECK-NEXT: sil_differentiability_witness [parameters 0] [results 0] @$s36sil_differentiability_witness_silgen3FooVSfycig : $@convention(method) (Foo) -> Float { |
| // CHECK-NEXT: } |
| } |