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1308fc69c5
Previously, two conditions were necessary to enable differentiable programming: - Using the `-enable-experimental-differentiable-programming` frontend flag. - Importing the `_Differentiation` module. Importing the `_Differentiation` module is the true condition because it contains the required compiler-known `Differentiable` protocol. The frontend flag is redundant and cumbersome. Now, the frontend flag is removed. Importing `_Differentiation` is the only condition.
83 lines
5.5 KiB
Swift
83 lines
5.5 KiB
Swift
// RUN: %target-swift-frontend -emit-silgen %s | %FileCheck %s
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import _Differentiation
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@_silgen_name("triggerReabstraction1")
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func triggerReabstraction1<T: Differentiable>(_ f: @escaping @differentiable (T) -> T) {}
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@_silgen_name("triggerReabstraction2")
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func triggerReabstraction2<T>(_ t: T) {}
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@_silgen_name("differentiable1")
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func differentiable1(_ x: Float) -> Float { x }
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@_silgen_name("differentiable2")
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func differentiable2<T: Differentiable>(_ t: T) -> T { t }
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@_silgen_name("makeSignatureAbstract")
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func makeSignatureAbstract() {
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triggerReabstraction1(differentiable1)
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}
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// CHECK-LABEL: sil{{.*}}@makeSignatureAbstract
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// CHECK: [[BEFORE:%.*]] = differentiable_function [parameters 0]
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// CHECK: [[BEFORE_BORROWED:%.*]] = begin_borrow [[BEFORE]]
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// CHECK: [[ORIG_0:%.*]] = differentiable_function_extract [original] [[BEFORE_BORROWED]]
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// CHECK: [[ORIG_1:%.*]] = copy_value [[ORIG_0]]
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// CHECK: [[ORIG_THUNK:%.*]] = function_ref {{.*}} : $@convention(thin) (@in_guaranteed Float, @guaranteed @callee_guaranteed (Float) -> Float) -> @out Float
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// CHECK: [[ORIG_2:%.*]] = partial_apply [callee_guaranteed] [[ORIG_THUNK]]([[ORIG_1]])
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// CHECK: [[ORIG_3:%.*]] = convert_function [[ORIG_2]]
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// CHECK: [[JVP_0:%.*]] = differentiable_function_extract [jvp] [[BEFORE_BORROWED]]
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// CHECK: [[JVP_1:%.*]] = copy_value [[JVP_0]]
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// CHECK: [[JVP_THUNK:%.*]] = function_ref {{.*}} : $@convention(thin) (@in_guaranteed Float, @guaranteed @callee_guaranteed (Float) -> (Float, @owned @callee_guaranteed (Float) -> Float)) -> (@out Float, @owned @callee_guaranteed @substituted <τ_0_0, τ_0_1> (@in_guaranteed τ_0_0) -> @out τ_0_1 for <Float, Float>)
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// CHECK: [[JVP_2:%.*]] = partial_apply [callee_guaranteed] [[JVP_THUNK]]([[JVP_1]])
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// CHECK: [[JVP_3:%.*]] = convert_function [[JVP_2]]
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// CHECK: [[VJP_0:%.*]] = differentiable_function_extract [vjp] [[BEFORE_BORROWED]]
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// CHECK: [[VJP_1:%.*]] = copy_value [[VJP_0]]
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// CHECK: [[VJP_THUNK:%.*]] = function_ref {{.*}} : $@convention(thin) (@in_guaranteed Float, @guaranteed @callee_guaranteed (Float) -> (Float, @owned @callee_guaranteed (Float) -> Float)) -> (@out Float, @owned @callee_guaranteed @substituted <τ_0_0, τ_0_1> (@in_guaranteed τ_0_0) -> @out τ_0_1 for <Float, Float>)
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// CHECK: [[VJP_2:%.*]] = partial_apply [callee_guaranteed] [[VJP_THUNK]]([[VJP_1]])
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// CHECK: [[VJP_3:%.*]] = convert_function [[VJP_2]]
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// CHECK: [[AFTER:%.*]] = differentiable_function [parameters 0] [[ORIG_3]] {{.*}} with_derivative {[[JVP_3]] {{.*}}, [[VJP_3]] {{.*}}}
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// CHECK: [[TRIGGER:%.*]] = function_ref @triggerReabstraction1
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// CHECK: apply [[TRIGGER]]<Float>([[AFTER]])
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@_silgen_name("makeOpaque")
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func makeOpaque() {
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let f: @differentiable (Float) -> Float = differentiable1
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triggerReabstraction2(f)
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}
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// CHECK-LABEL: sil{{.*}}@makeOpaque
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// CHECK: [[STACK_ADDR:%.*]] = alloc_stack $@differentiable @callee_guaranteed @substituted <τ_0_0, τ_0_1> (@in_guaranteed τ_0_0) -> @out τ_0_1 for <Float, Float>
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// CHECK: [[ORIG_0:%.*]] = differentiable_function_extract [original] [[BEFORE:%.*]] : $@differentiable @callee_guaranteed (Float) -> Float
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// CHECK: [[ORIG_1:%.*]] = copy_value [[ORIG_0]]
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// CHECK: [[ORIG_THUNK:%.*]] = function_ref {{.*}} : $@convention(thin) (@in_guaranteed Float, @guaranteed @callee_guaranteed (Float) -> Float) -> @out Float
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// CHECK: [[ORIG_2:%.*]] = partial_apply [callee_guaranteed] [[ORIG_THUNK]]([[ORIG_1]])
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// CHECK: [[ORIG_3:%.*]] = convert_function [[ORIG_2]]
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// CHECK: [[JVP_0:%.*]] = differentiable_function_extract [jvp] [[BEFORE]]
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// CHECK: [[JVP_1:%.*]] = copy_value [[JVP_0]]
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// CHECK: [[JVP_THUNK:%.*]] = function_ref {{.*}} : $@convention(thin) (@in_guaranteed Float, @guaranteed @callee_guaranteed (Float) -> (Float, @owned @callee_guaranteed (Float) -> Float)) -> (@out Float, @out @callee_guaranteed @substituted <τ_0_0, τ_0_1> (@in_guaranteed τ_0_0) -> @out τ_0_1 for <Float, Float>)
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// CHECK: [[JVP_2:%.*]] = partial_apply [callee_guaranteed] [[JVP_THUNK]]([[JVP_1]])
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// CHECK: [[JVP_3:%.*]] = convert_function [[JVP_2]]
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// CHECK: [[VJP_0:%.*]] = differentiable_function_extract [vjp] [[BEFORE]]
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// CHECK: [[VJP_1:%.*]] = copy_value [[VJP_0]]
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// CHECK: [[VJP_THUNK:%.*]] = function_ref {{.*}} : $@convention(thin) (@in_guaranteed Float, @guaranteed @callee_guaranteed (Float) -> (Float, @owned @callee_guaranteed (Float) -> Float)) -> (@out Float, @out @callee_guaranteed @substituted <τ_0_0, τ_0_1> (@in_guaranteed τ_0_0) -> @out τ_0_1 for <Float, Float>)
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// CHECK: [[VJP_2:%.*]] = partial_apply [callee_guaranteed] [[VJP_THUNK]]([[VJP_1]])
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// CHECK: [[VJP_3:%.*]] = convert_function [[VJP_2]]
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// CHECK: [[AFTER:%.*]] = differentiable_function [parameters 0] [[ORIG_3]] {{.*}} with_derivative {[[JVP_3]] {{.*}}, [[VJP_3]] {{.*}}}
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// CHECK: store [[AFTER]] to [init] [[STACK_ADDR]]
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// CHECK: [[TRIGGER:%.*]] = function_ref @triggerReabstraction2
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// CHECK: apply [[TRIGGER]]<@differentiable (Float) -> Float>([[STACK_ADDR]])
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@_silgen_name("makeSignatureDirect")
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func makeSignatureDirect() {
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let _: @differentiable (Float) -> Float = differentiable2
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}
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// CHECK-LABEL: sil{{.*}}@makeSignatureDirect
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// CHECK: [[ORIG_0:%.*]] = function_ref @differentiable2
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// CHECK: [[ORIG_1:%.*]] = partial_apply [callee_guaranteed] [[ORIG_0]]<Float>()
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// CHECK: [[THUNK:%.*]] = function_ref {{.*}} : $@convention(thin) (Float, @guaranteed @callee_guaranteed (@in_guaranteed Float) -> @out Float) -> Float
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// CHECK: [[ORIG_2:%.*]] = partial_apply [callee_guaranteed] [[THUNK]]([[ORIG_1]])
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// CHECK: differentiable_function [parameters 0] [[ORIG_2]]
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