| //===--- VJPCloner.h - VJP function generation ----------------*- C++ -*---===// |
| // |
| // This source file is part of the Swift.org open source project |
| // |
| // Copyright (c) 2019 - 2020 Apple Inc. and the Swift project authors |
| // Licensed under Apache License v2.0 with Runtime Library Exception |
| // |
| // See https://swift.org/LICENSE.txt for license information |
| // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines a helper class for generating VJP functions for automatic |
| // differentiation. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef SWIFT_SILOPTIMIZER_UTILS_DIFFERENTIATION_VJPCLONER_H |
| #define SWIFT_SILOPTIMIZER_UTILS_DIFFERENTIATION_VJPCLONER_H |
| |
| #include "swift/SILOptimizer/Analysis/DifferentiableActivityAnalysis.h" |
| #include "swift/SILOptimizer/Differentiation/DifferentiationInvoker.h" |
| #include "swift/SILOptimizer/Differentiation/LinearMapInfo.h" |
| #include "swift/SIL/LoopInfo.h" |
| |
| namespace swift { |
| namespace autodiff { |
| |
| class ADContext; |
| class PullbackCloner; |
| |
| /// A helper class for generating VJP functions. |
| class VJPCloner final { |
| class Implementation; |
| Implementation &impl; |
| |
| public: |
| /// Creates a VJP cloner. |
| /// |
| /// The parent VJP cloner stores the original function and an empty |
| /// to-be-generated pullback function. |
| explicit VJPCloner(ADContext &context, SILFunction *original, |
| SILDifferentiabilityWitness *witness, SILFunction *vjp, |
| DifferentiationInvoker invoker); |
| ~VJPCloner(); |
| |
| ADContext &getContext() const; |
| SILModule &getModule() const; |
| SILFunction &getOriginal() const; |
| SILFunction &getVJP() const; |
| SILFunction &getPullback() const; |
| SILDifferentiabilityWitness *getWitness() const; |
| AutoDiffConfig getConfig() const; |
| DifferentiationInvoker getInvoker() const; |
| LinearMapInfo &getPullbackInfo() const; |
| SILLoopInfo *getLoopInfo() const; |
| const DifferentiableActivityInfo &getActivityInfo() const; |
| |
| /// Performs VJP generation on the empty VJP function. Returns true if any |
| /// error occurs. |
| bool run(); |
| }; |
| |
| } // end namespace autodiff |
| } // end namespace swift |
| |
| #endif // SWIFT_SILOPTIMIZER_UTILS_DIFFERENTIATION_VJPCLONER_H |