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71 lines
2.3 KiB
C++
71 lines
2.3 KiB
C++
//===--- AdjointValue.h - Helper class for differentiation ----*- C++ -*---===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2019 - 2020 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// AdjointValue - a symbolic representation for adjoint values enabling
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// efficient differentiation by avoiding zero materialization.
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//
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "differentiation"
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#include "swift/SILOptimizer/Differentiation/AdjointValue.h"
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void swift::autodiff::AdjointValue::print(llvm::raw_ostream &s) const {
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switch (getKind()) {
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case AdjointValueKind::Zero:
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s << "Zero[" << getType() << ']';
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break;
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case AdjointValueKind::Aggregate:
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s << "Aggregate[" << getType() << "](";
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if (auto *decl = getType().getASTType()->getStructOrBoundGenericStruct()) {
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interleave(
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llvm::zip(decl->getStoredProperties(), getAggregateElements()),
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[&s](std::tuple<VarDecl *, const AdjointValue &> elt) {
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s << std::get<0>(elt)->getName() << ": ";
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std::get<1>(elt).print(s);
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},
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[&s] { s << ", "; });
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} else if (getType().is<TupleType>()) {
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interleave(
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getAggregateElements(),
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[&s](const AdjointValue &elt) { elt.print(s); }, [&s] { s << ", "; });
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} else {
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llvm_unreachable("Invalid aggregate");
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}
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s << ')';
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break;
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case AdjointValueKind::Concrete:
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s << "Concrete[" << getType() << "](" << base->value.concrete << ')';
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break;
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case AdjointValueKind::AddElement:
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auto *addElementValue = getAddElementValue();
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auto baseAdjoint = addElementValue->baseAdjoint;
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auto eltToAdd = addElementValue->eltToAdd;
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s << "AddElement[";
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baseAdjoint.print(s);
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s << ", Field(";
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if (addElementValue->isTupleAdjoint()) {
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s << addElementValue->getFieldIndex();
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} else {
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s << addElementValue->getFieldDecl()->getNameStr();
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}
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s << "), ";
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eltToAdd.print(s);
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s << "]";
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break;
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}
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}
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