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c9bb5161a1
This is in preparation for verifying that when ownership verification is enabled that only enums and trivial values can have any ownership. I am doing this in preparation for eliminating ValueOwnershipKind::Trivial. rdar://46294760
35 lines
1.1 KiB
C++
35 lines
1.1 KiB
C++
//===--- SILUndef.cpp -----------------------------------------------------===//
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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) 2014 - 2018 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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#include "swift/SIL/SILUndef.h"
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#include "swift/SIL/SILModule.h"
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using namespace swift;
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static ValueOwnershipKind getOwnershipKindForUndef(SILType type, SILModule &m) {
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if (type.isTrivial(m))
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return ValueOwnershipKind::Trivial;
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return ValueOwnershipKind::Owned;
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}
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SILUndef::SILUndef(SILType type, SILModule &m)
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: ValueBase(ValueKind::SILUndef, type, IsRepresentative::Yes),
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ownershipKind(getOwnershipKindForUndef(type, m)) {}
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SILUndef *SILUndef::get(SILType ty, SILModule &m) {
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// Unique these.
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SILUndef *&entry = m.UndefValues[ty];
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if (entry == nullptr)
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entry = new (m) SILUndef(ty, m);
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return entry;
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}
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