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92116ba4b8
This just creates a new SILUndef with the same type as the SILValue. This just prevents one from having to write SILUndef::get(value->getType(), *value->getModule()).
61 lines
1.7 KiB
C++
61 lines
1.7 KiB
C++
//===--- SILUndef.h - SIL Undef Value Representation ------------*- 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) 2014 - 2017 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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#ifndef SWIFT_SIL_UNDEF_H
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#define SWIFT_SIL_UNDEF_H
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#include "swift/Basic/Compiler.h"
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#include "swift/SIL/SILValue.h"
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namespace swift {
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class SILArgument;
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class SILInstruction;
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class SILModule;
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class SILUndef : public ValueBase {
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SILUndef(SILType type);
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public:
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void operator=(const SILArgument &) = delete;
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void operator delete(void *, size_t) = delete;
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static SILUndef *get(SILType ty, SILModule &m);
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/// Return a SILUndef with the same type as the passed in value.
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static SILUndef *get(SILValue value) {
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return SILUndef::get(value->getType(), *value->getModule());
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}
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static SILUndef *get(SILType ty, const SILFunction &f);
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template <class OwnerTy>
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static SILUndef *getSentinelValue(SILType type, OwnerTy owner) {
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// Ownership kind isn't used here, the value just needs to have a unique
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// address.
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return new (*owner) SILUndef(type);
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}
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ValueOwnershipKind getOwnershipKind() const { return OwnershipKind::None; }
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static bool classof(const SILArgument *) = delete;
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static bool classof(const SILInstruction *) = delete;
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static bool classof(SILNodePointer node) {
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return node->getKind() == SILNodeKind::SILUndef;
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}
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};
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} // end swift namespace
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#endif
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