mirror of
https://github.com/apple/swift.git
synced 2025-12-21 12:14:44 +01:00
6466da193f
This is using LLVM's SSAUpdater utility. I had to abstract it a little further because our 'phi' nodes are slightly different. The SSAUpdater needs to iterate over phis in a basic block so I abstracted this in a trait. Therefore, this commit needs a recent version of puzzle/master which has this change applied. Swift SVN r19634
46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
//===--- SILUndef.h - SIL Undef Value Representation ------------*- C++ -*-===//
|
|
//
|
|
// This source file is part of the Swift.org open source project
|
|
//
|
|
// Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
|
|
// Licensed under Apache License v2.0 with Runtime Library Exception
|
|
//
|
|
// See http://swift.org/LICENSE.txt for license information
|
|
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef SWIFT_SIL_UNDEF_H
|
|
#define SWIFT_SIL_UNDEF_H
|
|
|
|
#include "swift/SIL/SILValue.h"
|
|
|
|
namespace swift {
|
|
class SILModule;
|
|
|
|
class SILUndef : public ValueBase {
|
|
void operator=(const SILArgument &) = delete;
|
|
void operator delete(void *Ptr, size_t) = delete;
|
|
|
|
SILUndef(SILType Ty) : ValueBase(ValueKind::SILUndef, Ty) {}
|
|
public:
|
|
|
|
static SILUndef *get(SILType Ty, SILModule *M);
|
|
static SILUndef *get(SILType Ty, SILModule &M) { return get(Ty, &M); }
|
|
|
|
template<class OwnerTy>
|
|
static SILUndef *getSentinelValue(SILType Ty, OwnerTy Owner) { return new (*Owner) SILUndef(Ty); }
|
|
|
|
/// getType() is ok since this is known to only have one type.
|
|
SILType getType(unsigned i = 0) const { return ValueBase::getType(i); }
|
|
|
|
static bool classof(const ValueBase *V) {
|
|
return V->getKind() == ValueKind::SILUndef;
|
|
}
|
|
};
|
|
|
|
} // end swift namespace
|
|
|
|
#endif
|
|
|