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b90007a98c
Merge the AddressLowering pass from its old development branch and update it so we can begin incrementally enabling it under a flag. This has been reimplemented for simplicity. There's no point in looking at the old code.
52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
//===--- PhiStorageOptimizer.h - Phi storage optimizer --------------------===//
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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 - 2021 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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/// This file defines PhiStorageOptimizer, a utility for use with the
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/// mandatory AddressLowering pass.
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///
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//===----------------------------------------------------------------------===//
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#include "AddressLowering.h"
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#include "swift/SIL/SILArgument.h"
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#include "swift/SIL/SILBasicBlock.h"
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#include "swift/SIL/SILValue.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/SmallVector.h"
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namespace swift {
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class CoalescedPhi {
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friend class PhiStorageOptimizer;
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SmallVector<Operand *, 4> coalescedOperands;
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CoalescedPhi(const CoalescedPhi &) = delete;
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CoalescedPhi &operator=(const CoalescedPhi &) = delete;
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public:
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CoalescedPhi() = default;
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CoalescedPhi(CoalescedPhi &&) = default;
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CoalescedPhi &operator=(CoalescedPhi &&) = default;
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void coalesce(PhiValue phi, const ValueStorageMap &valueStorageMap);
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bool empty() const { return coalescedOperands.empty(); }
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ArrayRef<Operand *> getCoalescedOperands() const { return coalescedOperands; }
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SILInstruction::OperandValueRange getCoalescedValues() const {
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return SILInstruction::getOperandValues(getCoalescedOperands());
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}
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};
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} // namespace swift
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