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94 lines
2.4 KiB
C++
94 lines
2.4 KiB
C++
//===--- DominanceAnalysis.h - SIL Dominance Analysis -*- 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 - 2015 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 http://swift.org/LICENSE.txt for license information
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// See http://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_SILANALYSIS_DOMINANCEANALYSIS_H
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#define SWIFT_SILANALYSIS_DOMINANCEANALYSIS_H
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#include "swift/SIL/SILInstruction.h"
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#include "swift/SIL/Dominance.h"
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#include "swift/SILAnalysis/Analysis.h"
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#include "llvm/ADT/DenseMap.h"
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namespace swift {
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class SILModule;
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class SILValue;
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class SILInstruction;
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class DominanceAnalysis : public SILAnalysis {
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llvm::DenseMap<SILFunction *, DominanceInfo*> DomInfo;
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llvm::DenseMap<SILFunction *, PostDominanceInfo*> PostDomInfo;
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public:
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virtual ~DominanceAnalysis() {
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// Delete Dominance Info.
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for (auto D : DomInfo)
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delete D.second;
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// Delete PostDominanceInfo.
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for (auto P : PostDomInfo)
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delete P.second;
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}
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DominanceAnalysis(SILModule *) : SILAnalysis(AnalysisKind::Dominance) {}
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DominanceInfo* getDomInfo(SILFunction *F) {
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if (!DomInfo.count(F))
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DomInfo[F] = new DominanceInfo(F);
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return DomInfo[F];
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}
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PostDominanceInfo* getPostDomInfo(SILFunction *F) {
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if (!PostDomInfo.count(F))
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PostDomInfo[F] = new PostDominanceInfo(F);
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return PostDomInfo[F];
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}
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static bool classof(const SILAnalysis *S) {
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return S->getKind() == AnalysisKind::Dominance;
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}
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virtual void invalidate(InvalidationKind K) {
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if (K >= InvalidationKind::CFG) {
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// Delete Dominance Info.
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for (auto D : DomInfo)
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delete D.second;
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// Delete PostDominanceInfo.
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for (auto P : PostDomInfo)
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delete P.second;
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// Clear the maps.
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DomInfo.clear();
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PostDomInfo.clear();
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}
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}
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virtual void invalidate(SILFunction* F, InvalidationKind K) {
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if (K >= InvalidationKind::CFG) {
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if (DomInfo.count(F)) {
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delete DomInfo[F];
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DomInfo.erase(F);
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}
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if (PostDomInfo.count(F)) {
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delete PostDomInfo[F];
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PostDomInfo.erase(F);
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}
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}
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}
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};
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} // end namespace swift
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#endif
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