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1339b5403b
Correct format: //===--- Name of file - Description ----------------------------*- Lang -*-===//
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
//===--- LoopAnalysis.h - SIL Loop 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 - 2016 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_SILOPTIMIZER_ANALYSIS_LOOPINFOANALYSIS_H
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#define SWIFT_SILOPTIMIZER_ANALYSIS_LOOPINFOANALYSIS_H
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#include "swift/SIL/CFG.h"
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#include "swift/SIL/LoopInfo.h"
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#include "swift/SIL/SILBasicBlock.h"
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#include "swift/SILOptimizer/Analysis/Analysis.h"
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#include "llvm/ADT/DenseMap.h"
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namespace swift {
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class DominanceInfo;
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class SILLoop;
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class DominanceAnalysis;
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}
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namespace swift {
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/// Computes natural loop information for SIL basic blocks.
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class SILLoopAnalysis : public FunctionAnalysisBase<SILLoopInfo> {
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DominanceAnalysis *DA;
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public:
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SILLoopAnalysis(SILModule *)
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: FunctionAnalysisBase(AnalysisKind::Loop), DA(nullptr) {}
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static bool classof(const SILAnalysis *S) {
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return S->getKind() == AnalysisKind::Loop;
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}
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virtual bool shouldInvalidate(SILAnalysis::InvalidationKind K) override {
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return K & InvalidationKind::Branches;
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}
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// Computes loop information for the given function using dominance
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// information.
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virtual SILLoopInfo *newFunctionAnalysis(SILFunction *F) override;
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virtual void initialize(SILPassManager *PM) override;
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};
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} // end namespace swift
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#endif
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