llvm/llvm/include/llvm/Analysis/BasicAliasAnalysis.h

//===- BasicAliasAnalysis.h - Stateless, local Alias Analysis ---*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
/// \file
/// This is the interface for LLVM's primary stateless and local alias analysis.
///
//===----------------------------------------------------------------------===//

#ifndef LLVM_ANALYSIS_BASICALIASANALYSIS_H
#define LLVM_ANALYSIS_BASICALIASANALYSIS_H

#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/IR/PassManager.h"
#include "llvm/Pass.h"
#include <memory>
#include <utility>

namespace llvm {

class AssumptionCache;
class DataLayout;
class DominatorTree;
class Function;
class GEPOperator;
class PHINode;
class SelectInst;
class TargetLibraryInfo;
class Value;

/// This is the AA result object for the basic, local, and stateless alias
/// analysis. It implements the AA query interface in an entirely stateless
/// manner. As one consequence, it is never invalidated due to IR changes.
/// While it does retain some storage, that is used as an optimization and not
/// to preserve information from query to query. However it does retain handles
/// to various other analyses and must be recomputed when those analyses are.
class BasicAAResult : public AAResultBase { … };

/// Analysis pass providing a never-invalidated alias analysis result.
class BasicAA : public AnalysisInfoMixin<BasicAA> { … };

/// Legacy wrapper pass to provide the BasicAAResult object.
class BasicAAWrapperPass : public FunctionPass { … };

FunctionPass *createBasicAAWrapperPass();

} // end namespace llvm

#endif // LLVM_ANALYSIS_BASICALIASANALYSIS_H