/usr/include/llvm-3.9/llvm/Analysis/ScalarEvolutionAliasAnalysis.h is in llvm-3.9-dev 1:3.9.1-19ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | //===- ScalarEvolutionAliasAnalysis.h - SCEV-based AA -----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
/// \file
/// This is the interface for a SCEV-based alias analysis.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_ANALYSIS_SCALAREVOLUTIONALIASANALYSIS_H
#define LLVM_ANALYSIS_SCALAREVOLUTIONALIASANALYSIS_H
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Analysis/ScalarEvolutionExpressions.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Module.h"
#include "llvm/Pass.h"
namespace llvm {
/// A simple alias analysis implementation that uses ScalarEvolution to answer
/// queries.
class SCEVAAResult : public AAResultBase<SCEVAAResult> {
ScalarEvolution &SE;
public:
explicit SCEVAAResult(ScalarEvolution &SE) : AAResultBase(), SE(SE) {}
SCEVAAResult(SCEVAAResult &&Arg) : AAResultBase(std::move(Arg)), SE(Arg.SE) {}
AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB);
private:
Value *GetBaseValue(const SCEV *S);
};
/// Analysis pass providing a never-invalidated alias analysis result.
class SCEVAA : public AnalysisInfoMixin<SCEVAA> {
friend AnalysisInfoMixin<SCEVAA>;
static char PassID;
public:
typedef SCEVAAResult Result;
SCEVAAResult run(Function &F, AnalysisManager<Function> &AM);
};
/// Legacy wrapper pass to provide the SCEVAAResult object.
class SCEVAAWrapperPass : public FunctionPass {
std::unique_ptr<SCEVAAResult> Result;
public:
static char ID;
SCEVAAWrapperPass();
SCEVAAResult &getResult() { return *Result; }
const SCEVAAResult &getResult() const { return *Result; }
bool runOnFunction(Function &F) override;
void getAnalysisUsage(AnalysisUsage &AU) const override;
};
/// Creates an instance of \c SCEVAAWrapperPass.
FunctionPass *createSCEVAAWrapperPass();
}
#endif
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