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| //===- StackSafetyAnalysis.h - Stack memory safety 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
//
//===----------------------------------------------------------------------===//
//
// Stack Safety Analysis detects allocas and arguments with safe access.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_ANALYSIS_STACKSAFETYANALYSIS_H
#define LLVM_ANALYSIS_STACKSAFETYANALYSIS_H
#include "llvm/IR/PassManager.h"
#include "llvm/Pass.h"
namespace llvm {
/// Interface to access stack safety analysis results for single function.
class StackSafetyInfo {
public:
struct FunctionInfo;
private:
std::unique_ptr<FunctionInfo> Info;
public:
StackSafetyInfo();
StackSafetyInfo(FunctionInfo &&Info);
StackSafetyInfo(StackSafetyInfo &&);
StackSafetyInfo &operator=(StackSafetyInfo &&);
~StackSafetyInfo();
// TODO: Add useful for client methods.
void print(raw_ostream &O) const;
};
/// StackSafetyInfo wrapper for the new pass manager.
class StackSafetyAnalysis : public AnalysisInfoMixin<StackSafetyAnalysis> {
friend AnalysisInfoMixin<StackSafetyAnalysis>;
static AnalysisKey Key;
public:
using Result = StackSafetyInfo;
StackSafetyInfo run(Function &F, FunctionAnalysisManager &AM);
};
/// Printer pass for the \c StackSafetyAnalysis results.
class StackSafetyPrinterPass : public PassInfoMixin<StackSafetyPrinterPass> {
raw_ostream &OS;
public:
explicit StackSafetyPrinterPass(raw_ostream &OS) : OS(OS) {}
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
};
/// StackSafetyInfo wrapper for the legacy pass manager
class StackSafetyInfoWrapperPass : public FunctionPass {
StackSafetyInfo SSI;
public:
static char ID;
StackSafetyInfoWrapperPass();
const StackSafetyInfo &getResult() const { return SSI; }
void print(raw_ostream &O, const Module *M) const override;
void getAnalysisUsage(AnalysisUsage &AU) const override;
bool runOnFunction(Function &F) override;
};
using StackSafetyGlobalInfo = std::map<const GlobalValue *, StackSafetyInfo>;
/// This pass performs the global (interprocedural) stack safety analysis (new
/// pass manager).
class StackSafetyGlobalAnalysis
: public AnalysisInfoMixin<StackSafetyGlobalAnalysis> {
friend AnalysisInfoMixin<StackSafetyGlobalAnalysis>;
static AnalysisKey Key;
public:
using Result = StackSafetyGlobalInfo;
Result run(Module &M, ModuleAnalysisManager &AM);
};
/// Printer pass for the \c StackSafetyGlobalAnalysis results.
class StackSafetyGlobalPrinterPass
: public PassInfoMixin<StackSafetyGlobalPrinterPass> {
raw_ostream &OS;
public:
explicit StackSafetyGlobalPrinterPass(raw_ostream &OS) : OS(OS) {}
PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM);
};
/// This pass performs the global (interprocedural) stack safety analysis
/// (legacy pass manager).
class StackSafetyGlobalInfoWrapperPass : public ModulePass {
StackSafetyGlobalInfo SSI;
public:
static char ID;
StackSafetyGlobalInfoWrapperPass();
const StackSafetyGlobalInfo &getResult() const { return SSI; }
void print(raw_ostream &O, const Module *M) const override;
void getAnalysisUsage(AnalysisUsage &AU) const override;
bool runOnModule(Module &M) override;
};
} // end namespace llvm
#endif // LLVM_ANALYSIS_STACKSAFETYANALYSIS_H
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