StructuralHash.h

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//=- StructuralHash.h - Structural Hash Printing --*- 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
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_ANALYSIS_STRUCTURALHASH_H
#define LLVM_ANALYSIS_STRUCTURALHASH_H
 
#include "llvm/IR/PassManager.h"
 
namespace llvm {
 
enum class StructuralHashOptions {
  None,              /// Hash with opcode only.
  Detailed,          /// Hash with opcode and operands.
  CallTargetIgnored, /// Ignore call target operand when computing hash.
};
 
/// Printer pass for  StructuralHashes
class StructuralHashPrinterPass
    : public PassInfoMixin<StructuralHashPrinterPass> {
  raw_ostream &OS;
  const StructuralHashOptions Options;
 
public:
  explicit StructuralHashPrinterPass(raw_ostream &OS,
                                     StructuralHashOptions Options)
      : OS(OS), Options(Options) {}
 
  PreservedAnalyses run(Module &M, ModuleAnalysisManager &MAM);
 
  static bool isRequired() { return true; }
};
 
} // namespace llvm
 
#endif // LLVM_ANALYSIS_STRUCTURALHASH_H