LightweightSignalEquivalenceAnalysis.h

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//===- LightweightSignalEquivalenceAnalysis.h -------------------*- C++ -*-===//
//
// Part of the LLZK Project, under the Apache License v2.0.
// See LICENSE.txt for license information.
// Copyright 2025 Veridise Inc.
// SPDX-License-Identifier: Apache-2.0
//
//===----------------------------------------------------------------------===//
 
#pragma once
 
#include <mlir/IR/Operation.h>
 
#include <llvm/ADT/EquivalenceClasses.h>
 
namespace llzk {
 
struct ValueLess {
  bool operator()(const mlir::Value &v1, const mlir::Value &v2) const {
    return v1.getAsOpaquePointer() < v2.getAsOpaquePointer();
  }
};
 
class LightweightSignalEquivalenceAnalysis {
  llvm::EquivalenceClasses<mlir::Value, ValueLess> equivalentSignals;
 
public:
  LightweightSignalEquivalenceAnalysis(mlir::Operation *op);
  bool areSignalsEquivalent(mlir::Value v1, mlir::Value v2);
};
 
} // namespace llzk