CSEConfigBase.h

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//===- CSEConfigBase.h - A CSEConfig interface ------------------*- 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_CODEGEN_CSECONFIGBASE_H
#define LLVM_CODEGEN_CSECONFIGBASE_H
 
namespace llvm {
// Class representing some configuration that can be done during GlobalISel's
// CSEInfo analysis. We define it here because TargetPassConfig can't depend on
// the GlobalISel library, and so we use this in the interface between them
// so that the derived classes in GISel can reference generic opcodes.
class CSEConfigBase {
public:
  virtual ~CSEConfigBase() = default;
  // Hook for defining which Generic instructions should be CSEd.
  // GISelCSEInfo currently only calls this hook when dealing with generic
  // opcodes.
  virtual bool shouldCSEOpc(unsigned Opc) { return false; }
};
 
} // namespace llvm
 
#endif // LLVM_CODEGEN_CSECONFIGBASE_H