1//===- CSEConfigBase.h - A CSEConfig interface ------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_CODEGEN_CSECONFIGBASE_H
10#define LLVM_CODEGEN_CSECONFIGBASE_H
11
12namespace llvm {
13// Class representing some configuration that can be done during GlobalISel's
14// CSEInfo analysis. We define it here because TargetPassConfig can't depend on
15// the GlobalISel library, and so we use this in the interface between them
16// so that the derived classes in GISel can reference generic opcodes.
17class CSEConfigBase {
18public:
19 virtual ~CSEConfigBase() = default;
20 // Hook for defining which Generic instructions should be CSEd.
21 // GISelCSEInfo currently only calls this hook when dealing with generic
22 // opcodes.
23 virtual bool shouldCSEOpc(unsigned Opc) { return false; }
24};
25
26} // namespace llvm
27
28#endif // LLVM_CODEGEN_CSECONFIGBASE_H
29