| //===- 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_CSECONFIG_BASE_H |
| #define LLVM_CODEGEN_CSECONFIG_BASE_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_CSECONFIG_BASE_H |