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29 lines
1.1 KiB
C
29 lines
1.1 KiB
C
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//===- CSEConfigBase.h - A CSEConfig interface ------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_CSECONFIG_BASE_H
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#define LLVM_CODEGEN_CSECONFIG_BASE_H
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namespace llvm {
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// Class representing some configuration that can be done during GlobalISel's
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// CSEInfo analysis. We define it here because TargetPassConfig can't depend on
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// the GlobalISel library, and so we use this in the interface between them
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// so that the derived classes in GISel can reference generic opcodes.
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class CSEConfigBase {
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public:
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virtual ~CSEConfigBase() = default;
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// Hook for defining which Generic instructions should be CSEd.
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// GISelCSEInfo currently only calls this hook when dealing with generic
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// opcodes.
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virtual bool shouldCSEOpc(unsigned Opc) { return false; }
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};
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} // namespace llvm
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#endif // LLVM_CODEGEN_CSECONFIG_BASE_H
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