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58 lines
2.0 KiB
C++
58 lines
2.0 KiB
C++
//===- llvm/Analysis/ValueNumbering.h - Value #'ing Interface ---*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the abstract ValueNumbering interface, which is used as the
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// common interface used by all clients of value numbering information, and
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// implemented by all value numbering implementations.
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//
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// Implementations of this interface must implement the various virtual methods,
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// which automatically provides functionality for the entire suite of client
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// APIs.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_ANALYSIS_VALUE_NUMBERING_H
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#define LLVM_ANALYSIS_VALUE_NUMBERING_H
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#include <vector>
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#include "llvm/Pass.h"
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namespace llvm {
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class Value;
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class Instruction;
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struct ValueNumbering {
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virtual ~ValueNumbering(); // We want to be subclassed
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/// getEqualNumberNodes - Return nodes with the same value number as the
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/// specified Value. This fills in the argument vector with any equal values.
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///
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virtual void getEqualNumberNodes(Value *V1,
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std::vector<Value*> &RetVals) const = 0;
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///===-------------------------------------------------------------------===//
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/// Interfaces to update value numbering analysis information as the client
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/// changes the program
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///
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/// deleteInstruction - Clients should invoke this method when they delete an
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/// instruction from the program. This allows the analysis implementations to
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/// avoid having dangling pointers in their representation.
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virtual void deleteInstruction(Instruction *I) {}
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};
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extern void BasicValueNumberingStub();
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static IncludeFile
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HDR_INCLUDE_VALUENUMBERING_CPP((void*)&BasicValueNumberingStub);
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} // End llvm namespace
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#endif
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