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ce325e491c
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3480 91177308-0d34-0410-b5e6-96231b3b80d8
49 lines
1.6 KiB
C++
49 lines
1.6 KiB
C++
//===- llvm/Analysis/BasicAliasAnalysis.h - Alias Analysis Impl -*- C++ -*-===//
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//
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// This file defines the generic AliasAnalysis interface, which is used as the
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// common interface used by all clients of alias analysis information, and
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// implemented by all alias analysis 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_BASIC_ALIAS_ANALYSIS_H
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#define LLVM_ANALYSIS_BASIC_ALIAS_ANALYSIS_H
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#include "llvm/Analysis/AliasAnalysis.h"
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#include "llvm/Pass.h"
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struct BasicAliasAnalysis : public FunctionPass, public AliasAnalysis {
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// Pass Implementation stuff. This isn't much of a pass.
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//
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bool runOnFunction(Function &) { return false; }
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// getAnalysisUsage - Does not modify anything.
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//
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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}
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// alias - This is the only method here that does anything interesting...
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//
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Result alias(const Value *V1, const Value *V2) const;
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/// canCallModify - We are not interprocedural, so we do nothing exciting.
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///
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Result canCallModify(const CallInst &CI, const Value *Ptr) const {
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return MayAlias;
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}
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/// canInvokeModify - We are not interprocedural, so we do nothing exciting.
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///
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Result canInvokeModify(const InvokeInst &I, const Value *Ptr) const {
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return MayAlias; // We are not interprocedural
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}
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};
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#endif
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