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https://github.com/c64scene-ar/llvm-6502.git
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7339 91177308-0d34-0410-b5e6-96231b3b80d8
177 lines
5.4 KiB
C++
177 lines
5.4 KiB
C++
//===- DataStructure.h - Build data structure graphs ------------*- C++ -*-===//
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//
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// Implement the LLVM data structure analysis library.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_ANALYSIS_DATA_STRUCTURE_H
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#define LLVM_ANALYSIS_DATA_STRUCTURE_H
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#include "llvm/Pass.h"
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#include "Support/hash_set"
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class Type;
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class CallInst;
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class DSGraph;
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class DSNode;
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class DSCallSite;
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// FIXME: move this stuff to a private header
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namespace DataStructureAnalysis {
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// isPointerType - Return true if this first class type is big enough to hold
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// a pointer.
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//
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bool isPointerType(const Type *Ty);
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}
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// LocalDataStructures - The analysis that computes the local data structure
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// graphs for all of the functions in the program.
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//
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// FIXME: This should be a Function pass that can be USED by a Pass, and would
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// be automatically preserved. Until we can do that, this is a Pass.
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//
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class LocalDataStructures : public Pass {
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// DSInfo, one graph for each function
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hash_map<Function*, DSGraph*> DSInfo;
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DSGraph *GlobalsGraph;
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public:
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~LocalDataStructures() { releaseMemory(); }
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virtual bool run(Module &M);
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bool hasGraph(const Function &F) const {
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return DSInfo.find(const_cast<Function*>(&F)) != DSInfo.end();
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}
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// getDSGraph - Return the data structure graph for the specified function.
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DSGraph &getDSGraph(const Function &F) const {
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hash_map<Function*, DSGraph*>::const_iterator I =
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DSInfo.find(const_cast<Function*>(&F));
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assert(I != DSInfo.end() && "Function not in module!");
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return *I->second;
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}
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DSGraph &getGlobalsGraph() const { return *GlobalsGraph; }
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// print - Print out the analysis results...
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void print(std::ostream &O, const Module *M) const;
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// If the pass pipeline is done with this pass, we can release our memory...
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virtual void releaseMemory();
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// getAnalysisUsage - This obviously provides a data structure graph.
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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}
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};
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// BUDataStructures - The analysis that computes the interprocedurally closed
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// data structure graphs for all of the functions in the program. This pass
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// only performs a "Bottom Up" propagation (hence the name).
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//
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class BUDataStructures : public Pass {
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// DSInfo, one graph for each function
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hash_map<Function*, DSGraph*> DSInfo;
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DSGraph *GlobalsGraph;
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hash_multimap<CallInst*, Function*> ActualCallees;
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public:
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~BUDataStructures() { releaseMemory(); }
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virtual bool run(Module &M);
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bool hasGraph(const Function &F) const {
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return DSInfo.find(const_cast<Function*>(&F)) != DSInfo.end();
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}
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// getDSGraph - Return the data structure graph for the specified function.
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DSGraph &getDSGraph(const Function &F) const {
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hash_map<Function*, DSGraph*>::const_iterator I =
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DSInfo.find(const_cast<Function*>(&F));
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assert(I != DSInfo.end() && "Function not in module!");
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return *I->second;
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}
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DSGraph &getGlobalsGraph() const { return *GlobalsGraph; }
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// print - Print out the analysis results...
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void print(std::ostream &O, const Module *M) const;
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// If the pass pipeline is done with this pass, we can release our memory...
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virtual void releaseMemory();
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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AU.addRequired<LocalDataStructures>();
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}
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typedef hash_multimap<CallInst*, Function*> ActualCalleesTy;
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const ActualCalleesTy &getActualCallees() const {
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return ActualCallees;
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}
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private:
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void calculateGraph(DSGraph &G);
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void calculateReachableGraphs(Function *F);
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DSGraph &getOrCreateGraph(Function *F);
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unsigned calculateGraphs(Function *F, std::vector<Function*> &Stack,
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unsigned &NextID,
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hash_map<Function*, unsigned> &ValMap);
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};
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// TDDataStructures - Analysis that computes new data structure graphs
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// for each function using the closed graphs for the callers computed
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// by the bottom-up pass.
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//
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class TDDataStructures : public Pass {
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// DSInfo, one graph for each function
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hash_map<Function*, DSGraph*> DSInfo;
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hash_set<Function*> ArgsRemainIncomplete;
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DSGraph *GlobalsGraph;
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public:
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~TDDataStructures() { releaseMyMemory(); }
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virtual bool run(Module &M);
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bool hasGraph(const Function &F) const {
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return DSInfo.find(const_cast<Function*>(&F)) != DSInfo.end();
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}
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// getDSGraph - Return the data structure graph for the specified function.
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DSGraph &getDSGraph(const Function &F) const {
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hash_map<Function*, DSGraph*>::const_iterator I =
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DSInfo.find(const_cast<Function*>(&F));
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assert(I != DSInfo.end() && "Function not in module!");
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return *I->second;
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}
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DSGraph &getGlobalsGraph() const { return *GlobalsGraph; }
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// print - Print out the analysis results...
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void print(std::ostream &O, const Module *M) const;
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// If the pass pipeline is done with this pass, we can release our memory...
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virtual void releaseMyMemory();
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// getAnalysisUsage - This obviously provides a data structure graph.
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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AU.addRequired<BUDataStructures>();
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}
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private:
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void inlineGraphIntoCallees(DSGraph &G);
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DSGraph &getOrCreateDSGraph(Function &F);
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void ComputePostOrder(Function &F, hash_set<DSGraph*> &Visited,
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std::vector<DSGraph*> &PostOrder,
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const BUDataStructures::ActualCalleesTy &ActualCallees);
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};
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#endif
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