mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-21 03:29:40 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20064 91177308-0d34-0410-b5e6-96231b3b80d8
262 lines
8.2 KiB
C++
262 lines
8.2 KiB
C++
//===- DataStructure.h - Build data structure graphs ------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Implement the LLVM data structure analysis library.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_ANALYSIS_DATA_STRUCTURE_H
|
|
#define LLVM_ANALYSIS_DATA_STRUCTURE_H
|
|
|
|
#include "llvm/Pass.h"
|
|
#include "llvm/Target/TargetData.h"
|
|
#include "llvm/ADT/hash_map"
|
|
#include "llvm/ADT/hash_set"
|
|
|
|
namespace llvm {
|
|
|
|
class Type;
|
|
class Instruction;
|
|
class DSGraph;
|
|
class DSNode;
|
|
class DSNodeHandle;
|
|
|
|
// FIXME: move this stuff to a private header
|
|
namespace DataStructureAnalysis {
|
|
/// isPointerType - Return true if this first class type is big enough to hold
|
|
/// a pointer.
|
|
///
|
|
bool isPointerType(const Type *Ty);
|
|
}
|
|
|
|
|
|
// LocalDataStructures - The analysis that computes the local data structure
|
|
// graphs for all of the functions in the program.
|
|
//
|
|
// FIXME: This should be a Function pass that can be USED by a Pass, and would
|
|
// be automatically preserved. Until we can do that, this is a Pass.
|
|
//
|
|
class LocalDataStructures : public ModulePass {
|
|
// DSInfo, one graph for each function
|
|
hash_map<Function*, DSGraph*> DSInfo;
|
|
DSGraph *GlobalsGraph;
|
|
public:
|
|
~LocalDataStructures() { releaseMemory(); }
|
|
|
|
virtual bool runOnModule(Module &M);
|
|
|
|
bool hasGraph(const Function &F) const {
|
|
return DSInfo.find(const_cast<Function*>(&F)) != DSInfo.end();
|
|
}
|
|
|
|
/// getDSGraph - Return the data structure graph for the specified function.
|
|
///
|
|
DSGraph &getDSGraph(const Function &F) const {
|
|
hash_map<Function*, DSGraph*>::const_iterator I =
|
|
DSInfo.find(const_cast<Function*>(&F));
|
|
assert(I != DSInfo.end() && "Function not in module!");
|
|
return *I->second;
|
|
}
|
|
|
|
DSGraph &getGlobalsGraph() const { return *GlobalsGraph; }
|
|
|
|
/// print - Print out the analysis results...
|
|
///
|
|
void print(std::ostream &O, const Module *M) const;
|
|
|
|
/// releaseMemory - if the pass pipeline is done with this pass, we can
|
|
/// release our memory...
|
|
///
|
|
virtual void releaseMemory();
|
|
|
|
/// getAnalysisUsage - This obviously provides a data structure graph.
|
|
///
|
|
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
|
|
AU.setPreservesAll();
|
|
AU.addRequired<TargetData>();
|
|
}
|
|
};
|
|
|
|
|
|
/// BUDataStructures - The analysis that computes the interprocedurally closed
|
|
/// data structure graphs for all of the functions in the program. This pass
|
|
/// only performs a "Bottom Up" propagation (hence the name).
|
|
///
|
|
class BUDataStructures : public ModulePass {
|
|
protected:
|
|
// DSInfo, one graph for each function
|
|
hash_map<Function*, DSGraph*> DSInfo;
|
|
DSGraph *GlobalsGraph;
|
|
hash_multimap<Instruction*, Function*> ActualCallees;
|
|
|
|
// This map is only maintained during construction of BU Graphs
|
|
std::map<std::vector<Function*>,
|
|
std::pair<DSGraph*, std::vector<DSNodeHandle> > > *IndCallGraphMap;
|
|
public:
|
|
~BUDataStructures() { releaseMemory(); }
|
|
|
|
virtual bool runOnModule(Module &M);
|
|
|
|
bool hasGraph(const Function &F) const {
|
|
return DSInfo.find(const_cast<Function*>(&F)) != DSInfo.end();
|
|
}
|
|
|
|
/// getDSGraph - Return the data structure graph for the specified function.
|
|
///
|
|
DSGraph &getDSGraph(const Function &F) const {
|
|
hash_map<Function*, DSGraph*>::const_iterator I =
|
|
DSInfo.find(const_cast<Function*>(&F));
|
|
assert(I != DSInfo.end() && "Function not in module!");
|
|
return *I->second;
|
|
}
|
|
|
|
DSGraph &getGlobalsGraph() const { return *GlobalsGraph; }
|
|
|
|
/// deleteValue/copyValue - Interfaces to update the DSGraphs in the program.
|
|
/// These correspond to the interfaces defined in the AliasAnalysis class.
|
|
void deleteValue(Value *V);
|
|
void copyValue(Value *From, Value *To);
|
|
|
|
/// print - Print out the analysis results...
|
|
///
|
|
void print(std::ostream &O, const Module *M) const;
|
|
|
|
/// releaseMemory - if the pass pipeline is done with this pass, we can
|
|
/// release our memory...
|
|
///
|
|
virtual void releaseMemory();
|
|
|
|
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
|
|
AU.setPreservesAll();
|
|
AU.addRequired<LocalDataStructures>();
|
|
}
|
|
|
|
typedef hash_multimap<Instruction*, Function*> ActualCalleesTy;
|
|
const ActualCalleesTy &getActualCallees() const {
|
|
return ActualCallees;
|
|
}
|
|
|
|
private:
|
|
void calculateGraph(DSGraph &G);
|
|
|
|
DSGraph &getOrCreateGraph(Function *F);
|
|
|
|
unsigned calculateGraphs(Function *F, std::vector<Function*> &Stack,
|
|
unsigned &NextID,
|
|
hash_map<Function*, unsigned> &ValMap);
|
|
};
|
|
|
|
|
|
/// TDDataStructures - Analysis that computes new data structure graphs
|
|
/// for each function using the closed graphs for the callers computed
|
|
/// by the bottom-up pass.
|
|
///
|
|
class TDDataStructures : public ModulePass {
|
|
// DSInfo, one graph for each function
|
|
hash_map<Function*, DSGraph*> DSInfo;
|
|
hash_set<Function*> ArgsRemainIncomplete;
|
|
DSGraph *GlobalsGraph;
|
|
public:
|
|
~TDDataStructures() { releaseMyMemory(); }
|
|
|
|
virtual bool runOnModule(Module &M);
|
|
|
|
bool hasGraph(const Function &F) const {
|
|
return DSInfo.find(const_cast<Function*>(&F)) != DSInfo.end();
|
|
}
|
|
|
|
/// getDSGraph - Return the data structure graph for the specified function.
|
|
///
|
|
DSGraph &getDSGraph(const Function &F) const {
|
|
hash_map<Function*, DSGraph*>::const_iterator I =
|
|
DSInfo.find(const_cast<Function*>(&F));
|
|
assert(I != DSInfo.end() && "Function not in module!");
|
|
return *I->second;
|
|
}
|
|
|
|
DSGraph &getGlobalsGraph() const { return *GlobalsGraph; }
|
|
|
|
/// deleteValue/copyValue - Interfaces to update the DSGraphs in the program.
|
|
/// These correspond to the interfaces defined in the AliasAnalysis class.
|
|
void deleteValue(Value *V);
|
|
void copyValue(Value *From, Value *To);
|
|
|
|
/// print - Print out the analysis results...
|
|
///
|
|
void print(std::ostream &O, const Module *M) const;
|
|
|
|
/// If the pass pipeline is done with this pass, we can release our memory...
|
|
///
|
|
virtual void releaseMyMemory();
|
|
|
|
/// getAnalysisUsage - This obviously provides a data structure graph.
|
|
///
|
|
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
|
|
AU.setPreservesAll();
|
|
AU.addRequired<BUDataStructures>();
|
|
}
|
|
|
|
private:
|
|
void markReachableFunctionsExternallyAccessible(DSNode *N,
|
|
hash_set<DSNode*> &Visited);
|
|
|
|
void inlineGraphIntoCallees(DSGraph &G);
|
|
DSGraph &getOrCreateDSGraph(Function &F);
|
|
void ComputePostOrder(Function &F, hash_set<DSGraph*> &Visited,
|
|
std::vector<DSGraph*> &PostOrder,
|
|
const BUDataStructures::ActualCalleesTy &ActualCallees);
|
|
};
|
|
|
|
|
|
/// CompleteBUDataStructures - This is the exact same as the bottom-up graphs,
|
|
/// but we use take a completed call graph and inline all indirect callees into
|
|
/// their callers graphs, making the result more useful for things like pool
|
|
/// allocation.
|
|
///
|
|
struct CompleteBUDataStructures : public BUDataStructures {
|
|
virtual bool runOnModule(Module &M);
|
|
|
|
bool hasGraph(const Function &F) const {
|
|
return DSInfo.find(const_cast<Function*>(&F)) != DSInfo.end();
|
|
}
|
|
|
|
/// getDSGraph - Return the data structure graph for the specified function.
|
|
///
|
|
DSGraph &getDSGraph(const Function &F) const {
|
|
hash_map<Function*, DSGraph*>::const_iterator I =
|
|
DSInfo.find(const_cast<Function*>(&F));
|
|
assert(I != DSInfo.end() && "Function not in module!");
|
|
return *I->second;
|
|
}
|
|
|
|
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
|
|
AU.setPreservesAll();
|
|
AU.addRequired<BUDataStructures>();
|
|
|
|
// FIXME: TEMPORARY (remove once finalization of indirect call sites in the
|
|
// globals graph has been implemented in the BU pass)
|
|
AU.addRequired<TDDataStructures>();
|
|
}
|
|
|
|
/// print - Print out the analysis results...
|
|
///
|
|
void print(std::ostream &O, const Module *M) const;
|
|
|
|
private:
|
|
unsigned calculateSCCGraphs(DSGraph &FG, std::vector<DSGraph*> &Stack,
|
|
unsigned &NextID,
|
|
hash_map<DSGraph*, unsigned> &ValMap);
|
|
DSGraph &getOrCreateGraph(Function &F);
|
|
void processGraph(DSGraph &G);
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|