-//===-- BBLiveVar.h - Live Variable Analysis for a BasicBlock ----*- C++ -*--=//
+//===-- BBLiveVar.h - Live Variable Analysis for a BasicBlock ---*- 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.
+//
+//===----------------------------------------------------------------------===//
//
// This is a BasicBlock annotation class that is used by live var analysis to
// hold data flow information for a basic block.
#ifndef LIVE_VAR_BB_H
#define LIVE_VAR_BB_H
-#include "llvm/Analysis/LiveVar/ValueSet.h"
-#include "llvm/Annotation.h"
-#include <map>
+#include "llvm/CodeGen/ValueSet.h"
+#include "llvm/ADT/hash_map"
+
+namespace llvm {
+
class BasicBlock;
class Value;
class MachineBasicBlock;
extern LiveVarDebugLevel_t DEBUG_LV;
-class BBLiveVar : public Annotation {
+class BBLiveVar {
const BasicBlock &BB; // pointer to BasicBlock
- MachineBasicBlock &MBB; // Pointer to MachineBasicBlock
+ const MachineBasicBlock &MBB; // Pointer to MachineBasicBlock
unsigned POID; // Post-Order ID
ValueSet DefSet; // Def set (with no preceding uses) for LV analysis
// map that contains PredBB -> Phi arguments
// coming in on that edge. such uses have to be
// treated differently from ordinary uses.
- std::map<const BasicBlock *, ValueSet> PredToEdgeInSetMap;
-
+ hash_map<const BasicBlock *, ValueSet> PredToEdgeInSetMap;
+
// method to propagate an InSet to OutSet of a predecessor
- bool setPropagate(ValueSet *OutSetOfPred,
+ bool setPropagate(ValueSet *OutSetOfPred,
const ValueSet *InSetOfThisBB,
const BasicBlock *PredBB);
// To add an operand which is a def
- void addDef(const Value *Op);
+ void addDef(const Value *Op);
// To add an operand which is a use
void addUse(const Value *Op);
void calcDefUseSets(); // calculates the Def & Use sets for this BB
+public:
- BBLiveVar(const BasicBlock &BB, MachineBasicBlock &MBB, unsigned POID);
- ~BBLiveVar() {} // make dtor private
- public:
- static BBLiveVar *CreateOnBB(const BasicBlock &BB, MachineBasicBlock &MBB,
- unsigned POID);
- static BBLiveVar *GetFromBB(const BasicBlock &BB);
- static void RemoveFromBB(const BasicBlock &BB);
+ BBLiveVar(const BasicBlock &BB, const MachineBasicBlock &MBB, unsigned POID);
- inline bool isInSetChanged() const { return InSetChanged; }
+ inline bool isInSetChanged() const { return InSetChanged; }
inline bool isOutSetChanged() const { return OutSetChanged; }
- MachineBasicBlock &getMachineBasicBlock() const { return MBB; }
+ const MachineBasicBlock &getMachineBasicBlock() const { return MBB; }
inline unsigned getPOId() const { return POID; }
- bool applyTransferFunc(); // calcultes the In in terms of Out
+ bool applyTransferFunc(); // calcultes the In in terms of Out
// calculates Out set using In sets of the predecessors
- bool applyFlowFunc();
+ bool applyFlowFunc(hash_map<const BasicBlock*, BBLiveVar*> &BBLiveVarInfo);
inline const ValueSet &getOutSet() const { return OutSet; }
+ inline ValueSet &getOutSet() { return OutSet; }
+
inline const ValueSet &getInSet() const { return InSet; }
+ inline ValueSet &getInSet() { return InSet; }
void printAllSets() const; // for printing Def/In/Out sets
void printInOutSets() const; // for printing In/Out sets
};
+} // End llvm namespace
+
#endif