mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-01 00:11:00 +00:00
598641b4ca
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@727 91177308-0d34-0410-b5e6-96231b3b80d8
79 lines
2.1 KiB
C++
79 lines
2.1 KiB
C++
/* Title: BBLiveVar.h -*- C++ -*-
|
|
Author: Ruchira Sasanka
|
|
Date: Jun 30, 01
|
|
Purpose: This is a wrapper class for BasicBlock which is used by live
|
|
variable anaysis.
|
|
*/
|
|
|
|
#ifndef LIVE_VAR_BB_H
|
|
#define LIVE_VAR_BB_H
|
|
|
|
#include "LiveVarSet.h"
|
|
#include "LiveVarMap.h"
|
|
|
|
#include "llvm/BasicBlock.h"
|
|
#include "llvm/Instruction.h"
|
|
#include "llvm/Type.h"
|
|
#include "llvm/iOther.h"
|
|
|
|
|
|
class BBLiveVar
|
|
{
|
|
const BasicBlock* BaseBB; // pointer to BasicBlock
|
|
unsigned int POId; // Post-Order ID
|
|
|
|
LiveVarSet DefSet; // Def set for LV analysis
|
|
LiveVarSet InSet, OutSet; // In & Out for LV analysis
|
|
bool InSetChanged, OutSetChanged; // set if the InSet/OutSet is modified
|
|
|
|
// map that contains phi args->BB they came
|
|
// set by calcDefUseSets & used by setPropagate
|
|
hash_map<const Value *, const BasicBlock *, hashFuncValue> PhiArgMap;
|
|
|
|
// method to propogate an InSet to OutSet of a predecessor
|
|
bool setPropagate( LiveVarSet *const OutSetOfPred,
|
|
const LiveVarSet *const InSetOfThisBB,
|
|
const BasicBlock *const PredBB);
|
|
|
|
// To add an operand which is a def
|
|
void addDef(const Value *Op);
|
|
|
|
// To add an operand which is a use
|
|
void addUse(const Value *Op);
|
|
|
|
public:
|
|
|
|
BBLiveVar( const BasicBlock* baseBB, unsigned int POId);
|
|
|
|
inline bool isInSetChanged() const { return InSetChanged; }
|
|
inline bool isOutSetChanged() const { return OutSetChanged; }
|
|
|
|
inline unsigned int getPOId() const { return POId; }
|
|
|
|
void calcDefUseSets() ; // calculates the Def & Use sets for this BB
|
|
bool applyTransferFunc(); // calcultes the In in terms of Out
|
|
|
|
// calculates Out set using In sets of the predecessors
|
|
bool applyFlowFunc(BBToBBLiveVarMapType LVMap);
|
|
|
|
inline const LiveVarSet* getOutSet() const { return &OutSet; }
|
|
inline const LiveVarSet* getInSet() const { return &InSet; }
|
|
|
|
void printAllSets() const; // for printing Def/In/Out sets
|
|
void printInOutSets() const; // for printing In/Out sets
|
|
|
|
~BBLiveVar() { } // nothing to do since only composite objects
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#endif
|
|
|