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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 69 insertions, 0 deletions

diff --git a/lib/Target/SparcV9/LiveVar/BBLiveVar.h b/lib/Target/SparcV9/LiveVar/BBLiveVar.h
new file mode 100644
index 0000000000..7917cc2131
--- /dev/null
+++ b/lib/Target/SparcV9/LiveVar/BBLiveVar.h
@@ -0,0 +1,69 @@
+/* Title:   ValueSet.h
+   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/CFG.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
+  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);
+
+ 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
+
+  //TODO write a destructor to deallocate Def/In.Out sets and PhiArgMap
+
+};
+
+
+
+
+
+
+#endif
+