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

1 files changed, 62 insertions, 0 deletions

diff --git a/include/llvm/CodeGen/ValueSet.h b/include/llvm/CodeGen/ValueSet.h
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+++ b/include/llvm/CodeGen/ValueSet.h
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+/* Title:   ValueSet.h
+   Author:  Ruchira Sasanka
+   Date:    Jun 30, 01
+   Purpose: Contains a mathematical set of Values. LiveVarSet is derived from
+            this. Contains both class and method definitions
+*/
+
+#ifndef VALUE_SET_H
+#define VALUE_SET_H
+
+#include <stdlib.h>
+
+#include <hash_set>
+#include <algorithm>
+#include <fstream>
+#include <iostream>
+
+#include "llvm/Value.h"
+
+
+//------------------------ Support functions ---------------------------------
+
+struct hashFuncValue {                // sturcture containing the hash function. 
+  inline size_t operator () (const Value *const val) const 
+  { return (size_t) val;  }
+};
+
+
+
+//------------------- Class Definition for ValueSet ----------------------------
+
+void printValue( const Value *const v);  // func to print a Value 
+
+
+
+class ValueSet : public hash_set<const Value *,  hashFuncValue > 
+{
+ 
+ public:
+  ValueSet();   // constructor
+
+  inline void add(const Value *const  val) 
+    { assert( val ); insert(val);}           // for adding a live variable to set
+
+  inline void remove(const Value *const  val) 
+    { assert( val ); erase(val); }       // for removing a live variable from set
+
+  bool setUnion( const ValueSet *const set1);    // for performing two set unions
+  void setSubtract( const ValueSet *const set1); // for performing set difference
+
+                                                 // for performing set difference
+  void setDifference( const ValueSet *const set1, const ValueSet *const set2); 
+ 
+  void printSet() const;  // for printing a live variable set
+};
+
+
+
+
+
+
+#endif