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75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
//===-- llvm/ConstantPool.h - Define the constant pool class ------*- C++ -*-=//
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//
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// This file implements a constant pool that is split into different type
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// planes. This allows searching for a typed object to go a little faster.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CONSTANTPOOL_H
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#define LLVM_CONSTANTPOOL_H
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#include <vector>
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#include "llvm/ValueHolder.h"
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class ConstPoolVal;
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class SymTabValue;
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class Type;
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class ConstantPool {
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public:
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typedef ValueHolder<ConstPoolVal, SymTabValue> PlaneType;
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private:
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typedef vector<PlaneType*> PlanesType;
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PlanesType Planes;
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SymTabValue *Parent;
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inline void resize(unsigned size);
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public:
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inline ConstantPool(SymTabValue *P) { Parent = P; }
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inline ~ConstantPool() { delete_all(); }
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inline SymTabValue *getParent() { return Parent; }
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inline const SymTabValue *getParent() const { return Parent; }
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void setParent(SymTabValue *STV);
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void dropAllReferences(); // Drop all references to other constants
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// Constant getPlane - Returns true if the type plane does not exist,
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// otherwise updates the pointer to point to the correct plane.
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//
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bool getPlane(const Type *T, const PlaneType *&Plane) const;
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bool getPlane(const Type *T, PlaneType *&Plane);
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// Normal getPlane - Resizes constant pool to contain type even if it doesn't
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// already have it.
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//
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PlaneType &getPlane(const Type *T);
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// insert - Add constant into the symbol table...
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void insert(ConstPoolVal *N);
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bool remove(ConstPoolVal *N); // Returns true on failure
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void delete_all();
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// find - Search to see if a constant of the specified value is already in
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// the constant table.
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//
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const ConstPoolVal *find(const ConstPoolVal *V) const;
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ConstPoolVal *find(const ConstPoolVal *V) ;
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const ConstPoolVal *find(const Type *Ty) const;
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ConstPoolVal *find(const Type *Ty) ;
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// Plane iteration support
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//
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typedef PlanesType::iterator plane_iterator;
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typedef PlanesType::const_iterator plane_const_iterator;
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inline plane_iterator begin() { return Planes.begin(); }
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inline plane_const_iterator begin() const { return Planes.begin(); }
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inline plane_iterator end() { return Planes.end(); }
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inline plane_const_iterator end() const { return Planes.end(); }
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};
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#endif
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