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123 lines
3.8 KiB
C++
123 lines
3.8 KiB
C++
//===-- Bitcode/Writer/ValueEnumerator.h - Number values --------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This class gives values and types Unique ID's.
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//
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//===----------------------------------------------------------------------===//
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#ifndef VALUE_ENUMERATOR_H
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#define VALUE_ENUMERATOR_H
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/Attributes.h"
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#include <vector>
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namespace llvm {
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class Type;
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class Value;
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class BasicBlock;
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class Function;
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class Module;
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class AttrListPtr;
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class TypeSymbolTable;
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class ValueSymbolTable;
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class ValueEnumerator {
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public:
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// For each type, we remember its Type* and occurrence frequency.
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typedef std::vector<std::pair<const Type*, unsigned> > TypeList;
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// For each value, we remember its Value* and occurrence frequency.
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typedef std::vector<std::pair<const Value*, unsigned> > ValueList;
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private:
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typedef DenseMap<const Type*, unsigned> TypeMapType;
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TypeMapType TypeMap;
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TypeList Types;
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typedef DenseMap<const Value*, unsigned> ValueMapType;
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ValueMapType ValueMap;
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ValueList Values;
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typedef DenseMap<void*, unsigned> AttributeMapType;
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AttributeMapType AttributeMap;
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std::vector<AttrListPtr> Attributes;
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/// BasicBlocks - This contains all the basic blocks for the currently
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/// incorporated function. Their reverse mapping is stored in ValueMap.
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std::vector<const BasicBlock*> BasicBlocks;
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/// When a function is incorporated, this is the size of the Values list
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/// before incorporation.
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unsigned NumModuleValues;
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unsigned FirstFuncConstantID;
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unsigned FirstInstID;
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ValueEnumerator(const ValueEnumerator &); // DO NOT IMPLEMENT
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void operator=(const ValueEnumerator &); // DO NOT IMPLEMENT
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public:
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ValueEnumerator(const Module *M);
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unsigned getValueID(const Value *V) const {
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ValueMapType::const_iterator I = ValueMap.find(V);
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assert(I != ValueMap.end() && "Value not in slotcalculator!");
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return I->second-1;
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}
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unsigned getTypeID(const Type *T) const {
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TypeMapType::const_iterator I = TypeMap.find(T);
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assert(I != TypeMap.end() && "Type not in ValueEnumerator!");
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return I->second-1;
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}
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unsigned getAttributeID(const AttrListPtr &PAL) const {
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if (PAL.isEmpty()) return 0; // Null maps to zero.
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AttributeMapType::const_iterator I = AttributeMap.find(PAL.getRawPointer());
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assert(I != AttributeMap.end() && "Attribute not in ValueEnumerator!");
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return I->second;
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}
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/// getFunctionConstantRange - Return the range of values that corresponds to
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/// function-local constants.
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void getFunctionConstantRange(unsigned &Start, unsigned &End) const {
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Start = FirstFuncConstantID;
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End = FirstInstID;
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}
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const ValueList &getValues() const { return Values; }
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const TypeList &getTypes() const { return Types; }
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const std::vector<const BasicBlock*> &getBasicBlocks() const {
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return BasicBlocks;
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}
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const std::vector<AttrListPtr> &getAttributes() const {
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return Attributes;
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}
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/// incorporateFunction/purgeFunction - If you'd like to deal with a function,
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/// use these two methods to get its data into the ValueEnumerator!
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///
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void incorporateFunction(const Function &F);
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void purgeFunction();
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private:
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void OptimizeConstants(unsigned CstStart, unsigned CstEnd);
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void EnumerateValue(const Value *V);
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void EnumerateType(const Type *T);
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void EnumerateOperandType(const Value *V);
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void EnumerateAttributes(const AttrListPtr &PAL);
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void EnumerateTypeSymbolTable(const TypeSymbolTable &ST);
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void EnumerateValueSymbolTable(const ValueSymbolTable &ST);
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};
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} // End llvm namespace
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#endif
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