1 //===-- Bitcode/Writer/ValueEnumerator.h - Number values --------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by Chris Lattner and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This class gives values and types Unique ID's.
12 //===----------------------------------------------------------------------===//
14 #ifndef VALUE_ENUMERATOR_H
15 #define VALUE_ENUMERATOR_H
17 #include "llvm/ADT/DenseMap.h"
26 class TypeSymbolTable;
27 class ValueSymbolTable;
30 class ValueEnumerator {
32 // For each type, we remember its Type* and occurrence frequency.
33 typedef std::vector<std::pair<const Type*, unsigned> > TypeList;
35 // For each value, we remember its Value* and occurrence frequency.
36 typedef std::vector<std::pair<const Value*, unsigned> > ValueList;
38 typedef DenseMap<const Type*, unsigned> TypeMapType;
42 typedef DenseMap<const Value*, unsigned> ValueMapType;
43 ValueMapType ValueMap;
47 ValueEnumerator(const ValueEnumerator &); // DO NOT IMPLEMENT
48 void operator=(const ValueEnumerator &); // DO NOT IMPLEMENT
50 ValueEnumerator(const Module *M);
52 unsigned getValueID(const Value *V) const {
53 ValueMapType::const_iterator I = ValueMap.find(V);
54 assert(I != ValueMap.end() && "Value not in slotcalculator!");
58 unsigned getTypeID(const Type *T) const {
59 TypeMapType::const_iterator I = TypeMap.find(T);
60 assert(I != TypeMap.end() && "Type not in ValueEnumerator!");
64 const ValueList &getValues() const { return Values; }
65 const TypeList &getTypes() const { return Types; }
67 /// PurgeAggregateValues - If there are any aggregate values at the end of the
68 /// value list, remove them and return the count of the remaining values. If
69 /// there are none, return -1.
70 int PurgeAggregateValues();
72 /// incorporateFunction/purgeFunction - If you'd like to deal with a function,
73 /// use these two methods to get its data into the ValueEnumerator!
75 void incorporateFunction(const Function *F);
79 void EnumerateValue(const Value *V);
80 void EnumerateType(const Type *T);
82 void EnumerateTypeSymbolTable(const TypeSymbolTable &ST);
83 void EnumerateValueSymbolTable(const ValueSymbolTable &ST);
86 } // End llvm namespace