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//===-- Bitcode/Writer/ValueEnumerator.h - Number values --------*- C++ -*-===//
// The LLVM Compiler Infrastructure
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
// This class gives values and types Unique ID's.
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/IR/Attributes.h"
#include <vector>
namespace llvm {
class Type;
class Value;
class Instruction;
class BasicBlock;
class Function;
class Module;
class Metadata;
class LocalAsMetadata;
class MDNode;
class NamedMDNode;
class AttributeSet;
class ValueSymbolTable;
class MDSymbolTable;
class raw_ostream;
} // end llvm namespace
namespace llvm_2_9_func {
class ValueEnumerator {
typedef std::vector<llvm::Type*> TypeList;
// For each value, we remember its Value* and occurrence frequency.
typedef std::vector<std::pair<const llvm::Value*, unsigned> > ValueList;
typedef llvm::DenseMap<llvm::Type*, unsigned> TypeMapType;
TypeMapType TypeMap;
TypeList Types;
typedef llvm::DenseMap<const llvm::Value*, unsigned> ValueMapType;
ValueMapType ValueMap;
ValueList Values;
std::vector<const llvm::Metadata *> MDs;
llvm::SmallVector<const llvm::LocalAsMetadata *, 8> FunctionLocalMDs;
typedef llvm::DenseMap<const llvm::Metadata *, unsigned> MetadataMapType;
MetadataMapType MDValueMap;
bool HasMDString;
bool HasDILocation;
typedef llvm::DenseMap<llvm::AttributeSet, unsigned> AttributeGroupMapType;
AttributeGroupMapType AttributeGroupMap;
std::vector<llvm::AttributeSet> AttributeGroups;
typedef llvm::DenseMap<llvm::AttributeSet, unsigned> AttributeMapType;
AttributeMapType AttributeMap;
std::vector<llvm::AttributeSet> Attribute;
/// GlobalBasicBlockIDs - This map memoizes the basic block ID's referenced by
/// the "getGlobalBasicBlockID" method.
mutable llvm::DenseMap<const llvm::BasicBlock*, unsigned> GlobalBasicBlockIDs;
typedef llvm::DenseMap<const llvm::Instruction*, unsigned> InstructionMapType;
InstructionMapType InstructionMap;
unsigned InstructionCount;
/// BasicBlocks - This contains all the basic blocks for the currently
/// incorporated function. Their reverse mapping is stored in ValueMap.
std::vector<const llvm::BasicBlock*> BasicBlocks;
/// When a function is incorporated, this is the size of the Values list
/// before incorporation.
unsigned NumModuleValues;
/// When a function is incorporated, this is the size of the MDValues list
/// before incorporation.
unsigned NumModuleMDs;
unsigned FirstFuncConstantID;
unsigned FirstInstID;
ValueEnumerator(const ValueEnumerator &) = delete;
void operator=(const ValueEnumerator &) = delete;
explicit ValueEnumerator(const llvm::Module &M);
void dump() const;
void print(llvm::raw_ostream &OS, const ValueMapType &Map, const char *Name) const;
void print(llvm::raw_ostream &OS, const MetadataMapType &Map,
const char *Name) const;
unsigned getValueID(const llvm::Value *V) const;
unsigned getMetadataID(const llvm::Metadata *MD) const {
auto ID = getMetadataOrNullID(MD);
assert(ID != 0 && "Metadata not in slotcalculator!");
return ID - 1;
unsigned getMetadataOrNullID(const llvm::Metadata *MD) const {
return MDValueMap.lookup(MD);
bool hasMDString() const { return HasMDString; }
bool hasDILocation() const { return HasDILocation; }
unsigned getTypeID(llvm::Type *T) const {
TypeMapType::const_iterator I = TypeMap.find(T);
assert(I != TypeMap.end() && "Type not in ValueEnumerator!");
return I->second-1;
unsigned getInstructionID(const llvm::Instruction *I) const;
void setInstructionID(const llvm::Instruction *I);
unsigned getAttributeID(llvm::AttributeSet PAL) const {
if (PAL.isEmpty()) return 0; // Null maps to zero.
AttributeMapType::const_iterator I = AttributeMap.find(PAL);
assert(I != AttributeMap.end() && "Attribute not in ValueEnumerator!");
return I->second;
unsigned getAttributeGroupID(llvm::AttributeSet PAL) const {
if (PAL.isEmpty()) return 0; // Null maps to zero.
AttributeGroupMapType::const_iterator I = AttributeGroupMap.find(PAL);
assert(I != AttributeGroupMap.end() && "Attribute not in ValueEnumerator!");
return I->second;
/// getFunctionConstantRange - Return the range of values that corresponds to
/// function-local constants.
void getFunctionConstantRange(unsigned &Start, unsigned &End) const {
Start = FirstFuncConstantID;
End = FirstInstID;
const ValueList &getValues() const { return Values; }
const std::vector<const llvm::Metadata *> &getMDs() const { return MDs; }
const llvm::SmallVectorImpl<const llvm::LocalAsMetadata *> &getFunctionLocalMDs() const {
return FunctionLocalMDs;
const TypeList &getTypes() const { return Types; }
const std::vector<const llvm::BasicBlock*> &getBasicBlocks() const {
return BasicBlocks;
const std::vector<llvm::AttributeSet> &getAttributes() const {
return Attribute;
const std::vector<llvm::AttributeSet> &getAttributeGroups() const {
return AttributeGroups;
/// getGlobalBasicBlockID - This returns the function-specific ID for the
/// specified basic block. This is relatively expensive information, so it
/// should only be used by rare constructs such as address-of-label.
unsigned getGlobalBasicBlockID(const llvm::BasicBlock *BB) const;
/// incorporateFunction/purgeFunction - If you'd like to deal with a function,
/// use these two methods to get its data into the ValueEnumerator!
void incorporateFunction(const llvm::Function &F);
void purgeFunction();
void OptimizeConstants(unsigned CstStart, unsigned CstEnd);
void EnumerateMDNodeOperands(const llvm::MDNode *N);
void EnumerateMetadata(const llvm::Metadata *MD);
void EnumerateFunctionLocalMetadata(const llvm::LocalAsMetadata *Local);
void EnumerateNamedMDNode(const llvm::NamedMDNode *NMD);
void EnumerateValue(const llvm::Value *V);
void EnumerateType(llvm::Type *T);
void EnumerateOperandType(const llvm::Value *V);
void EnumerateAttributes(llvm::AttributeSet PAL);
void EnumerateValueSymbolTable(const llvm::ValueSymbolTable &ST);
void EnumerateNamedMetadata(const llvm::Module &M);
} // End llvm_2_9_func namespace