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llvm-mirror/lib/Bitcode/Writer/ValueEnumerator.h
Benjamin Kramer 23f676e21d Revert "Give internal classes hidden visibility."
It works with clang, but GCC has different rules so we can't make all of those
hidden. This reverts commit r190534.

llvm-svn: 190536
2013-09-11 18:05:11 +00:00

172 lines
5.5 KiB
C++

//===-- 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.
//
//===----------------------------------------------------------------------===//
#ifndef VALUE_ENUMERATOR_H
#define VALUE_ENUMERATOR_H
#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 MDNode;
class NamedMDNode;
class AttributeSet;
class ValueSymbolTable;
class MDSymbolTable;
class raw_ostream;
class ValueEnumerator {
public:
typedef std::vector<Type*> TypeList;
// For each value, we remember its Value* and occurrence frequency.
typedef std::vector<std::pair<const Value*, unsigned> > ValueList;
private:
typedef DenseMap<Type*, unsigned> TypeMapType;
TypeMapType TypeMap;
TypeList Types;
typedef DenseMap<const Value*, unsigned> ValueMapType;
ValueMapType ValueMap;
ValueList Values;
ValueList MDValues;
SmallVector<const MDNode *, 8> FunctionLocalMDs;
ValueMapType MDValueMap;
typedef DenseMap<AttributeSet, unsigned> AttributeGroupMapType;
AttributeGroupMapType AttributeGroupMap;
std::vector<AttributeSet> AttributeGroups;
typedef DenseMap<AttributeSet, unsigned> AttributeMapType;
AttributeMapType AttributeMap;
std::vector<AttributeSet> Attribute;
/// GlobalBasicBlockIDs - This map memoizes the basic block ID's referenced by
/// the "getGlobalBasicBlockID" method.
mutable DenseMap<const BasicBlock*, unsigned> GlobalBasicBlockIDs;
typedef DenseMap<const 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 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 NumModuleMDValues;
unsigned FirstFuncConstantID;
unsigned FirstInstID;
ValueEnumerator(const ValueEnumerator &) LLVM_DELETED_FUNCTION;
void operator=(const ValueEnumerator &) LLVM_DELETED_FUNCTION;
public:
ValueEnumerator(const Module *M);
void dump() const;
void print(raw_ostream &OS, const ValueMapType &Map, const char *Name) const;
unsigned getValueID(const Value *V) const;
unsigned getTypeID(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 Instruction *I) const;
void setInstructionID(const Instruction *I);
unsigned getAttributeID(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(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 ValueList &getMDValues() const { return MDValues; }
const SmallVectorImpl<const MDNode *> &getFunctionLocalMDValues() const {
return FunctionLocalMDs;
}
const TypeList &getTypes() const { return Types; }
const std::vector<const BasicBlock*> &getBasicBlocks() const {
return BasicBlocks;
}
const std::vector<AttributeSet> &getAttributes() const {
return Attribute;
}
const std::vector<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 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 Function &F);
void purgeFunction();
private:
void OptimizeConstants(unsigned CstStart, unsigned CstEnd);
void EnumerateMDNodeOperands(const MDNode *N);
void EnumerateMetadata(const Value *MD);
void EnumerateFunctionLocalMetadata(const MDNode *N);
void EnumerateNamedMDNode(const NamedMDNode *NMD);
void EnumerateValue(const Value *V);
void EnumerateType(Type *T);
void EnumerateOperandType(const Value *V);
void EnumerateAttributes(AttributeSet PAL);
void EnumerateValueSymbolTable(const ValueSymbolTable &ST);
void EnumerateNamedMetadata(const Module *M);
};
} // End llvm namespace
#endif