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//===-- llvm/CodeGen/DwarfFile.h - Dwarf Debug Framework -------*- C++ -*--===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFFILE_H
#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFFILE_H
#include "AddressPool.h"
#include "DwarfStringPool.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/Support/Allocator.h"
#include <memory>
#include <string>
#include <vector>
namespace llvm {
class AsmPrinter;
class DbgVariable;
class DwarfUnit;
class DIEAbbrev;
class MCSymbol;
class DIE;
class DISubprogram;
class LexicalScope;
class StringRef;
class DwarfDebug;
class MCSection;
class DwarfFile {
// Target of Dwarf emission, used for sizing of abbreviations.
AsmPrinter *Asm;
DwarfDebug ⅅ
// Used to uniquely define abbreviations.
FoldingSet<DIEAbbrev> AbbreviationsSet;
// A list of all the unique abbreviations in use.
std::vector<DIEAbbrev *> Abbreviations;
// A pointer to all units in the section.
SmallVector<std::unique_ptr<DwarfUnit>, 1> CUs;
DwarfStringPool StrPool;
// Collection of dbg variables of a scope.
DenseMap<LexicalScope *, SmallVector<DbgVariable *, 8>> ScopeVariables;
// Collection of abstract subprogram DIEs.
DenseMap<const MDNode *, DIE *> AbstractSPDies;
/// Maps MDNodes for type system with the corresponding DIEs. These DIEs can
/// be shared across CUs, that is why we keep the map here instead
/// of in DwarfCompileUnit.
DenseMap<const MDNode *, DIE *> MDTypeNodeToDieMap;
public:
DwarfFile(AsmPrinter *AP, DwarfDebug &DD, StringRef Pref,
BumpPtrAllocator &DA);
~DwarfFile();
const SmallVectorImpl<std::unique_ptr<DwarfUnit>> &getUnits() { return CUs; }
/// \brief Compute the size and offset of a DIE given an incoming Offset.
unsigned computeSizeAndOffset(DIE &Die, unsigned Offset);
/// \brief Compute the size and offset of all the DIEs.
void computeSizeAndOffsets();
/// \brief Define a unique number for the abbreviation.
void assignAbbrevNumber(DIEAbbrev &Abbrev);
/// \brief Add a unit to the list of CUs.
void addUnit(std::unique_ptr<DwarfUnit> U);
/// \brief Emit all of the units to the section listed with the given
/// abbreviation section.
void emitUnits(const MCSymbol *ASectionSym);
/// \brief Emit a set of abbreviations to the specific section.
void emitAbbrevs(const MCSection *);
/// \brief Emit all of the strings to the section given.
void emitStrings(const MCSection *StrSection,
const MCSection *OffsetSection = nullptr);
/// \brief Returns the string pool.
DwarfStringPool &getStringPool() { return StrPool; }
/// \returns false if the variable was merged with a previous one.
bool addScopeVariable(LexicalScope *LS, DbgVariable *Var);
DenseMap<LexicalScope *, SmallVector<DbgVariable *, 8>> &getScopeVariables() {
return ScopeVariables;
}
DenseMap<const MDNode *, DIE *> &getAbstractSPDies() {
return AbstractSPDies;
}
void insertDIE(const MDNode *TypeMD, DIE *Die) {
MDTypeNodeToDieMap.insert(std::make_pair(TypeMD, Die));
}
DIE *getDIE(const MDNode *TypeMD) {
return MDTypeNodeToDieMap.lookup(TypeMD);
}
};
}
#endif
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