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//===-- llvm/CodeGen/DwarfCompileUnit.h - Dwarf Compile Unit ---*- C++ -*--===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains support for writing dwarf compile unit.
//
//===----------------------------------------------------------------------===//
#ifndef CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
#define CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
#include "DIE.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/OwningPtr.h"
namespace llvm {
//===----------------------------------------------------------------------===//
/// CompileUnit - This dwarf writer support class manages information associate
/// with a source file.
class CompileUnit {
/// ID - File identifier for source.
///
unsigned ID;
/// Die - Compile unit debug information entry.
///
const OwningPtr<DIE> CUDie;
/// IndexTyDie - An anonymous type for index type. Owned by CUDie.
DIE *IndexTyDie;
/// MDNodeToDieMap - Tracks the mapping of unit level debug informaton
/// variables to debug information entries.
DenseMap<const MDNode *, DIE *> MDNodeToDieMap;
/// MDNodeToDIEEntryMap - Tracks the mapping of unit level debug informaton
/// descriptors to debug information entries using a DIEEntry proxy.
DenseMap<const MDNode *, DIEEntry *> MDNodeToDIEEntryMap;
/// Globals - A map of globally visible named entities for this unit.
///
StringMap<DIE*> Globals;
/// GlobalTypes - A map of globally visible types for this unit.
///
StringMap<DIE*> GlobalTypes;
public:
CompileUnit(unsigned I, DIE *D)
: ID(I), CUDie(D), IndexTyDie(0) {}
// Accessors.
unsigned getID() const { return ID; }
DIE* getCUDie() const { return CUDie.get(); }
const StringMap<DIE*> &getGlobals() const { return Globals; }
const StringMap<DIE*> &getGlobalTypes() const { return GlobalTypes; }
/// hasContent - Return true if this compile unit has something to write out.
///
bool hasContent() const { return !CUDie->getChildren().empty(); }
/// addGlobal - Add a new global entity to the compile unit.
///
void addGlobal(StringRef Name, DIE *Die) { Globals[Name] = Die; }
/// addGlobalType - Add a new global type to the compile unit.
///
void addGlobalType(StringRef Name, DIE *Die) {
GlobalTypes[Name] = Die;
}
/// getDIE - Returns the debug information entry map slot for the
/// specified debug variable.
DIE *getDIE(const MDNode *N) { return MDNodeToDieMap.lookup(N); }
/// insertDIE - Insert DIE into the map.
void insertDIE(const MDNode *N, DIE *D) {
MDNodeToDieMap.insert(std::make_pair(N, D));
}
/// getDIEEntry - Returns the debug information entry for the speciefied
/// debug variable.
DIEEntry *getDIEEntry(const MDNode *N) {
DenseMap<const MDNode *, DIEEntry *>::iterator I =
MDNodeToDIEEntryMap.find(N);
if (I == MDNodeToDIEEntryMap.end())
return NULL;
return I->second;
}
/// insertDIEEntry - Insert debug information entry into the map.
void insertDIEEntry(const MDNode *N, DIEEntry *E) {
MDNodeToDIEEntryMap.insert(std::make_pair(N, E));
}
/// addDie - Adds or interns the DIE to the compile unit.
///
void addDie(DIE *Buffer) {
this->CUDie->addChild(Buffer);
}
// getIndexTyDie - Get an anonymous type for index type.
DIE *getIndexTyDie() {
return IndexTyDie;
}
// setIndexTyDie - Set D as anonymous type for index which can be reused
// later.
void setIndexTyDie(DIE *D) {
IndexTyDie = D;
}
};
} // end llvm namespace
#endif
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