path: root/lib/IR/DebugInfo.cpp

//===--- DebugInfo.cpp - Debug Information Helper Classes -----------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the helper classes used to build and interpret debug
// information in LLVM IR form.
//
//===----------------------------------------------------------------------===//

#include "llvm/DebugInfo.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/ValueHandle.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
using namespace llvm::dwarf;

//===----------------------------------------------------------------------===//
// DIDescriptor
//===----------------------------------------------------------------------===//

DIDescriptor::DIDescriptor(const DIFile F) : DbgNode(F.DbgNode) {
}

DIDescriptor::DIDescriptor(const DISubprogram F) : DbgNode(F.DbgNode) {
}

DIDescriptor::DIDescriptor(const DILexicalBlockFile F) : DbgNode(F.DbgNode) {
}

DIDescriptor::DIDescriptor(const DILexicalBlock F) : DbgNode(F.DbgNode) {
}

DIDescriptor::DIDescriptor(const DIVariable F) : DbgNode(F.DbgNode) {
}

DIDescriptor::DIDescriptor(const DIType F) : DbgNode(F.DbgNode) {
}

bool DIDescriptor::Verify() const {
  return DbgNode &&
         (DIDerivedType(DbgNode).Verify() ||
          DICompositeType(DbgNode).Verify() || DIBasicType(DbgNode).Verify() ||
          DIVariable(DbgNode).Verify() || DISubprogram(DbgNode).Verify() ||
          DIGlobalVariable(DbgNode).Verify() || DIFile(DbgNode).Verify() ||
          DICompileUnit(DbgNode).Verify() || DINameSpace(DbgNode).Verify() ||
          DILexicalBlock(DbgNode).Verify() ||
          DILexicalBlockFile(DbgNode).Verify() ||
          DISubrange(DbgNode).Verify() || DIEnumerator(DbgNode).Verify() ||
          DIObjCProperty(DbgNode).Verify() ||
          DITemplateTypeParameter(DbgNode).Verify() ||
          DITemplateValueParameter(DbgNode).Verify() ||
          DIImportedEntity(DbgNode).Verify());
}

static Value *getField(const MDNode *DbgNode, unsigned Elt) {
  if (DbgNode == 0 || Elt >= DbgNode->getNumOperands())
    return 0;
  return DbgNode->getOperand(Elt);
}

static const MDNode *getNodeField(const MDNode *DbgNode, unsigned