lib/CodeGen/AsmPrinter/DIE.cpp - llvm - Git at Google

 //===--- lib/CodeGen/DIE.cpp - DWARF Info Entries -------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // Data structures for DWARF info entries.
 //
 //===----------------------------------------------------------------------===//

 #include "DIE.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/CodeGen/AsmPrinter.h"
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Support/Allocator.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/Format.h"
 #include "llvm/Support/FormattedStream.h"
 using namespace llvm;

 //===----------------------------------------------------------------------===//
 // DIEAbbrevData Implementation
 //===----------------------------------------------------------------------===//

 /// Profile - Used to gather unique data for the abbreviation folding set.
 ///
 void DIEAbbrevData::Profile(FoldingSetNodeID &ID) const {
   ID.AddInteger(Attribute);
   ID.AddInteger(Form);
 }

 //===----------------------------------------------------------------------===//
 // DIEAbbrev Implementation
 //===----------------------------------------------------------------------===//

 /// Profile - Used to gather unique data for the abbreviation folding set.
 ///
 void DIEAbbrev::Profile(FoldingSetNodeID &ID) const {
   ID.AddInteger(Tag);
   ID.AddInteger(ChildrenFlag);

   // For each attribute description.
   for (unsigned i = 0, N = Data.size(); i < N; ++i)
     Data[i].Profile(ID);
 }

 /// Emit - Print the abbreviation using the specified asm printer.
 ///
 void DIEAbbrev::Emit(AsmPrinter *AP) const {
   // Emit its Dwarf tag type.
   // FIXME: Doing work even in non-asm-verbose runs.
   AP->EmitULEB128(Tag, dwarf::TagString(Tag));

   // Emit whether it has children DIEs.
   // FIXME: Doing work even in non-asm-verbose runs.
   AP->EmitULEB128(ChildrenFlag, dwarf::ChildrenString(ChildrenFlag));

   // For each attribute description.
   for (unsigned i = 0, N = Data.size(); i < N; ++i) {
     const DIEAbbrevData &AttrData = Data[i];

     // Emit attribute type.
     // FIXME: Doing work even in non-asm-verbose runs.
     AP->EmitULEB128(AttrData.getAttribute(),
                     dwarf::AttributeString(AttrData.getAttribute()));

     // Emit form type.
     // FIXME: Doing work even in non-asm-verbose runs.
     AP->EmitULEB128(AttrData.getForm(),
                     dwarf::FormEncodingString(AttrData.getForm()));
   }

   // Mark end of abbreviation.
   AP->EmitULEB128(0, "EOM(1)");
   AP->EmitULEB128(0, "EOM(2)");
 }

 #ifndef NDEBUG
 void DIEAbbrev::print(raw_ostream &O) {
   O << "Abbreviation @"
     << format("0x%lx", (long)(intptr_t)this)
     << "  "
     << dwarf::TagString(Tag)
     << " "
     << dwarf::ChildrenString(ChildrenFlag)
     << '\n';

   for (unsigned i = 0, N = Data.size(); i < N; ++i) {
     O << "  "
       << dwarf::AttributeString(Data[i].getAttribute())
       << "  "
       << dwarf::FormEncodingString(Data[i].getForm())
       << '\n';
   }
 }
 void DIEAbbrev::dump() { print(dbgs()); }
 #endif

 //===----------------------------------------------------------------------===//
 // DIE Implementation
 //===----------------------------------------------------------------------===//

 DIE::~DIE() {
   for (unsigned i = 0, N = Children.size(); i < N; ++i)
     delete Children[i];
 }

 /// addSiblingOffset - Add a sibling offset field to the front of the DIE.
 ///
 DIEValue *DIE::addSiblingOffset(BumpPtrAllocator &A) {
   DIEInteger *DI = new (A) DIEInteger(0);
   Values.insert(Values.begin(), DI);
   Abbrev.AddFirstAttribute(dwarf::DW_AT_sibling, dwarf::DW_FORM_ref4);
   return DI;
 }

 #ifndef NDEBUG
 void DIE::print(raw_ostream &O, unsigned IncIndent) {
   IndentCount += IncIndent;
   const std::string Indent(IndentCount, ' ');
   bool isBlock = Abbrev.getTag() == 0;

   if (!isBlock) {
     O << Indent
       << "Die: "
       << format("0x%lx", (long)(intptr_t)this)
       << ", Offset: " << Offset
       << ", Size: " << Size << "\n";

     O << Indent
       << dwarf::TagString(Abbrev.getTag())
       << " "
       << dwarf::ChildrenString(Abbrev.getChildrenFlag()) << "\n";
   } else {
     O << "Size: " << Size << "\n";
   }

   const SmallVector<DIEAbbrevData, 8> &Data = Abbrev.getData();

   IndentCount += 2;
   for (unsigned i = 0, N = Data.size(); i < N; ++i) {
     O << Indent;

     if (!isBlock)
       O << dwarf::AttributeString(Data[i].getAttribute());
     else
       O << "Blk[" << i << "]";

     O <<  "  "
       << dwarf::FormEncodingString(Data[i].getForm())
       << " ";
     Values[i]->print(O);
     O << "\n";
   }
   IndentCount -= 2;

   for (unsigned j = 0, M = Children.size(); j < M; ++j) {
     Children[j]->print(O, 4);
   }

   if (!isBlock) O << "\n";
   IndentCount -= IncIndent;
 }

 void DIE::dump() {
   print(dbgs());
 }
 #endif


 #ifndef NDEBUG
 void DIEValue::dump() {
   print(dbgs());
 }
 #endif

 //===----------------------------------------------------------------------===//
 // DIEInteger Implementation
 //===----------------------------------------------------------------------===//

 /// EmitValue - Emit integer of appropriate size.
 ///
 void DIEInteger::EmitValue(AsmPrinter *Asm, unsigned Form) const {
   unsigned Size = ~0U;
   switch (Form) {
   case dwarf::DW_FORM_flag:  // Fall thru
   case dwarf::DW_FORM_ref1:  // Fall thru
   case dwarf::DW_FORM_data1: Size = 1; break;
   case dwarf::DW_FORM_ref2:  // Fall thru
   case dwarf::DW_FORM_data2: Size = 2; break;
   case dwarf::DW_FORM_ref4:  // Fall thru
   case dwarf::DW_FORM_data4: Size = 4; break;
   case dwarf::DW_FORM_ref8:  // Fall thru
   case dwarf::DW_FORM_data8: Size = 8; break;
   case dwarf::DW_FORM_udata: Asm->EmitULEB128(Integer); return;
   case dwarf::DW_FORM_sdata: Asm->EmitSLEB128(Integer); return;
   case dwarf::DW_FORM_addr:  Size = Asm->getTargetData().getPointerSize(); break;
   default: llvm_unreachable("DIE Value form not supported yet");
   }
   Asm->OutStreamer.EmitIntValue(Integer, Size, 0/*addrspace*/);
 }

 /// SizeOf - Determine size of integer value in bytes.
 ///
 unsigned DIEInteger::SizeOf(AsmPrinter *AP, unsigned Form) const {
   switch (Form) {
   case dwarf::DW_FORM_flag:  // Fall thru
   case dwarf::DW_FORM_ref1:  // Fall thru
   case dwarf::DW_FORM_data1: return sizeof(int8_t);
   case dwarf::DW_FORM_ref2:  // Fall thru
   case dwarf::DW_FORM_data2: return sizeof(int16_t);
   case dwarf::DW_FORM_ref4:  // Fall thru
   case dwarf::DW_FORM_data4: return sizeof(int32_t);
   case dwarf::DW_FORM_ref8:  // Fall thru
   case dwarf::DW_FORM_data8: return sizeof(int64_t);
   case dwarf::DW_FORM_udata: return MCAsmInfo::getULEB128Size(Integer);
   case dwarf::DW_FORM_sdata: return MCAsmInfo::getSLEB128Size(Integer);
   case dwarf::DW_FORM_addr:  return AP->getTargetData().getPointerSize();
   default: llvm_unreachable("DIE Value form not supported yet"); break;
   }
   return 0;
 }

 #ifndef NDEBUG
 void DIEInteger::print(raw_ostream &O) {
   O << "Int: " << (int64_t)Integer
     << format("  0x%llx", (unsigned long long)Integer);
 }
 #endif

 //===----------------------------------------------------------------------===//
 // DIEString Implementation
 //===----------------------------------------------------------------------===//

 /// EmitValue - Emit string value.
 ///
 void DIEString::EmitValue(AsmPrinter *AP, unsigned Form) const {
   AP->OutStreamer.EmitBytes(Str, /*addrspace*/0);
   // Emit nul terminator.
   AP->OutStreamer.EmitIntValue(0, 1, /*addrspace*/0);
 }

 #ifndef NDEBUG
 void DIEString::print(raw_ostream &O) {
   O << "Str: \"" << Str << "\"";
 }
 #endif

 //===----------------------------------------------------------------------===//
 // DIELabel Implementation
 //===----------------------------------------------------------------------===//

 /// EmitValue - Emit label value.
 ///
 void DIELabel::EmitValue(AsmPrinter *AP, unsigned Form) const {
   AP->OutStreamer.EmitSymbolValue(Label, SizeOf(AP, Form), 0/*AddrSpace*/);
 }

 /// SizeOf - Determine size of label value in bytes.
 ///
 unsigned DIELabel::SizeOf(AsmPrinter *AP, unsigned Form) const {
   if (Form == dwarf::DW_FORM_data4) return 4;
   return AP->getTargetData().getPointerSize();
 }

 #ifndef NDEBUG
 void DIELabel::print(raw_ostream &O) {
   O << "Lbl: " << Label->getName();
 }
 #endif

 //===----------------------------------------------------------------------===//
 // DIEDelta Implementation
 //===----------------------------------------------------------------------===//

 /// EmitValue - Emit delta value.
 ///
 void DIEDelta::EmitValue(AsmPrinter *AP, unsigned Form) const {
   AP->EmitLabelDifference(LabelHi, LabelLo, SizeOf(AP, Form));
 }

 /// SizeOf - Determine size of delta value in bytes.
 ///
 unsigned DIEDelta::SizeOf(AsmPrinter *AP, unsigned Form) const {
   if (Form == dwarf::DW_FORM_data4) return 4;
   return AP->getTargetData().getPointerSize();
 }

 #ifndef NDEBUG
 void DIEDelta::print(raw_ostream &O) {
   O << "Del: " << LabelHi->getName() << "-" << LabelLo->getName();
 }
 #endif

 //===----------------------------------------------------------------------===//
 // DIEEntry Implementation
 //===----------------------------------------------------------------------===//

 /// EmitValue - Emit debug information entry offset.
 ///
 void DIEEntry::EmitValue(AsmPrinter *AP, unsigned Form) const {
   AP->EmitInt32(Entry->getOffset());
 }

 #ifndef NDEBUG
 void DIEEntry::print(raw_ostream &O) {
   O << format("Die: 0x%lx", (long)(intptr_t)Entry);
 }
 #endif

 //===----------------------------------------------------------------------===//
 // DIEBlock Implementation
 //===----------------------------------------------------------------------===//

 /// ComputeSize - calculate the size of the block.
 ///
 unsigned DIEBlock::ComputeSize(AsmPrinter *AP) {
   if (!Size) {
     const SmallVector<DIEAbbrevData, 8> &AbbrevData = Abbrev.getData();
     for (unsigned i = 0, N = Values.size(); i < N; ++i)
       Size += Values[i]->SizeOf(AP, AbbrevData[i].getForm());
   }

   return Size;
 }

 /// EmitValue - Emit block data.
 ///
 void DIEBlock::EmitValue(AsmPrinter *Asm, unsigned Form) const {
   switch (Form) {
   default: assert(0 && "Improper form for block");    break;
   case dwarf::DW_FORM_block1: Asm->EmitInt8(Size);    break;
   case dwarf::DW_FORM_block2: Asm->EmitInt16(Size);   break;
   case dwarf::DW_FORM_block4: Asm->EmitInt32(Size);   break;
   case dwarf::DW_FORM_block:  Asm->EmitULEB128(Size); break;
   }

   const SmallVector<DIEAbbrevData, 8> &AbbrevData = Abbrev.getData();
   for (unsigned i = 0, N = Values.size(); i < N; ++i)
     Values[i]->EmitValue(Asm, AbbrevData[i].getForm());
 }

 /// SizeOf - Determine size of block data in bytes.
 ///
 unsigned DIEBlock::SizeOf(AsmPrinter *AP, unsigned Form) const {
   switch (Form) {
   case dwarf::DW_FORM_block1: return Size + sizeof(int8_t);
   case dwarf::DW_FORM_block2: return Size + sizeof(int16_t);
   case dwarf::DW_FORM_block4: return Size + sizeof(int32_t);
   case dwarf::DW_FORM_block:  return Size + MCAsmInfo::getULEB128Size(Size);
   default: llvm_unreachable("Improper form for block"); break;
   }
   return 0;
 }

 #ifndef NDEBUG
 void DIEBlock::print(raw_ostream &O) {
   O << "Blk: ";
   DIE::print(O, 5);
 }
 #endif
	//===--- lib/CodeGen/DIE.cpp - DWARF Info Entries -------------------------===//
	//
	// The LLVM Compiler Infrastructure
	//
	// This file is distributed under the University of Illinois Open Source
	// License. See LICENSE.TXT for details.
	//
	//===----------------------------------------------------------------------===//
	//
	// Data structures for DWARF info entries.
	//
	//===----------------------------------------------------------------------===//

	#include "DIE.h"
	#include "llvm/ADT/Twine.h"
	#include "llvm/CodeGen/AsmPrinter.h"
	#include "llvm/MC/MCAsmInfo.h"
	#include "llvm/MC/MCStreamer.h"
	#include "llvm/MC/MCSymbol.h"
	#include "llvm/Target/TargetData.h"
	#include "llvm/Support/Allocator.h"
	#include "llvm/Support/Debug.h"
	#include "llvm/Support/ErrorHandling.h"
	#include "llvm/Support/Format.h"
	#include "llvm/Support/FormattedStream.h"
	using namespace llvm;

	//===----------------------------------------------------------------------===//
	// DIEAbbrevData Implementation
	//===----------------------------------------------------------------------===//

	/// Profile - Used to gather unique data for the abbreviation folding set.
	///
	void DIEAbbrevData::Profile(FoldingSetNodeID &ID) const {
	ID.AddInteger(Attribute);
	ID.AddInteger(Form);
	}

	//===----------------------------------------------------------------------===//
	// DIEAbbrev Implementation
	//===----------------------------------------------------------------------===//

	/// Profile - Used to gather unique data for the abbreviation folding set.
	///
	void DIEAbbrev::Profile(FoldingSetNodeID &ID) const {
	ID.AddInteger(Tag);
	ID.AddInteger(ChildrenFlag);

	// For each attribute description.
	for (unsigned i = 0, N = Data.size(); i < N; ++i)
	Data[i].Profile(ID);
	}

	/// Emit - Print the abbreviation using the specified asm printer.
	///
	void DIEAbbrev::Emit(AsmPrinter *AP) const {
	// Emit its Dwarf tag type.
	// FIXME: Doing work even in non-asm-verbose runs.
	AP->EmitULEB128(Tag, dwarf::TagString(Tag));

	// Emit whether it has children DIEs.
	// FIXME: Doing work even in non-asm-verbose runs.
	AP->EmitULEB128(ChildrenFlag, dwarf::ChildrenString(ChildrenFlag));

	// For each attribute description.
	for (unsigned i = 0, N = Data.size(); i < N; ++i) {
	const DIEAbbrevData &AttrData = Data[i];

	// Emit attribute type.
	// FIXME: Doing work even in non-asm-verbose runs.
	AP->EmitULEB128(AttrData.getAttribute(),
	dwarf::AttributeString(AttrData.getAttribute()));

	// Emit form type.
	// FIXME: Doing work even in non-asm-verbose runs.
	AP->EmitULEB128(AttrData.getForm(),
	dwarf::FormEncodingString(AttrData.getForm()));
	}

	// Mark end of abbreviation.
	AP->EmitULEB128(0, "EOM(1)");
	AP->EmitULEB128(0, "EOM(2)");
	}

	#ifndef NDEBUG
	void DIEAbbrev::print(raw_ostream &O) {
	O << "Abbreviation @"
	<< format("0x%lx", (long)(intptr_t)this)
	<< " "
	<< dwarf::TagString(Tag)
	<< " "
	<< dwarf::ChildrenString(ChildrenFlag)
	<< '\n';

	for (unsigned i = 0, N = Data.size(); i < N; ++i) {
	O << " "
	<< dwarf::AttributeString(Data[i].getAttribute())
	<< " "
	<< dwarf::FormEncodingString(Data[i].getForm())
	<< '\n';
	}
	}
	void DIEAbbrev::dump() { print(dbgs()); }
	#endif

	//===----------------------------------------------------------------------===//
	// DIE Implementation
	//===----------------------------------------------------------------------===//

	DIE::~DIE() {
	for (unsigned i = 0, N = Children.size(); i < N; ++i)
	delete Children[i];
	}

	/// addSiblingOffset - Add a sibling offset field to the front of the DIE.
	///
	DIEValue *DIE::addSiblingOffset(BumpPtrAllocator &A) {
	DIEInteger *DI = new (A) DIEInteger(0);
	Values.insert(Values.begin(), DI);
	Abbrev.AddFirstAttribute(dwarf::DW_AT_sibling, dwarf::DW_FORM_ref4);
	return DI;
	}

	#ifndef NDEBUG
	void DIE::print(raw_ostream &O, unsigned IncIndent) {
	IndentCount += IncIndent;
	const std::string Indent(IndentCount, ' ');
	bool isBlock = Abbrev.getTag() == 0;

	if (!isBlock) {
	O << Indent
	<< "Die: "
	<< format("0x%lx", (long)(intptr_t)this)
	<< ", Offset: " << Offset
	<< ", Size: " << Size << "\n";

	O << Indent
	<< dwarf::TagString(Abbrev.getTag())
	<< " "
	<< dwarf::ChildrenString(Abbrev.getChildrenFlag()) << "\n";
	} else {
	O << "Size: " << Size << "\n";
	}

	const SmallVector<DIEAbbrevData, 8> &Data = Abbrev.getData();

	IndentCount += 2;
	for (unsigned i = 0, N = Data.size(); i < N; ++i) {
	O << Indent;

	if (!isBlock)
	O << dwarf::AttributeString(Data[i].getAttribute());
	else
	O << "Blk[" << i << "]";

	O << " "
	<< dwarf::FormEncodingString(Data[i].getForm())
	<< " ";
	Values[i]->print(O);
	O << "\n";
	}
	IndentCount -= 2;

	for (unsigned j = 0, M = Children.size(); j < M; ++j) {
	Children[j]->print(O, 4);
	}

	if (!isBlock) O << "\n";
	IndentCount -= IncIndent;
	}

	void DIE::dump() {
	print(dbgs());
	}
	#endif


	#ifndef NDEBUG
	void DIEValue::dump() {
	print(dbgs());
	}
	#endif

	//===----------------------------------------------------------------------===//
	// DIEInteger Implementation
	//===----------------------------------------------------------------------===//

	/// EmitValue - Emit integer of appropriate size.
	///
	void DIEInteger::EmitValue(AsmPrinter *Asm, unsigned Form) const {
	unsigned Size = ~0U;
	switch (Form) {
	case dwarf::DW_FORM_flag: // Fall thru
	case dwarf::DW_FORM_ref1: // Fall thru
	case dwarf::DW_FORM_data1: Size = 1; break;
	case dwarf::DW_FORM_ref2: // Fall thru
	case dwarf::DW_FORM_data2: Size = 2; break;
	case dwarf::DW_FORM_ref4: // Fall thru
	case dwarf::DW_FORM_data4: Size = 4; break;
	case dwarf::DW_FORM_ref8: // Fall thru
	case dwarf::DW_FORM_data8: Size = 8; break;
	case dwarf::DW_FORM_udata: Asm->EmitULEB128(Integer); return;
	case dwarf::DW_FORM_sdata: Asm->EmitSLEB128(Integer); return;
	case dwarf::DW_FORM_addr: Size = Asm->getTargetData().getPointerSize(); break;
	default: llvm_unreachable("DIE Value form not supported yet");
	}
	Asm->OutStreamer.EmitIntValue(Integer, Size, 0/addrspace/);
	}

	/// SizeOf - Determine size of integer value in bytes.
	///
	unsigned DIEInteger::SizeOf(AsmPrinter *AP, unsigned Form) const {
	switch (Form) {
	case dwarf::DW_FORM_flag: // Fall thru
	case dwarf::DW_FORM_ref1: // Fall thru
	case dwarf::DW_FORM_data1: return sizeof(int8_t);
	case dwarf::DW_FORM_ref2: // Fall thru
	case dwarf::DW_FORM_data2: return sizeof(int16_t);
	case dwarf::DW_FORM_ref4: // Fall thru
	case dwarf::DW_FORM_data4: return sizeof(int32_t);
	case dwarf::DW_FORM_ref8: // Fall thru
	case dwarf::DW_FORM_data8: return sizeof(int64_t);
	case dwarf::DW_FORM_udata: return MCAsmInfo::getULEB128Size(Integer);
	case dwarf::DW_FORM_sdata: return MCAsmInfo::getSLEB128Size(Integer);
	case dwarf::DW_FORM_addr: return AP->getTargetData().getPointerSize();
	default: llvm_unreachable("DIE Value form not supported yet"); break;
	}
	return 0;
	}

	#ifndef NDEBUG
	void DIEInteger::print(raw_ostream &O) {
	O << "Int: " << (int64_t)Integer
	<< format(" 0x%llx", (unsigned long long)Integer);
	}
	#endif

	//===----------------------------------------------------------------------===//
	// DIEString Implementation
	//===----------------------------------------------------------------------===//

	/// EmitValue - Emit string value.
	///
	void DIEString::EmitValue(AsmPrinter *AP, unsigned Form) const {
	AP->OutStreamer.EmitBytes(Str, /addrspace/0);
	// Emit nul terminator.
	AP->OutStreamer.EmitIntValue(0, 1, /addrspace/0);
	}

	#ifndef NDEBUG
	void DIEString::print(raw_ostream &O) {
	O << "Str: \"" << Str << "\"";
	}
	#endif

	//===----------------------------------------------------------------------===//
	// DIELabel Implementation
	//===----------------------------------------------------------------------===//

	/// EmitValue - Emit label value.
	///
	void DIELabel::EmitValue(AsmPrinter *AP, unsigned Form) const {
	AP->OutStreamer.EmitSymbolValue(Label, SizeOf(AP, Form), 0/AddrSpace/);
	}

	/// SizeOf - Determine size of label value in bytes.
	///
	unsigned DIELabel::SizeOf(AsmPrinter *AP, unsigned Form) const {
	if (Form == dwarf::DW_FORM_data4) return 4;
	return AP->getTargetData().getPointerSize();
	}

	#ifndef NDEBUG
	void DIELabel::print(raw_ostream &O) {
	O << "Lbl: " << Label->getName();
	}
	#endif

	//===----------------------------------------------------------------------===//
	// DIEDelta Implementation
	//===----------------------------------------------------------------------===//

	/// EmitValue - Emit delta value.
	///
	void DIEDelta::EmitValue(AsmPrinter *AP, unsigned Form) const {
	AP->EmitLabelDifference(LabelHi, LabelLo, SizeOf(AP, Form));
	}

	/// SizeOf - Determine size of delta value in bytes.
	///
	unsigned DIEDelta::SizeOf(AsmPrinter *AP, unsigned Form) const {
	if (Form == dwarf::DW_FORM_data4) return 4;
	return AP->getTargetData().getPointerSize();
	}

	#ifndef NDEBUG
	void DIEDelta::print(raw_ostream &O) {
	O << "Del: " << LabelHi->getName() << "-" << LabelLo->getName();
	}
	#endif

	//===----------------------------------------------------------------------===//
	// DIEEntry Implementation
	//===----------------------------------------------------------------------===//

	/// EmitValue - Emit debug information entry offset.
	///
	void DIEEntry::EmitValue(AsmPrinter *AP, unsigned Form) const {
	AP->EmitInt32(Entry->getOffset());
	}

	#ifndef NDEBUG
	void DIEEntry::print(raw_ostream &O) {
	O << format("Die: 0x%lx", (long)(intptr_t)Entry);
	}
	#endif

	//===----------------------------------------------------------------------===//
	// DIEBlock Implementation
	//===----------------------------------------------------------------------===//

	/// ComputeSize - calculate the size of the block.
	///
	unsigned DIEBlock::ComputeSize(AsmPrinter *AP) {
	if (!Size) {
	const SmallVector<DIEAbbrevData, 8> &AbbrevData = Abbrev.getData();
	for (unsigned i = 0, N = Values.size(); i < N; ++i)
	Size += Values[i]->SizeOf(AP, AbbrevData[i].getForm());
	}

	return Size;
	}

	/// EmitValue - Emit block data.
	///
	void DIEBlock::EmitValue(AsmPrinter *Asm, unsigned Form) const {
	switch (Form) {
	default: assert(0 && "Improper form for block"); break;
	case dwarf::DW_FORM_block1: Asm->EmitInt8(Size); break;
	case dwarf::DW_FORM_block2: Asm->EmitInt16(Size); break;
	case dwarf::DW_FORM_block4: Asm->EmitInt32(Size); break;
	case dwarf::DW_FORM_block: Asm->EmitULEB128(Size); break;
	}

	const SmallVector<DIEAbbrevData, 8> &AbbrevData = Abbrev.getData();
	for (unsigned i = 0, N = Values.size(); i < N; ++i)
	Values[i]->EmitValue(Asm, AbbrevData[i].getForm());
	}

	/// SizeOf - Determine size of block data in bytes.
	///
	unsigned DIEBlock::SizeOf(AsmPrinter *AP, unsigned Form) const {
	switch (Form) {
	case dwarf::DW_FORM_block1: return Size + sizeof(int8_t);
	case dwarf::DW_FORM_block2: return Size + sizeof(int16_t);
	case dwarf::DW_FORM_block4: return Size + sizeof(int32_t);
	case dwarf::DW_FORM_block: return Size + MCAsmInfo::getULEB128Size(Size);
	default: llvm_unreachable("Improper form for block"); break;
	}
	return 0;
	}

	#ifndef NDEBUG
	void DIEBlock::print(raw_ostream &O) {
	O << "Blk: ";
	DIE::print(O, 5);
	}
	#endif