X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FAsmPrinter%2FDwarfCompileUnit.cpp;h=8cef3e2b2513a7adb567636b1a0149966cd04c21;hb=7b87895a6c7307a0ee809659abdaefe4a48b6bc6;hp=372f98da3d9f197b54a5d6228fbbda7a4ed32c13;hpb=3cc42205600b2d3865efd1585d79663c41e048f1;p=oota-llvm.git

diff --git a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 372f98da3d9..8cef3e2b251 100644
--- a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -27,16 +27,18 @@
 #include "llvm/Target/Mangler.h"
 #include "llvm/Target/TargetFrameLowering.h"
 #include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
 #include "llvm/Target/TargetRegisterInfo.h"
 
 using namespace llvm;
 
 /// CompileUnit - Compile unit constructor.
-CompileUnit::CompileUnit(unsigned UID, unsigned L, DIE *D, AsmPrinter *A,
+CompileUnit::CompileUnit(unsigned UID, DIE *D, const MDNode *N, AsmPrinter *A,
                          DwarfDebug *DW, DwarfUnits *DWU)
-  : UniqueID(UID), Language(L), CUDie(D), Asm(A), DD(DW), DU(DWU),
-    IndexTyDie(0) {
+    : UniqueID(UID), Node(N), CUDie(D), Asm(A), DD(DW), DU(DWU), IndexTyDie(0),
+      DebugInfoOffset(0) {
   DIEIntegerOne = new (DIEValueAllocator) DIEInteger(1);
+  insertDIE(N, D);
 }
 
 /// ~CompileUnit - Destructor for compile unit.
@@ -55,7 +57,7 @@ DIEEntry *CompileUnit::createDIEEntry(DIE *Entry) {
 /// getDefaultLowerBound - Return the default lower bound for an array. If the
 /// DWARF version doesn't handle the language, return -1.
 int64_t CompileUnit::getDefaultLowerBound() const {
-  switch (Language) {
+  switch (DICompileUnit(Node).getLanguage()) {
   default:
     break;
 
@@ -97,7 +99,7 @@ int64_t CompileUnit::getDefaultLowerBound() const {
 }
 
 /// addFlag - Add a flag that is true.
-void CompileUnit::addFlag(DIE *Die, unsigned Attribute) {
+void CompileUnit::addFlag(DIE *Die, uint16_t Attribute) {
   if (!DD->useDarwinGDBCompat())
     Die->addValue(Attribute, dwarf::DW_FORM_flag_present,
                   DIEIntegerOne);
@@ -107,8 +109,8 @@ void CompileUnit::addFlag(DIE *Die, unsigned Attribute) {
 
 /// addUInt - Add an unsigned integer attribute data and value.
 ///
-void CompileUnit::addUInt(DIE *Die, unsigned Attribute,
-                          unsigned Form, uint64_t Integer) {
+void CompileUnit::addUInt(DIE *Die, uint16_t Attribute,
+                          uint16_t Form, uint64_t Integer) {
   if (!Form) Form = DIEInteger::BestForm(false, Integer);
   DIEValue *Value = Integer == 1 ?
     DIEIntegerOne : new (DIEValueAllocator) DIEInteger(Integer);
@@ -117,8 +119,8 @@ void CompileUnit::addUInt(DIE *Die, unsigned Attribute,
 
 /// addSInt - Add an signed integer attribute data and value.
 ///
-void CompileUnit::addSInt(DIE *Die, unsigned Attribute,
-                          unsigned Form, int64_t Integer) {
+void CompileUnit::addSInt(DIE *Die, uint16_t Attribute,
+                          uint16_t Form, int64_t Integer) {
   if (!Form) Form = DIEInteger::BestForm(true, Integer);
   DIEValue *Value = new (DIEValueAllocator) DIEInteger(Integer);
   Die->addValue(Attribute, Form, Value);
@@ -129,27 +131,30 @@ void CompileUnit::addSInt(DIE *Die, unsigned Attribute,
 /// more predictable sizes. In the case of split dwarf we emit an index
 /// into another table which gets us the static offset into the string
 /// table.
-void CompileUnit::addString(DIE *Die, unsigned Attribute, StringRef String) {
+void CompileUnit::addString(DIE *Die, uint16_t Attribute, StringRef String) {
+  DIEValue *Value;
+  uint16_t Form;
   if (!DD->useSplitDwarf()) {
     MCSymbol *Symb = DU->getStringPoolEntry(String);
-    DIEValue *Value;
     if (Asm->needsRelocationsForDwarfStringPool())
       Value = new (DIEValueAllocator) DIELabel(Symb);
     else {
       MCSymbol *StringPool = DU->getStringPoolSym();
       Value = new (DIEValueAllocator) DIEDelta(Symb, StringPool);
     }
-    Die->addValue(Attribute, dwarf::DW_FORM_strp, Value);
+    Form = dwarf::DW_FORM_strp;
   } else {
     unsigned idx = DU->getStringPoolIndex(String);
-    DIEValue *Value = new (DIEValueAllocator) DIEInteger(idx);
-    Die->addValue(Attribute, dwarf::DW_FORM_GNU_str_index, Value);
+    Value = new (DIEValueAllocator) DIEInteger(idx);
+    Form = dwarf::DW_FORM_GNU_str_index;
   }
+  DIEValue *Str = new (DIEValueAllocator) DIEString(Value, String);
+  Die->addValue(Attribute, Form, Str);
 }
 
 /// addLocalString - Add a string attribute data and value. This is guaranteed
 /// to be in the local string pool instead of indirected.
-void CompileUnit::addLocalString(DIE *Die, unsigned Attribute,
+void CompileUnit::addLocalString(DIE *Die, uint16_t Attribute,
                                  StringRef String) {
   MCSymbol *Symb = DU->getStringPoolEntry(String);
   DIEValue *Value;
@@ -162,17 +167,58 @@ void CompileUnit::addLocalString(DIE *Die, unsigned Attribute,
   Die->addValue(Attribute, dwarf::DW_FORM_strp, Value);
 }
 
+/// addExpr - Add a Dwarf expression attribute data and value.
+///
+void CompileUnit::addExpr(DIE *Die, uint16_t Attribute, uint16_t Form,
+                          const MCExpr *Expr) {
+  DIEValue *Value = new (DIEValueAllocator) DIEExpr(Expr);
+  Die->addValue(Attribute, Form, Value);
+}
+
 /// addLabel - Add a Dwarf label attribute data and value.
 ///
-void CompileUnit::addLabel(DIE *Die, unsigned Attribute, unsigned Form,
+void CompileUnit::addLabel(DIE *Die, uint16_t Attribute, uint16_t Form,
                            const MCSymbol *Label) {
   DIEValue *Value = new (DIEValueAllocator) DIELabel(Label);
   Die->addValue(Attribute, Form, Value);
 }
 
+/// addLabelAddress - Add a dwarf label attribute data and value using
+/// DW_FORM_addr or DW_FORM_GNU_addr_index.
+///
+void CompileUnit::addLabelAddress(DIE *Die, uint16_t Attribute,
+                                  MCSymbol *Label) {
+  if (!DD->useSplitDwarf()) {
+    if (Label != NULL) {
+      DIEValue *Value = new (DIEValueAllocator) DIELabel(Label);
+      Die->addValue(Attribute, dwarf::DW_FORM_addr, Value);
+    } else {
+      DIEValue *Value = new (DIEValueAllocator) DIEInteger(0);
+      Die->addValue(Attribute, dwarf::DW_FORM_addr, Value);
+    }
+  } else {
+    unsigned idx = DU->getAddrPoolIndex(Label);
+    DIEValue *Value = new (DIEValueAllocator) DIEInteger(idx);
+    Die->addValue(Attribute, dwarf::DW_FORM_GNU_addr_index, Value);
+  }
+}
+
+/// addOpAddress - Add a dwarf op address data and value using the
+/// form given and an op of either DW_FORM_addr or DW_FORM_GNU_addr_index.
+///
+void CompileUnit::addOpAddress(DIE *Die, const MCSymbol *Sym) {
+  if (!DD->useSplitDwarf()) {
+    addUInt(Die, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
+    addLabel(Die, 0, dwarf::DW_FORM_udata, Sym);
+  } else {
+    addUInt(Die, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_addr_index);
+    addUInt(Die, 0, dwarf::DW_FORM_GNU_addr_index, DU->getAddrPoolIndex(Sym));
+  }
+}
+
 /// addDelta - Add a label delta attribute data and value.
 ///
-void CompileUnit::addDelta(DIE *Die, unsigned Attribute, unsigned Form,
+void CompileUnit::addDelta(DIE *Die, uint16_t Attribute, uint16_t Form,
                            const MCSymbol *Hi, const MCSymbol *Lo) {
   DIEValue *Value = new (DIEValueAllocator) DIEDelta(Hi, Lo);
   Die->addValue(Attribute, Form, Value);
@@ -180,14 +226,14 @@ void CompileUnit::addDelta(DIE *Die, unsigned Attribute, unsigned Form,
 
 /// addDIEEntry - Add a DIE attribute data and value.
 ///
-void CompileUnit::addDIEEntry(DIE *Die, unsigned Attribute, unsigned Form,
+void CompileUnit::addDIEEntry(DIE *Die, uint16_t Attribute, uint16_t Form,
                               DIE *Entry) {
   Die->addValue(Attribute, Form, createDIEEntry(Entry));
 }
 
 /// addBlock - Add block data.
 ///
-void CompileUnit::addBlock(DIE *Die, unsigned Attribute, unsigned Form,
+void CompileUnit::addBlock(DIE *Die, uint16_t Attribute, uint16_t Form,
                            DIEBlock *Block) {
   Block->ComputeSize(Asm);
   DIEBlocks.push_back(Block); // Memoize so we can call the destructor later on.
@@ -198,14 +244,15 @@ void CompileUnit::addBlock(DIE *Die, unsigned Attribute, unsigned Form,
 /// entry.
 void CompileUnit::addSourceLine(DIE *Die, DIVariable V) {
   // Verify variable.
-  if (!V.Verify())
+  if (!V.isVariable())
     return;
 
   unsigned Line = V.getLineNumber();
   if (Line == 0)
     return;
   unsigned FileID = DD->getOrCreateSourceID(V.getContext().getFilename(),
-                                            V.getContext().getDirectory());
+                                            V.getContext().getDirectory(),
+                                            getUniqueID());
   assert(FileID && "Invalid file id");
   addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID);
   addUInt(Die, dwarf::DW_AT_decl_line, 0, Line);
@@ -215,13 +262,14 @@ void CompileUnit::addSourceLine(DIE *Die, DIVariable V) {
 /// entry.
 void CompileUnit::addSourceLine(DIE *Die, DIGlobalVariable G) {
   // Verify global variable.
-  if (!G.Verify())
+  if (!G.isGlobalVariable())
     return;
 
   unsigned Line = G.getLineNumber();
   if (Line == 0)
     return;
-  unsigned FileID = DD->getOrCreateSourceID(G.getFilename(), G.getDirectory());
+  unsigned FileID = DD->getOrCreateSourceID(G.getFilename(), G.getDirectory(),
+                                            getUniqueID());
   assert(FileID && "Invalid file id");
   addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID);
   addUInt(Die, dwarf::DW_AT_decl_line, 0, Line);
@@ -231,7 +279,7 @@ void CompileUnit::addSourceLine(DIE *Die, DIGlobalVariable G) {
 /// entry.
 void CompileUnit::addSourceLine(DIE *Die, DISubprogram SP) {
   // Verify subprogram.
-  if (!SP.Verify())
+  if (!SP.isSubprogram())
     return;
 
   // If the line number is 0, don't add it.
@@ -240,7 +288,7 @@ void CompileUnit::addSourceLine(DIE *Die, DISubprogram SP) {
     return;
 
   unsigned FileID = DD->getOrCreateSourceID(SP.getFilename(),
-                                            SP.getDirectory());
+                                            SP.getDirectory(), getUniqueID());
   assert(FileID && "Invalid file id");
   addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID);
   addUInt(Die, dwarf::DW_AT_decl_line, 0, Line);
@@ -250,14 +298,14 @@ void CompileUnit::addSourceLine(DIE *Die, DISubprogram SP) {
 /// entry.
 void CompileUnit::addSourceLine(DIE *Die, DIType Ty) {
   // Verify type.
-  if (!Ty.Verify())
+  if (!Ty.isType())
     return;
 
   unsigned Line = Ty.getLineNumber();
   if (Line == 0)
     return;
   unsigned FileID = DD->getOrCreateSourceID(Ty.getFilename(),
-                                            Ty.getDirectory());
+                                            Ty.getDirectory(), getUniqueID());
   assert(FileID && "Invalid file id");
   addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID);
   addUInt(Die, dwarf::DW_AT_decl_line, 0, Line);
@@ -267,7 +315,7 @@ void CompileUnit::addSourceLine(DIE *Die, DIType Ty) {
 /// entry.
 void CompileUnit::addSourceLine(DIE *Die, DIObjCProperty Ty) {
   // Verify type.
-  if (!Ty.Verify())
+  if (!Ty.isObjCProperty())
     return;
 
   unsigned Line = Ty.getLineNumber();
@@ -275,7 +323,7 @@ void CompileUnit::addSourceLine(DIE *Die, DIObjCProperty Ty) {
     return;
   DIFile File = Ty.getFile();
   unsigned FileID = DD->getOrCreateSourceID(File.getFilename(),
-                                            File.getDirectory());
+                                            File.getDirectory(), getUniqueID());
   assert(FileID && "Invalid file id");
   addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID);
   addUInt(Die, dwarf::DW_AT_decl_line, 0, Line);
@@ -293,7 +341,8 @@ void CompileUnit::addSourceLine(DIE *Die, DINameSpace NS) {
     return;
   StringRef FN = NS.getFilename();
 
-  unsigned FileID = DD->getOrCreateSourceID(FN, NS.getDirectory());
+  unsigned FileID = DD->getOrCreateSourceID(FN, NS.getDirectory(),
+                                            getUniqueID());
   assert(FileID && "Invalid file id");
   addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID);
   addUInt(Die, dwarf::DW_AT_decl_line, 0, Line);
@@ -301,14 +350,15 @@ void CompileUnit::addSourceLine(DIE *Die, DINameSpace NS) {
 
 /// addVariableAddress - Add DW_AT_location attribute for a
 /// DbgVariable based on provided MachineLocation.
-void CompileUnit::addVariableAddress(DbgVariable *&DV, DIE *Die,
+void CompileUnit::addVariableAddress(const DbgVariable &DV, DIE *Die,
                                      MachineLocation Location) {
-  if (DV->variableHasComplexAddress())
+  if (DV.variableHasComplexAddress())
     addComplexAddress(DV, Die, dwarf::DW_AT_location, Location);
-  else if (DV->isBlockByrefVariable())
+  else if (DV.isBlockByrefVariable())
     addBlockByrefAddress(DV, Die, dwarf::DW_AT_location, Location);
   else
-    addAddress(Die, dwarf::DW_AT_location, Location);
+    addAddress(Die, dwarf::DW_AT_location, Location,
+               DV.getVariable().isIndirect());
 }
 
 /// addRegisterOp - Add register operand.
@@ -343,14 +393,18 @@ void CompileUnit::addRegisterOffset(DIE *TheDie, unsigned Reg,
 
 /// addAddress - Add an address attribute to a die based on the location
 /// provided.
-void CompileUnit::addAddress(DIE *Die, unsigned Attribute,
-                             const MachineLocation &Location) {
+void CompileUnit::addAddress(DIE *Die, uint16_t Attribute,
+                             const MachineLocation &Location, bool Indirect) {
   DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
 
-  if (Location.isReg())
+  if (Location.isReg() && !Indirect)
     addRegisterOp(Block, Location.getReg());
-  else
+  else {
     addRegisterOffset(Block, Location.getReg(), Location.getOffset());
+    if (Indirect && !Location.isReg()) {
+      addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
+    }
+  }
 
   // Now attach the location information to the DIE.
   addBlock(Die, Attribute, 0, Block);
@@ -361,17 +415,17 @@ void CompileUnit::addAddress(DIE *Die, unsigned Attribute,
 /// given the extra address information encoded in the DIVariable, starting from
 /// the starting location.  Add the DWARF information to the die.
 ///
-void CompileUnit::addComplexAddress(DbgVariable *&DV, DIE *Die,
-                                    unsigned Attribute,
+void CompileUnit::addComplexAddress(const DbgVariable &DV, DIE *Die,
+                                    uint16_t Attribute,
                                     const MachineLocation &Location) {
   DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
-  unsigned N = DV->getNumAddrElements();
+  unsigned N = DV.getNumAddrElements();
   unsigned i = 0;
   if (Location.isReg()) {
-    if (N >= 2 && DV->getAddrElement(0) == DIBuilder::OpPlus) {
+    if (N >= 2 && DV.getAddrElement(0) == DIBuilder::OpPlus) {
       // If first address element is OpPlus then emit
       // DW_OP_breg + Offset instead of DW_OP_reg + Offset.
-      addRegisterOffset(Block, Location.getReg(), DV->getAddrElement(1));
+      addRegisterOffset(Block, Location.getReg(), DV.getAddrElement(1));
       i = 2;
     } else
       addRegisterOp(Block, Location.getReg());
@@ -380,10 +434,10 @@ void CompileUnit::addComplexAddress(DbgVariable *&DV, DIE *Die,
     addRegisterOffset(Block, Location.getReg(), Location.getOffset());
 
   for (;i < N; ++i) {
-    uint64_t Element = DV->getAddrElement(i);
+    uint64_t Element = DV.getAddrElement(i);
     if (Element == DIBuilder::OpPlus) {
       addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
-      addUInt(Block, 0, dwarf::DW_FORM_udata, DV->getAddrElement(++i));
+      addUInt(Block, 0, dwarf::DW_FORM_udata, DV.getAddrElement(++i));
     } else if (Element == DIBuilder::OpDeref) {
       if (!Location.isReg())
         addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
@@ -454,15 +508,15 @@ void CompileUnit::addComplexAddress(DbgVariable *&DV, DIE *Die,
 /// starting location.  Add the DWARF information to the die.  For
 /// more information, read large comment just above here.
 ///
-void CompileUnit::addBlockByrefAddress(DbgVariable *&DV, DIE *Die,
-                                       unsigned Attribute,
+void CompileUnit::addBlockByrefAddress(const DbgVariable &DV, DIE *Die,
+                                       uint16_t Attribute,
                                        const MachineLocation &Location) {
-  DIType Ty = DV->getType();
+  DIType Ty = DV.getType();
   DIType TmpTy = Ty;
-  unsigned Tag = Ty.getTag();
+  uint16_t Tag = Ty.getTag();
   bool isPointer = false;
 
-  StringRef varName = DV->getName();
+  StringRef varName = DV.getName();
 
   if (Tag == dwarf::DW_TAG_pointer_type) {
     DIDerivedType DTy = DIDerivedType(Ty);
@@ -546,13 +600,16 @@ static bool isTypeSigned(DIType Ty, int *SizeInBits) {
 }
 
 /// addConstantValue - Add constant value entry in variable DIE.
-bool CompileUnit::addConstantValue(DIE *Die, const MachineOperand &MO,
+void CompileUnit::addConstantValue(DIE *Die, const MachineOperand &MO,
                                    DIType Ty) {
+  // FIXME: This is a bit conservative/simple - it emits negative values at
+  // their maximum bit width which is a bit unfortunate (& doesn't prefer
+  // udata/sdata over dataN as suggested by the DWARF spec)
   assert(MO.isImm() && "Invalid machine operand!");
   DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
   int SizeInBits = -1;
   bool SignedConstant = isTypeSigned(Ty, &SizeInBits);
-  unsigned Form = SignedConstant ? dwarf::DW_FORM_sdata : dwarf::DW_FORM_udata;
+  uint16_t Form = SignedConstant ? dwarf::DW_FORM_sdata : dwarf::DW_FORM_udata;
   switch (SizeInBits) {
     case 8:  Form = dwarf::DW_FORM_data1; break;
     case 16: Form = dwarf::DW_FORM_data2; break;
@@ -564,11 +621,10 @@ bool CompileUnit::addConstantValue(DIE *Die, const MachineOperand &MO,
     : addUInt(Block, 0, Form, MO.getImm());
 
   addBlock(Die, dwarf::DW_AT_const_value, 0, Block);
-  return true;
 }
 
 /// addConstantFPValue - Add constant value entry in variable DIE.
-bool CompileUnit::addConstantFPValue(DIE *Die, const MachineOperand &MO) {
+void CompileUnit::addConstantFPValue(DIE *Die, const MachineOperand &MO) {
   assert (MO.isFPImm() && "Invalid machine operand!");
   DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
   APFloat FPImm = MO.getFPImm()->getValueAPF();
@@ -589,13 +645,22 @@ bool CompileUnit::addConstantFPValue(DIE *Die, const MachineOperand &MO) {
             (unsigned char)0xFF & FltPtr[Start]);
 
   addBlock(Die, dwarf::DW_AT_const_value, 0, Block);
-  return true;
+}
+
+/// addConstantFPValue - Add constant value entry in variable DIE.
+void CompileUnit::addConstantFPValue(DIE *Die, const ConstantFP *CFP) {
+  addConstantValue(Die, CFP->getValueAPF().bitcastToAPInt(), false);
 }
 
 /// addConstantValue - Add constant value entry in variable DIE.
-bool CompileUnit::addConstantValue(DIE *Die, const ConstantInt *CI,
+void CompileUnit::addConstantValue(DIE *Die, const ConstantInt *CI,
                                    bool Unsigned) {
-  unsigned CIBitWidth = CI->getBitWidth();
+  addConstantValue(Die, CI->getValue(), Unsigned);
+}
+
+// addConstantValue - Add constant value entry in variable DIE.
+void CompileUnit::addConstantValue(DIE *Die, const APInt &Val, bool Unsigned) {
+  unsigned CIBitWidth = Val.getBitWidth();
   if (CIBitWidth <= 64) {
     unsigned form = 0;
     switch (CIBitWidth) {
@@ -607,16 +672,15 @@ bool CompileUnit::addConstantValue(DIE *Die, const ConstantInt *CI,
       form = Unsigned ? dwarf::DW_FORM_udata : dwarf::DW_FORM_sdata;
     }
     if (Unsigned)
-      addUInt(Die, dwarf::DW_AT_const_value, form, CI->getZExtValue());
+      addUInt(Die, dwarf::DW_AT_const_value, form, Val.getZExtValue());
     else
-      addSInt(Die, dwarf::DW_AT_const_value, form, CI->getSExtValue());
-    return true;
+      addSInt(Die, dwarf::DW_AT_const_value, form, Val.getSExtValue());
+    return;
   }
 
   DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
 
   // Get the raw data form of the large APInt.
-  const APInt Val = CI->getValue();
   const uint64_t *Ptr64 = Val.getRawData();
 
   int NumBytes = Val.getBitWidth() / 8; // 8 bits per byte.
@@ -633,10 +697,9 @@ bool CompileUnit::addConstantValue(DIE *Die, const ConstantInt *CI,
   }
 
   addBlock(Die, dwarf::DW_AT_const_value, 0, Block);
-  return true;
 }
 
-/// addTemplateParams - Add template parameters in buffer.
+/// addTemplateParams - Add template parameters into buffer.
 void CompileUnit::addTemplateParams(DIE &Buffer, DIArray TParams) {
   // Add template parameters.
   for (unsigned i = 0, e = TParams.getNumElements(); i != e; ++i) {
@@ -650,18 +713,21 @@ void CompileUnit::addTemplateParams(DIE &Buffer, DIArray TParams) {
   }
 }
 
+/// getOrCreateContextDIE - Get context owner's DIE.
+DIE *CompileUnit::getOrCreateContextDIE(DIDescriptor Context) {
+  if (Context.isType())
+    return getOrCreateTypeDIE(DIType(Context));
+  else if (Context.isNameSpace())
+    return getOrCreateNameSpace(DINameSpace(Context));
+  else if (Context.isSubprogram())
+    return getOrCreateSubprogramDIE(DISubprogram(Context));
+  else
+    return getDIE(Context);
+}
+
 /// addToContextOwner - Add Die into the list of its context owner's children.
 void CompileUnit::addToContextOwner(DIE *Die, DIDescriptor Context) {
-  if (Context.isType()) {
-    DIE *ContextDIE = getOrCreateTypeDIE(DIType(Context));
-    ContextDIE->addChild(Die);
-  } else if (Context.isNameSpace()) {
-    DIE *ContextDIE = getOrCreateNameSpace(DINameSpace(Context));
-    ContextDIE->addChild(Die);
-  } else if (Context.isSubprogram()) {
-    DIE *ContextDIE = getOrCreateSubprogramDIE(DISubprogram(Context));
-    ContextDIE->addChild(Die);
-  } else if (DIE *ContextDIE = getDIE(Context))
+  if (DIE *ContextDIE = getOrCreateContextDIE(Context))
     ContextDIE->addChild(Die);
   else
     addDie(Die);
@@ -671,7 +737,7 @@ void CompileUnit::addToContextOwner(DIE *Die, DIDescriptor Context) {
 /// given DIType.
 DIE *CompileUnit::getOrCreateTypeDIE(const MDNode *TyNode) {
   DIType Ty(TyNode);
-  if (!Ty.Verify())
+  if (!Ty.isType())
     return NULL;
   DIE *TyDIE = getDIE(Ty);
   if (TyDIE)
@@ -709,9 +775,8 @@ DIE *CompileUnit::getOrCreateTypeDIE(const MDNode *TyNode) {
 }
 
 /// addType - Add a new type attribute to the specified entity.
-void CompileUnit::addType(DIE *Entity, DIType Ty, unsigned Attribute) {
-  if (!Ty.Verify())
-    return;
+void CompileUnit::addType(DIE *Entity, DIType Ty, uint16_t Attribute) {
+  assert(Ty && "Trying to add a type that doesn't exist?");
 
   // Check for pre-existence.
   DIEEntry *Entry = getDIEEntry(Ty);
@@ -748,14 +813,14 @@ void CompileUnit::addGlobalType(DIType Ty) {
 /// addPubTypes - Add type for pubtypes section.
 void CompileUnit::addPubTypes(DISubprogram SP) {
   DICompositeType SPTy = SP.getType();
-  unsigned SPTag = SPTy.getTag();
+  uint16_t SPTag = SPTy.getTag();
   if (SPTag != dwarf::DW_TAG_subroutine_type)
     return;
 
   DIArray Args = SPTy.getTypeArray();
   for (unsigned i = 0, e = Args.getNumElements(); i != e; ++i) {
     DIType ATy(Args.getElement(i));
-    if (!ATy.Verify())
+    if (!ATy.isType())
       continue;
     addGlobalType(ATy);
   }
@@ -771,7 +836,7 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DIBasicType BTy) {
 
   if (BTy.getTag() == dwarf::DW_TAG_unspecified_type) {
     Buffer.setTag(dwarf::DW_TAG_unspecified_type);
-    // Unspecified types has only name, nothing else.
+    // An unspecified type only has a name attribute.
     return;
   }
 
@@ -788,7 +853,7 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DIDerivedType DTy) {
   // Get core information.
   StringRef Name = DTy.getName();
   uint64_t Size = DTy.getSizeInBits() >> 3;
-  unsigned Tag = DTy.getTag();
+  uint16_t Tag = DTy.getTag();
 
   // FIXME - Workaround for templates.
   if (Tag == dwarf::DW_TAG_inheritance) Tag = dwarf::DW_TAG_reference_type;
@@ -797,7 +862,8 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DIDerivedType DTy) {
 
   // Map to main type, void will not have a type.
   DIType FromTy = DTy.getTypeDerivedFrom();
-  addType(&Buffer, FromTy);
+  if (FromTy)
+    addType(&Buffer, FromTy);
 
   // Add name if not anonymous or intermediate type.
   if (!Name.empty())
@@ -815,17 +881,49 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DIDerivedType DTy) {
     addSourceLine(&Buffer, DTy);
 }
 
+/// Return true if the type is appropriately scoped to be contained inside
+/// its own type unit.
+static bool isTypeUnitScoped(DIType Ty) {
+  DIScope Parent = Ty.getContext();
+  while (Parent) {
+    // Don't generate a hash for anything scoped inside a function.
+    if (Parent.isSubprogram())
+      return false;
+    Parent = Parent.getContext();
+  }
+  return true;
+}
+
+/// Return true if the type should be split out into a type unit.
+static bool shouldCreateTypeUnit(DICompositeType CTy) {
+  uint16_t Tag = CTy.getTag();
+
+  switch (Tag) {
+  case dwarf::DW_TAG_structure_type:
+  case dwarf::DW_TAG_union_type:
+  case dwarf::DW_TAG_enumeration_type:
+  case dwarf::DW_TAG_class_type:
+    // If this is a class, structure, union, or enumeration type
+    // that is not a declaration, is a type definition, and not scoped
+    // inside a function then separate this out as a type unit.
+    if (CTy.isForwardDecl() || !isTypeUnitScoped(CTy))
+      return 0;
+    return 1;
+  default:
+    return 0;
+  }
+}
+
 /// constructTypeDIE - Construct type DIE from DICompositeType.
 void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
   // Get core information.
   StringRef Name = CTy.getName();
 
   uint64_t Size = CTy.getSizeInBits() >> 3;
-  unsigned Tag = CTy.getTag();
+  uint16_t Tag = CTy.getTag();
   Buffer.setTag(Tag);
 
   switch (Tag) {
-  case dwarf::DW_TAG_vector_type:
   case dwarf::DW_TAG_array_type:
     constructArrayTypeDIE(Buffer, &CTy);
     break;
@@ -842,17 +940,18 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
       }
     }
     DIType DTy = CTy.getTypeDerivedFrom();
-    if (DTy.Verify()) {
+    if (DTy) {
       addType(&Buffer, DTy);
       addUInt(&Buffer, dwarf::DW_AT_enum_class, dwarf::DW_FORM_flag, 1);
     }
   }
     break;
   case dwarf::DW_TAG_subroutine_type: {
-    // Add return type.
+    // Add return type. A void return won't have a type.
     DIArray Elements = CTy.getTypeArray();
     DIDescriptor RTy = Elements.getElement(0);
-    addType(&Buffer, DIType(RTy));
+    if (RTy)
+      addType(&Buffer, DIType(RTy));
 
     bool isPrototyped = true;
     // Add arguments.
@@ -865,11 +964,14 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
       } else {
         DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
         addType(Arg, DIType(Ty));
+        if (DIType(Ty).isArtificial())
+          addFlag(Arg, dwarf::DW_AT_artificial);
         Buffer.addChild(Arg);
       }
     }
     // Add prototype flag if we're dealing with a C language and the
     // function has been prototyped.
+    uint16_t Language = DICompileUnit(Node).getLanguage();
     if (isPrototyped &&
         (Language == dwarf::DW_LANG_C89 ||
          Language == dwarf::DW_LANG_C99 ||
@@ -882,14 +984,7 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
   case dwarf::DW_TAG_class_type: {
     // Add elements to structure type.
     DIArray Elements = CTy.getTypeArray();
-
-    // A forward struct declared type may not have elements available.
-    unsigned N = Elements.getNumElements();
-    if (N == 0)
-      break;
-
-    // Add elements to structure type.
-    for (unsigned i = 0; i < N; ++i) {
+    for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
       DIDescriptor Element = Elements.getElement(i);
       DIE *ElemDie = NULL;
       if (Element.isSubprogram()) {
@@ -906,22 +1001,15 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
             dwarf::DW_ACCESS_public);
         if (SP.isExplicit())
           addFlag(ElemDie, dwarf::DW_AT_explicit);
-      }
-      else if (Element.isVariable()) {
-        DIVariable DV(Element);
-        ElemDie = new DIE(dwarf::DW_TAG_variable);
-        addString(ElemDie, dwarf::DW_AT_name, DV.getName());
-        addType(ElemDie, DV.getType());
-        addFlag(ElemDie, dwarf::DW_AT_declaration);
-        addFlag(ElemDie, dwarf::DW_AT_external);
-        addSourceLine(ElemDie, DV);
       } else if (Element.isDerivedType()) {
         DIDerivedType DDTy(Element);
         if (DDTy.getTag() == dwarf::DW_TAG_friend) {
           ElemDie = new DIE(dwarf::DW_TAG_friend);
           addType(ElemDie, DDTy.getTypeDerivedFrom(), dwarf::DW_AT_friend);
-        } else
-          ElemDie = createMemberDIE(DIDerivedType(Element));
+        } else if (DDTy.isStaticMember())
+          ElemDie = createStaticMemberDIE(DDTy);
+        else
+          ElemDie = createMemberDIE(DDTy);
       } else if (Element.isObjCProperty()) {
         DIObjCProperty Property(Element);
         ElemDie = new DIE(Property.getTag());
@@ -969,10 +1057,8 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
     if (DIDescriptor(ContainingType).isCompositeType())
       addDIEEntry(&Buffer, dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4,
                   getOrCreateTypeDIE(DIType(ContainingType)));
-    else {
-      DIDescriptor Context = CTy.getContext();
-      addToContextOwner(&Buffer, Context);
-    }
+    else
+      addToContextOwner(&Buffer, CTy.getContext());
 
     if (CTy.isObjcClassComplete())
       addFlag(&Buffer, dwarf::DW_AT_APPLE_objc_complete_type);
@@ -1020,6 +1106,10 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
       addUInt(&Buffer, dwarf::DW_AT_APPLE_runtime_class,
               dwarf::DW_FORM_data1, RLang);
   }
+  // If this is a type applicable to a type unit it then add it to the
+  // list of types we'll compute a hash for later.
+  if (shouldCreateTypeUnit(CTy))
+    DD->addTypeUnitType(&Buffer);
 }
 
 /// getOrCreateTemplateTypeParameterDIE - Find existing DIE or create new DIE
@@ -1031,25 +1121,53 @@ CompileUnit::getOrCreateTemplateTypeParameterDIE(DITemplateTypeParameter TP) {
     return ParamDIE;
 
   ParamDIE = new DIE(dwarf::DW_TAG_template_type_parameter);
-  addType(ParamDIE, TP.getType());
-  addString(ParamDIE, dwarf::DW_AT_name, TP.getName());
+  // Add the type if it exists, it could be void and therefore no type.
+  if (TP.getType())
+    addType(ParamDIE, TP.getType());
+  if (!TP.getName().empty())
+    addString(ParamDIE, dwarf::DW_AT_name, TP.getName());
   return ParamDIE;
 }
 
 /// getOrCreateTemplateValueParameterDIE - Find existing DIE or create new DIE
 /// for the given DITemplateValueParameter.
 DIE *
-CompileUnit::getOrCreateTemplateValueParameterDIE(DITemplateValueParameter TPV){
-  DIE *ParamDIE = getDIE(TPV);
+CompileUnit::getOrCreateTemplateValueParameterDIE(DITemplateValueParameter VP) {
+  DIE *ParamDIE = getDIE(VP);
   if (ParamDIE)
     return ParamDIE;
 
-  ParamDIE = new DIE(dwarf::DW_TAG_template_value_parameter);
-  addType(ParamDIE, TPV.getType());
-  if (!TPV.getName().empty())
-    addString(ParamDIE, dwarf::DW_AT_name, TPV.getName());
-  addUInt(ParamDIE, dwarf::DW_AT_const_value, dwarf::DW_FORM_udata,
-          TPV.getValue());
+  ParamDIE = new DIE(VP.getTag());
+
+  // Add the type if there is one, template template and template parameter
+  // packs will not have a type.
+  if (VP.getType())
+    addType(ParamDIE, VP.getType());
+  if (!VP.getName().empty())
+    addString(ParamDIE, dwarf::DW_AT_name, VP.getName());
+  if (Value *Val = VP.getValue()) {
+    if (ConstantInt *CI = dyn_cast<ConstantInt>(Val))
+      addConstantValue(ParamDIE, CI, VP.getType().isUnsignedDIType());
+    else if (GlobalValue *GV = dyn_cast<GlobalValue>(Val)) {
+      // For declaration non-type template parameters (such as global values and
+      // functions)
+      DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
+      addOpAddress(Block, Asm->Mang->getSymbol(GV));
+      // Emit DW_OP_stack_value to use the address as the immediate value of the
+      // parameter, rather than a pointer to it.
+      addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_stack_value);
+      addBlock(ParamDIE, dwarf::DW_AT_location, 0, Block);
+    } else if (VP.getTag() == dwarf::DW_TAG_GNU_template_template_param) {
+      assert(isa<MDString>(Val));
+      addString(ParamDIE, dwarf::DW_AT_GNU_template_name,
+                cast<MDString>(Val)->getString());
+    } else if (VP.getTag() == dwarf::DW_TAG_GNU_template_parameter_pack) {
+      assert(isa<MDNode>(Val));
+      DIArray A(cast<MDNode>(Val));
+      addTemplateParams(*ParamDIE, A);
+    }
+  }
+
   return ParamDIE;
 }
 
@@ -1070,16 +1188,6 @@ DIE *CompileUnit::getOrCreateNameSpace(DINameSpace NS) {
   return NDie;
 }
 
-/// getRealLinkageName - If special LLVM prefix that is used to inform the asm
-/// printer to not emit usual symbol prefix before the symbol name is used then
-/// return linkage name after skipping this special LLVM prefix.
-static StringRef getRealLinkageName(StringRef LinkageName) {
-  char One = '\1';
-  if (LinkageName.startswith(StringRef(&One, 1)))
-    return LinkageName.substr(1);
-  return LinkageName;
-}
-
 /// getOrCreateSubprogramDIE - Create new DIE using SP.
 DIE *CompileUnit::getOrCreateSubprogramDIE(DISubprogram SP) {
   DIE *SPDie = getDIE(SP);
@@ -1112,7 +1220,7 @@ DIE *CompileUnit::getOrCreateSubprogramDIE(DISubprogram SP) {
   StringRef LinkageName = SP.getLinkageName();
   if (!LinkageName.empty() && DD->useDarwinGDBCompat())
     addString(SPDie, dwarf::DW_AT_MIPS_linkage_name,
-              getRealLinkageName(LinkageName));
+              GlobalValue::getRealLinkageName(LinkageName));
 
   // If this DIE is going to refer declaration info using AT_specification
   // then there is no need to add other attributes.
@@ -1127,7 +1235,7 @@ DIE *CompileUnit::getOrCreateSubprogramDIE(DISubprogram SP) {
   // Add the linkage name if we have one.
   if (!LinkageName.empty() && !DD->useDarwinGDBCompat())
     addString(SPDie, dwarf::DW_AT_MIPS_linkage_name,
-              getRealLinkageName(LinkageName));
+              GlobalValue::getRealLinkageName(LinkageName));
 
   // Constructors and operators for anonymous aggregates do not have names.
   if (!SP.getName().empty())
@@ -1137,20 +1245,20 @@ DIE *CompileUnit::getOrCreateSubprogramDIE(DISubprogram SP) {
 
   // Add the prototype if we have a prototype and we have a C like
   // language.
+  uint16_t Language = DICompileUnit(Node).getLanguage();
   if (SP.isPrototyped() &&
       (Language == dwarf::DW_LANG_C89 ||
        Language == dwarf::DW_LANG_C99 ||
        Language == dwarf::DW_LANG_ObjC))
     addFlag(SPDie, dwarf::DW_AT_prototyped);
 
-  // Add Return Type.
+  // Add Return Type. A void return type will not have a type.
   DICompositeType SPTy = SP.getType();
-  DIArray Args = SPTy.getTypeArray();
-  unsigned SPTag = SPTy.getTag();
+  assert(SPTy.getTag() == dwarf::DW_TAG_subroutine_type &&
+         "the type of a subprogram should be a subroutine");
 
-  if (Args.getNumElements() == 0 || SPTag != dwarf::DW_TAG_subroutine_type)
-    addType(SPDie, SPTy);
-  else
+  DIArray Args = SPTy.getTypeArray();
+  if (Args.getElement(0))
     addType(SPDie, DIType(Args.getElement(0)));
 
   unsigned VK = SP.getVirtuality();
@@ -1169,19 +1277,14 @@ DIE *CompileUnit::getOrCreateSubprogramDIE(DISubprogram SP) {
 
     // Add arguments. Do not add arguments for subprogram definition. They will
     // be handled while processing variables.
-    DICompositeType SPTy = SP.getType();
-    DIArray Args = SPTy.getTypeArray();
-    unsigned SPTag = SPTy.getTag();
-
-    if (SPTag == dwarf::DW_TAG_subroutine_type)
-      for (unsigned i = 1, N =  Args.getNumElements(); i < N; ++i) {
-        DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
-        DIType ATy = DIType(Args.getElement(i));
-        addType(Arg, ATy);
-        if (ATy.isArtificial())
-          addFlag(Arg, dwarf::DW_AT_artificial);
-        SPDie->addChild(Arg);
-      }
+    for (unsigned i = 1, N =  Args.getNumElements(); i < N; ++i) {
+      DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
+      DIType ATy = DIType(Args.getElement(i));
+      addType(Arg, ATy);
+      if (ATy.isArtificial())
+        addFlag(Arg, dwarf::DW_AT_artificial);
+      SPDie->addChild(Arg);
+    }
   }
 
   if (SP.isArtificial())
@@ -1234,42 +1337,81 @@ void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
     return;
 
   DIGlobalVariable GV(N);
-  if (!GV.Verify())
+  if (!GV.isGlobalVariable())
     return;
 
-  DIE *VariableDIE = new DIE(GV.getTag());
-  // Add to map.
-  insertDIE(N, VariableDIE);
-
-  // Add name.
-  addString(VariableDIE, dwarf::DW_AT_name, GV.getDisplayName());
-  StringRef LinkageName = GV.getLinkageName();
-  bool isGlobalVariable = GV.getGlobal() != NULL;
-  if (!LinkageName.empty() && isGlobalVariable)
-    addString(VariableDIE, dwarf::DW_AT_MIPS_linkage_name,
-              getRealLinkageName(LinkageName));
-  // Add type.
+  DIDescriptor GVContext = GV.getContext();
   DIType GTy = GV.getType();
-  addType(VariableDIE, GTy);
 
-  // Add scoping info.
-  if (!GV.isLocalToUnit())
-    addFlag(VariableDIE, dwarf::DW_AT_external);
+  // If this is a static data member definition, some attributes belong
+  // to the declaration DIE.
+  DIE *VariableDIE = NULL;
+  bool IsStaticMember = false;
+  DIDerivedType SDMDecl = GV.getStaticDataMemberDeclaration();
+  if (SDMDecl.Verify()) {
+    assert(SDMDecl.isStaticMember() && "Expected static member decl");
+    // We need the declaration DIE that is in the static member's class.
+    // But that class might not exist in the DWARF yet.
+    // Creating the class will create the static member decl DIE.
+    getOrCreateContextDIE(SDMDecl.getContext());
+    VariableDIE = getDIE(SDMDecl);
+    assert(VariableDIE && "Static member decl has no context?");
+    IsStaticMember = true;
+  }
+
+  // If this is not a static data member definition, create the variable
+  // DIE and add the initial set of attributes to it.
+  if (!VariableDIE) {
+    VariableDIE = new DIE(GV.getTag());
+    // Add to map.
+    insertDIE(N, VariableDIE);
+
+    // Add name and type.
+    addString(VariableDIE, dwarf::DW_AT_name, GV.getDisplayName());
+    addType(VariableDIE, GTy);
+
+    // Add scoping info.
+    if (!GV.isLocalToUnit()) {
+      addFlag(VariableDIE, dwarf::DW_AT_external);
+      addGlobalName(GV.getName(), VariableDIE);
+    }
+
+    // Add line number info.
+    addSourceLine(VariableDIE, GV);
+    // Add to context owner.
+    addToContextOwner(VariableDIE, GVContext);
+  }
 
-  // Add line number info.
-  addSourceLine(VariableDIE, GV);
-  // Add to context owner.
-  DIDescriptor GVContext = GV.getContext();
-  addToContextOwner(VariableDIE, GVContext);
   // Add location.
   bool addToAccelTable = false;
   DIE *VariableSpecDIE = NULL;
+  bool isGlobalVariable = GV.getGlobal() != NULL;
   if (isGlobalVariable) {
     addToAccelTable = true;
     DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
-    addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
-    addLabel(Block, 0, dwarf::DW_FORM_udata,
-             Asm->Mang->getSymbol(GV.getGlobal()));
+    const MCSymbol *Sym = Asm->Mang->getSymbol(GV.getGlobal());
+    if (GV.getGlobal()->isThreadLocal()) {
+      // FIXME: Make this work with -gsplit-dwarf.
+      unsigned PointerSize = Asm->getDataLayout().getPointerSize();
+      assert((PointerSize == 4 || PointerSize == 8) &&
+             "Add support for other sizes if necessary");
+      const MCExpr *Expr =
+          Asm->getObjFileLowering().getDebugThreadLocalSymbol(Sym);
+      // Based on GCC's support for TLS:
+      if (!DD->useSplitDwarf()) {
+        // 1) Start with a constNu of the appropriate pointer size
+        addUInt(Block, 0, dwarf::DW_FORM_data1,
+                PointerSize == 4 ? dwarf::DW_OP_const4u : dwarf::DW_OP_const8u);
+        // 2) containing the (relocated) address of the TLS variable
+        addExpr(Block, 0, dwarf::DW_FORM_udata, Expr);
+      } else {
+        addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_const_index);
+        addUInt(Block, 0, dwarf::DW_FORM_udata, DU->getAddrPoolIndex(Expr));
+      }
+      // 3) followed by a custom OP to tell the debugger about TLS (presumably)
+      addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_lo_user);
+    } else
+      addOpAddress(Block, Sym);
     // Do not create specification DIE if context is either compile unit
     // or a subprogram.
     if (GVContext && GV.isDefinition() && !GVContext.isCompileUnit() &&
@@ -1279,22 +1421,41 @@ void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
       addDIEEntry(VariableSpecDIE, dwarf::DW_AT_specification,
                   dwarf::DW_FORM_ref4, VariableDIE);
       addBlock(VariableSpecDIE, dwarf::DW_AT_location, 0, Block);
-      addFlag(VariableDIE, dwarf::DW_AT_declaration);
+      // A static member's declaration is already flagged as such.
+      if (!SDMDecl.Verify())
+        addFlag(VariableDIE, dwarf::DW_AT_declaration);
       addDie(VariableSpecDIE);
     } else {
       addBlock(VariableDIE, dwarf::DW_AT_location, 0, Block);
     }
+    // Add linkage name.
+    StringRef LinkageName = GV.getLinkageName();
+    if (!LinkageName.empty()) {
+      // From DWARF4: DIEs to which DW_AT_linkage_name may apply include:
+      // TAG_common_block, TAG_constant, TAG_entry_point, TAG_subprogram and
+      // TAG_variable.
+      addString(IsStaticMember && VariableSpecDIE ?
+                VariableSpecDIE : VariableDIE, dwarf::DW_AT_MIPS_linkage_name,
+                GlobalValue::getRealLinkageName(LinkageName));
+      // In compatibility mode with older gdbs we put the linkage name on both
+      // the TAG_variable DIE and on the TAG_member DIE.
+      if (IsStaticMember && VariableSpecDIE && DD->useDarwinGDBCompat())
+        addString(VariableDIE, dwarf::DW_AT_MIPS_linkage_name,
+                  GlobalValue::getRealLinkageName(LinkageName));
+    }
   } else if (const ConstantInt *CI =
-             dyn_cast_or_null<ConstantInt>(GV.getConstant()))
-    addConstantValue(VariableDIE, CI, GTy.isUnsignedDIType());
-  else if (const ConstantExpr *CE = getMergedGlobalExpr(N->getOperand(11))) {
+             dyn_cast_or_null<ConstantInt>(GV.getConstant())) {
+    // AT_const_value was added when the static member was created. To avoid
+    // emitting AT_const_value multiple times, we only add AT_const_value when
+    // it is not a static member.
+    if (!IsStaticMember)
+      addConstantValue(VariableDIE, CI, GTy.isUnsignedDIType());
+  } else if (const ConstantExpr *CE = getMergedGlobalExpr(N->getOperand(11))) {
     addToAccelTable = true;
     // GV is a merged global.
     DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
     Value *Ptr = CE->getOperand(0);
-    addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
-    addLabel(Block, 0, dwarf::DW_FORM_udata,
-                    Asm->Mang->getSymbol(cast<GlobalValue>(Ptr)));
+    addOpAddress(Block, Asm->Mang->getSymbol(cast<GlobalValue>(Ptr)));
     addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_constu);
     SmallVector<Value*, 3> Idx(CE->op_begin()+1, CE->op_end());
     addUInt(Block, 0, dwarf::DW_FORM_udata,
@@ -1312,8 +1473,6 @@ void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
     if (GV.getLinkageName() != "" && GV.getName() != GV.getLinkageName())
       addAccelName(GV.getLinkageName(), AddrDIE);
   }
-
-  return;
 }
 
 /// constructSubrangeDIE - Construct subrange DIE from DISubrange.
@@ -1347,12 +1506,11 @@ void CompileUnit::constructSubrangeDIE(DIE &Buffer, DISubrange SR,
 void CompileUnit::constructArrayTypeDIE(DIE &Buffer,
                                         DICompositeType *CTy) {
   Buffer.setTag(dwarf::DW_TAG_array_type);
-  if (CTy->getTag() == dwarf::DW_TAG_vector_type)
+  if (CTy->isVector())
     addFlag(&Buffer, dwarf::DW_AT_GNU_vector);
 
-  // Emit derived type.
+  // Emit the element type.
   addType(&Buffer, CTy->getTypeDerivedFrom());
-  DIArray Elements = CTy->getTypeArray();
 
   // Get an anonymous type for index type.
   // FIXME: This type should be passed down from the front end
@@ -1370,6 +1528,7 @@ void CompileUnit::constructArrayTypeDIE(DIE &Buffer,
   }
 
   // Add subranges to array type.
+  DIArray Elements = CTy->getTypeArray();
   for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
     DIDescriptor Element = Elements.getElement(i);
     if (Element.getTag() == dwarf::DW_TAG_subrange_type)
@@ -1402,11 +1561,12 @@ void CompileUnit::constructContainingTypeDIEs() {
 }
 
 /// constructVariableDIE - Construct a DIE for the given DbgVariable.
-DIE *CompileUnit::constructVariableDIE(DbgVariable *DV, bool isScopeAbstract) {
+DIE *CompileUnit::constructVariableDIE(DbgVariable *DV,
+                                       bool isScopeAbstract) {
   StringRef Name = DV->getName();
 
   // Translate tag to proper Dwarf tag.
-  unsigned Tag = DV->getTag();
+  uint16_t Tag = DV->getTag();
 
   // Define variable debug information entry.
   DIE *VariableDie = new DIE(Tag);
@@ -1416,7 +1576,8 @@ DIE *CompileUnit::constructVariableDIE(DbgVariable *DV, bool isScopeAbstract) {
     addDIEEntry(VariableDie, dwarf::DW_AT_abstract_origin,
                             dwarf::DW_FORM_ref4, AbsDIE);
   else {
-    addString(VariableDie, dwarf::DW_AT_name, Name);
+    if (!Name.empty())
+      addString(VariableDie, dwarf::DW_AT_name, Name);
     addSourceLine(VariableDie, DV->getVariable());
     addType(VariableDie, DV->getType());
   }
@@ -1433,59 +1594,31 @@ DIE *CompileUnit::constructVariableDIE(DbgVariable *DV, bool isScopeAbstract) {
 
   unsigned Offset = DV->getDotDebugLocOffset();
   if (Offset != ~0U) {
-    addLabel(VariableDie, dwarf::DW_AT_location,
-                         dwarf::DW_FORM_data4,
-                         Asm->GetTempSymbol("debug_loc", Offset));
+    addLabel(VariableDie, dwarf::DW_AT_location, dwarf::DW_FORM_data4,
+             Asm->GetTempSymbol("debug_loc", Offset));
     DV->setDIE(VariableDie);
     return VariableDie;
   }
 
   // Check if variable is described by a DBG_VALUE instruction.
   if (const MachineInstr *DVInsn = DV->getMInsn()) {
-    bool updated = false;
-    if (DVInsn->getNumOperands() == 3) {
-      if (DVInsn->getOperand(0).isReg()) {
-        const MachineOperand RegOp = DVInsn->getOperand(0);
-        const TargetRegisterInfo *TRI = Asm->TM.getRegisterInfo();
-        if (DVInsn->getOperand(1).isImm() &&
-            TRI->getFrameRegister(*Asm->MF) == RegOp.getReg()) {
-          unsigned FrameReg = 0;
-          const TargetFrameLowering *TFI = Asm->TM.getFrameLowering();
-          int Offset =
-            TFI->getFrameIndexReference(*Asm->MF,
-                                        DVInsn->getOperand(1).getImm(),
-                                        FrameReg);
-          MachineLocation Location(FrameReg, Offset);
-          addVariableAddress(DV, VariableDie, Location);
-
-        } else if (RegOp.getReg())
-          addVariableAddress(DV, VariableDie,
-                                         MachineLocation(RegOp.getReg()));
-        updated = true;
-      }
-      else if (DVInsn->getOperand(0).isImm())
-        updated =
-          addConstantValue(VariableDie, DVInsn->getOperand(0),
-                                       DV->getType());
-      else if (DVInsn->getOperand(0).isFPImm())
-        updated =
-          addConstantFPValue(VariableDie, DVInsn->getOperand(0));
-      else if (DVInsn->getOperand(0).isCImm())
-        updated =
-          addConstantValue(VariableDie,
-                                       DVInsn->getOperand(0).getCImm(),
-                                       DV->getType().isUnsignedDIType());
-    } else {
-      addVariableAddress(DV, VariableDie,
-                                     Asm->getDebugValueLocation(DVInsn));
-      updated = true;
-    }
-    if (!updated) {
-      // If variableDie is not updated then DBG_VALUE instruction does not
-      // have valid variable info.
-      delete VariableDie;
-      return NULL;
-    }
+    assert(DVInsn->getNumOperands() == 3);
+    if (DVInsn->getOperand(0).isReg()) {
+      const MachineOperand RegOp = DVInsn->getOperand(0);
+      // If the second operand is an immediate, this is an indirect value.
+      if (DVInsn->getOperand(1).isImm()) {
+        MachineLocation Location(RegOp.getReg(), DVInsn->getOperand(1).getImm());
+        addVariableAddress(*DV, VariableDie, Location);
+      } else if (RegOp.getReg())
+        addVariableAddress(*DV, VariableDie, MachineLocation(RegOp.getReg()));
+    } else if (DVInsn->getOperand(0).isImm())
+      addConstantValue(VariableDie, DVInsn->getOperand(0), DV->getType());
+    else if (DVInsn->getOperand(0).isFPImm())
+      addConstantFPValue(VariableDie, DVInsn->getOperand(0));
+    else if (DVInsn->getOperand(0).isCImm())
+      addConstantValue(VariableDie, DVInsn->getOperand(0).getCImm(),
+                       DV->getType().isUnsignedDIType());
+
     DV->setDIE(VariableDie);
     return VariableDie;
   } else {
@@ -1497,7 +1630,7 @@ DIE *CompileUnit::constructVariableDIE(DbgVariable *DV, bool isScopeAbstract) {
       int Offset =
         TFI->getFrameIndexReference(*Asm->MF, FI, FrameReg);
       MachineLocation Location(FrameReg, Offset);
-      addVariableAddress(DV, VariableDie, Location);
+      addVariableAddress(*DV, VariableDie, Location);
     }
   }
 
@@ -1590,32 +1723,40 @@ DIE *CompileUnit::createMemberDIE(DIDerivedType DT) {
   if (DT.isArtificial())
     addFlag(MemberDie, dwarf::DW_AT_artificial);
 
-  // This is only for backward compatibility.
-  StringRef PropertyName = DT.getObjCPropertyName();
-  if (!PropertyName.empty()) {
-    addString(MemberDie, dwarf::DW_AT_APPLE_property_name, PropertyName);
-    StringRef GetterName = DT.getObjCPropertyGetterName();
-    if (!GetterName.empty())
-      addString(MemberDie, dwarf::DW_AT_APPLE_property_getter, GetterName);
-    StringRef SetterName = DT.getObjCPropertySetterName();
-    if (!SetterName.empty())
-      addString(MemberDie, dwarf::DW_AT_APPLE_property_setter, SetterName);
-    unsigned PropertyAttributes = 0;
-    if (DT.isReadOnlyObjCProperty())
-      PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_readonly;
-    if (DT.isReadWriteObjCProperty())
-      PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_readwrite;
-    if (DT.isAssignObjCProperty())
-      PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_assign;
-    if (DT.isRetainObjCProperty())
-      PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_retain;
-    if (DT.isCopyObjCProperty())
-      PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_copy;
-    if (DT.isNonAtomicObjCProperty())
-      PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_nonatomic;
-    if (PropertyAttributes)
-      addUInt(MemberDie, dwarf::DW_AT_APPLE_property_attribute, 0,
-              PropertyAttributes);
-  }
   return MemberDie;
 }
+
+/// createStaticMemberDIE - Create new DIE for C++ static member.
+DIE *CompileUnit::createStaticMemberDIE(const DIDerivedType DT) {
+  if (!DT.Verify())
+    return NULL;
+
+  DIE *StaticMemberDIE = new DIE(DT.getTag());
+  DIType Ty = DT.getTypeDerivedFrom();
+
+  addString(StaticMemberDIE, dwarf::DW_AT_name, DT.getName());
+  addType(StaticMemberDIE, Ty);
+  addSourceLine(StaticMemberDIE, DT);
+  addFlag(StaticMemberDIE, dwarf::DW_AT_external);
+  addFlag(StaticMemberDIE, dwarf::DW_AT_declaration);
+
+  // FIXME: We could omit private if the parent is a class_type, and
+  // public if the parent is something else.
+  if (DT.isProtected())
+    addUInt(StaticMemberDIE, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
+            dwarf::DW_ACCESS_protected);
+  else if (DT.isPrivate())
+    addUInt(StaticMemberDIE, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
+            dwarf::DW_ACCESS_private);
+  else
+    addUInt(StaticMemberDIE, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
+            dwarf::DW_ACCESS_public);
+
+  if (const ConstantInt *CI = dyn_cast_or_null<ConstantInt>(DT.getConstant()))
+    addConstantValue(StaticMemberDIE, CI, Ty.isUnsignedDIType());
+  if (const ConstantFP *CFP = dyn_cast_or_null<ConstantFP>(DT.getConstant()))
+    addConstantFPValue(StaticMemberDIE, CFP);
+
+  insertDIE(DT, StaticMemberDIE);
+  return StaticMemberDIE;
+}