Add in the first iteration of support for llvm/clang/lldb to allow variable per address space pointer sizes to be optimized correctly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165726 91177308-0d34-0410-b5e6-96231b3b80d8

40 files changed, 188 insertions, 109 deletions

diff --git a/include/llvm-c/Target.h b/include/llvm-c/Target.h
index 92228701e3..57abfa0207 100644
--- a/include/llvm-c/Target.h
+++ b/include/llvm-c/Target.h
@@ -172,10 +172,20 @@ enum LLVMByteOrdering LLVMByteOrder(LLVMTargetDataRef);
     See the method llvm::DataLayout::getPointerSize. */
 unsigned LLVMPointerSize(LLVMTargetDataRef);
 
+/** Returns the pointer size in bytes for a target for a specified
+    address space.
+    See the method llvm::DataLayout::getPointerSize. */
+unsigned LLVMPointerSizeForAS(LLVMTargetDataRef, unsigned AS);
+
 /** Returns the integer type that is the same size as a pointer on a target.
     See the method llvm::DataLayout::getIntPtrType. */
 LLVMTypeRef LLVMIntPtrType(LLVMTargetDataRef);
 
+/** Returns the integer type that is the same size as a pointer on a target.
+    This version allows the address space to be specified.
+    See the method llvm::DataLayout::getIntPtrType. */
+LLVMTypeRef LLVMIntPtrTypeForAS(LLVMTargetDataRef, unsigned AS);
+
 /** Computes the size of a type in bytes for a target.
     See the method llvm::DataLayout::getTypeSizeInBits. */
 unsigned long long LLVMSizeOfTypeInBits(LLVMTargetDataRef, LLVMTypeRef);
diff --git a/include/llvm/DataLayout.h b/include/llvm/DataLayout.h
index a24737e842..c9ac0b7fea 100644
--- a/include/llvm/DataLayout.h
+++ b/include/llvm/DataLayout.h
@@ -231,9 +231,7 @@ public:
   }
 
   /// Layout pointer alignment
-  /// FIXME: The defaults need to be removed once all of
-  /// the backends/clients are updated.
-  unsigned getPointerABIAlignment(unsigned AS = 0)  const {
+  unsigned getPointerABIAlignment(unsigned AS)  const {
     DenseMap<unsigned, PointerAlignElem>::const_iterator val = Pointers.find(AS);
     if (val == Pointers.end()) {
       val = Pointers.find(0);
@@ -241,9 +239,7 @@ public:
     return val->second.ABIAlign;
   }
   /// Return target's alignment for stack-based pointers
-  /// FIXME: The defaults need to be removed once all of
-  /// the backends/clients are updated.
-  unsigned getPointerPrefAlignment(unsigned AS = 0) const {
+  unsigned getPointerPrefAlignment(unsigned AS) const {
     DenseMap<unsigned, PointerAlignElem>::const_iterator val = Pointers.find(AS);
     if (val == Pointers.end()) {
       val = Pointers.find(0);
@@ -251,9 +247,7 @@ public:
     return val->second.PrefAlign;
   }
   /// Layout pointer size
-  /// FIXME: The defaults need to be removed once all of
-  /// the backends/clients are updated.
-  unsigned getPointerSize(unsigned AS = 0)          const {
+  unsigned getPointerSize(unsigned AS)          const {
     DenseMap<unsigned, PointerAlignElem>::const_iterator val = Pointers.find(AS);
     if (val == Pointers.end()) {
       val = Pointers.find(0);
@@ -261,9 +255,7 @@ public:
     return val->second.TypeBitWidth;
   }
   /// Layout pointer size, in bits
-  /// FIXME: The defaults need to be removed once all of
-  /// the backends/clients are updated.
-  unsigned getPointerSizeInBits(unsigned AS = 0)    const {
+  unsigned getPointerSizeInBits(unsigned AS)    const {
     DenseMap<unsigned, PointerAlignElem>::const_iterator val = Pointers.find(AS);
     if (val == Pointers.end()) {
       val = Pointers.find(0);
diff --git a/include/llvm/Instructions.h b/include/llvm/Instructions.h
index 6837608b2c..9c526bd97b 100644
--- a/include/llvm/Instructions.h
+++ b/include/llvm/Instructions.h
@@ -350,7 +350,16 @@ public:
   static unsigned getPointerOperandIndex() { return 1U; }
 
   unsigned getPointerAddressSpace() const {
-    return cast<PointerType>(getPointerOperand()->getType())->getAddressSpace();
+    if (getPointerOperand()->getType()->isPointerTy())
+      return cast<PointerType>(getPointerOperand()->getType())
+        ->getAddressSpace();
+    if (getPointerOperand()->getType()->isVectorTy()
+        && cast<VectorType>(getPointerOperand()->getType())->isPointerTy())
+      return cast<PointerType>(cast<VectorType>(
+            getPointerOperand()->getType())->getElementType())
+        ->getAddressSpace();
+    llvm_unreachable("Only a vector of pointers or pointers can be used!");
+    return 0;
   }
 
   // Methods for support type inquiry through isa, cast, and dyn_cast:
@@ -3653,7 +3662,15 @@ public:
 
   /// @brief return the address space of the pointer.
   unsigned getAddressSpace() const {
-    return cast<PointerType>(getType())->getAddressSpace();
+    if (getType()->isPointerTy()) 
+      return cast<PointerType>(getType())->getAddressSpace();
+    if (getType()->isVectorTy() &&
+        cast<VectorType>(getType())->getElementType()->isPointerTy())
+      return cast<PointerType>(
+          cast<VectorType>(getType())->getElementType())
+        ->getAddressSpace();
+    llvm_unreachable("Must be a pointer or a vector of pointers.");
+    return 0;
   }
 
   // Methods for support type inquiry through isa, cast, and dyn_cast:
@@ -3695,7 +3712,16 @@ public:
 
   /// @brief return the address space of the pointer.
   unsigned getPointerAddressSpace() const {
-    return cast<PointerType>(getOperand(0)->getType())->getAddressSpace();
+    Type *Ty = getOperand(0)->getType();
+    if (Ty->isPointerTy())
+      return cast<PointerType>(Ty)->getAddressSpace();
+    if (Ty->isVectorTy()
+        && cast<VectorType>(Ty)->getElementType()->isPointerTy())
+      return cast<PointerType>(
+          cast<VectorType>(Ty)->getElementType())
+        ->getAddressSpace();
+    llvm_unreachable("Must be a pointer or a vector of pointers.");
+    return 0;
   }
 
   // Methods for support type inquiry through isa, cast, and dyn_cast:
diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h
index b3149e960a..183ccbd48e 100644
--- a/include/llvm/Target/TargetLowering.h
+++ b/include/llvm/Target/TargetLowering.h
@@ -146,7 +146,7 @@ public:
   // Return the pointer type for the given address space, defaults to
   // the pointer type from the data layout.
   // FIXME: The default needs to be removed once all the code is updated.
-  virtual MVT getPointerTy(uint32_t addrspace = 0) const { return PointerTy; }
+  virtual MVT getPointerTy(uint32_t AS = 0) const { return PointerTy; }
   virtual MVT getShiftAmountTy(EVT LHSTy) const;
 
   /// isSelectExpensive - Return true if the select operation is expensive for
diff --git a/include/llvm/Transforms/Utils/Local.h b/include/llvm/Transforms/Utils/Local.h
index 21dd3fbe11..fd1b5556ef 100644
--- a/include/llvm/Transforms/Utils/Local.h
+++ b/include/llvm/Transforms/Utils/Local.h
@@ -186,7 +186,8 @@ Value *EmitGEPOffset(IRBuilderTy *Builder, const DataLayout &TD, User *GEP,
   bool isInBounds = cast<GEPOperator>(GEP)->isInBounds() && !NoAssumptions;
 
   // Build a mask for high order bits.
-  unsigned IntPtrWidth = TD.getPointerSizeInBits();
+  unsigned AS = cast<GEPOperator>(GEP)->getPointerAddressSpace();
+  unsigned IntPtrWidth = TD.getPointerSizeInBits(AS);
   uint64_t PtrSizeMask = ~0ULL >> (64-IntPtrWidth);
 
   for (User::op_iterator i = GEP->op_begin() + 1, e = GEP->op_end(); i != e;
diff --git a/lib/Analysis/BasicAliasAnalysis.cpp b/lib/Analysis/BasicAliasAnalysis.cpp
index 263bfc031f..36903f94e2 100644
--- a/lib/Analysis/BasicAliasAnalysis.cpp
+++ b/lib/Analysis/BasicAliasAnalysis.cpp
@@ -286,7 +286,8 @@ DecomposeGEPExpression(const Value *V, int64_t &BaseOffs,
       V = GEPOp->getOperand(0);
       continue;
     }
-    
+
+    unsigned AS = GEPOp->getPointerAddressSpace();
     // Walk the indices of the GEP, accumulating them into BaseOff/VarIndices.
     gep_type_iterator GTI = gep_type_begin(GEPOp);
     for (User::const_op_iterator I = GEPOp->op_begin()+1,
@@ -315,7 +316,7 @@ DecomposeGEPExpression(const Value *V, int64_t &BaseOffs,
       // If the integer type is smaller than the pointer size, it is implicitly
       // sign extended to pointer size.
       unsigned Width = cast<IntegerType>(Index->getType())->getBitWidth();
-      if (TD->getPointerSizeInBits() > Width)
+      if (TD->getPointerSizeInBits(AS) > Width)
         Extension = EK_SignExt;
       
       // Use GetLinearExpression to decompose the index into a C1*V+C2 form.
@@ -344,7 +345,7 @@ DecomposeGEPExpression(const Value *V, int64_t &BaseOffs,
       
       // Make sure that we have a scale that makes sense for this target's
       // pointer size.
-      if (unsigned ShiftBits = 64-TD->getPointerSizeInBits()) {
+      if (unsigned ShiftBits = 64-TD->getPointerSizeInBits(AS)) {
         Scale <<= ShiftBits;
         Scale = (int64_t)Scale >> ShiftBits;
       }
diff --git a/lib/Analysis/CodeMetrics.cpp b/lib/Analysis/CodeMetrics.cpp
index 651a54be1b..d669268496 100644
--- a/lib/Analysis/CodeMetrics.cpp
+++ b/lib/Analysis/CodeMetrics.cpp
@@ -91,14 +91,16 @@ bool llvm::isInstructionFree(const Instruction *I, const DataLayout *TD) {
     // which doesn't contain values outside the range of a pointer.
     if (isa<IntToPtrInst>(CI) && TD &&
         TD->isLegalInteger(Op->getType()->getScalarSizeInBits()) &&
-        Op->getType()->getScalarSizeInBits() <= TD->getPointerSizeInBits())
+        Op->getType()->getScalarSizeInBits() <= TD->getPointerSizeInBits(
+          cast<IntToPtrInst>(CI)->getAddressSpace()))
       return true;
 
     // A ptrtoint cast is free so long as the result is large enough to store
     // the pointer, and a legal integer type.
     if (isa<PtrToIntInst>(CI) && TD &&
         TD->isLegalInteger(Op->getType()->getScalarSizeInBits()) &&
-        Op->getType()->getScalarSizeInBits() >= TD->getPointerSizeInBits())
+        Op->getType()->getScalarSizeInBits() >= TD->getPointerSizeInBits(
+          cast<PtrToIntInst>(CI)->getPointerAddressSpace()))
       return true;
 
     // trunc to a native type is free (assuming the target has compare and
diff --git a/lib/Analysis/ConstantFolding.cpp b/lib/Analysis/ConstantFolding.cpp
index b7bf044a36..146897ad67 100644
--- a/lib/Analysis/ConstantFolding.cpp
+++ b/lib/Analysis/ConstantFolding.cpp
@@ -916,10 +916,11 @@ Constant *llvm::ConstantFoldInstOperands(unsigned Opcode, Type *DestTy,
       if (TD && CE->getOpcode() == Instruction::IntToPtr) {
         Constant *Input = CE->getOperand(0);
         unsigned InWidth = Input->getType()->getScalarSizeInBits();
-        if (TD->getPointerSizeInBits() < InWidth) {
+        unsigned AS = cast<PointerType>(CE->getType())->getAddressSpace();
+        if (TD->getPointerSizeInBits(AS) < InWidth) {
           Constant *Mask = 
             ConstantInt::get(CE->getContext(), APInt::getLowBitsSet(InWidth,
-                                                  TD->getPointerSizeInBits()));
+                                                  TD->getPointerSizeInBits(AS)));
           Input = ConstantExpr::getAnd(Input, Mask);
         }
         // Do a zext or trunc to get to the dest size.
@@ -932,9 +933,10 @@ Constant *llvm::ConstantFoldInstOperands(unsigned Opcode, Type *DestTy,
     // the int size is >= the ptr size.  This requires knowing the width of a
     // pointer, so it can't be done in ConstantExpr::getCast.
     if (ConstantExpr *CE = dyn_cast<ConstantExpr>(Ops[0]))
-      if (TD &&
-          TD->getPointerSizeInBits() <= CE->getType()->getScalarSizeInBits() &&
-          CE->getOpcode() == Instruction::PtrToInt)
+      if (TD && CE->getOpcode() == Instruction::PtrToInt &&
+          TD->getPointerSizeInBits(
+            cast<PointerType>(CE->getOperand(0)->getType())->getAddressSpace())
+          <= CE->getType()->getScalarSizeInBits())
         return FoldBitCast(CE->getOperand(0), DestTy, *TD);
 
     return ConstantExpr::getCast(Opcode, Ops[0], DestTy);
diff --git a/lib/Analysis/InlineCost.cpp b/lib/Analysis/InlineCost.cpp
index 5f51f775f1..95e58022ca 100644
--- a/lib/Analysis/InlineCost.cpp
+++ b/lib/Analysis/InlineCost.cpp
@@ -243,7 +243,8 @@ bool CallAnalyzer::accumulateGEPOffset(GEPOperator &GEP, APInt &Offset) {
   if (!TD)
     return false;
 
-  unsigned IntPtrWidth = TD->getPointerSizeInBits();
+  unsigned AS = GEP.getPointerAddressSpace();
+  unsigned IntPtrWidth = TD->getPointerSizeInBits(AS);
   assert(IntPtrWidth == Offset.getBitWidth());
 
   for (gep_type_iterator GTI = gep_type_begin(GEP), GTE = gep_type_end(GEP);
@@ -391,7 +392,8 @@ bool CallAnalyzer::visitPtrToInt(PtrToIntInst &I) {
   // Track base/offset pairs when converted to a plain integer provided the
   // integer is large enough to represent the pointer.
   unsigned IntegerSize = I.getType()->getScalarSizeInBits();
-  if (TD && IntegerSize >= TD->getPointerSizeInBits()) {
+  unsigned AS = I.getPointerAddressSpace();
+  if (TD && IntegerSize >= TD->getPointerSizeInBits(AS)) {
     std::pair<Value *, APInt> BaseAndOffset
       = ConstantOffsetPtrs.lookup(I.getOperand(0));
     if (BaseAndOffset.first)
@@ -425,7 +427,8 @@ bool CallAnalyzer::visitIntToPtr(IntToPtrInst &I) {
   // modifications provided the integer is not too large.
   Value *Op = I.getOperand(0);
   unsigned IntegerSize = Op->getType()->getScalarSizeInBits();
-  if (TD && IntegerSize <= TD->getPointerSizeInBits()) {
+  unsigned AS = I.getAddressSpace();
+  if (TD && IntegerSize <= TD->getPointerSizeInBits(AS)) {
     std::pair<Value *, APInt> BaseAndOffset = ConstantOffsetPtrs.lookup(Op);
     if (BaseAndOffset.first)
       ConstantOffsetPtrs[&I] = BaseAndOffset;
@@ -760,7 +763,8 @@ ConstantInt *CallAnalyzer::stripAndComputeInBoundsConstantOffsets(Value *&V) {
   if (!TD || !V->getType()->isPointerTy())
     return 0;
 
-  unsigned IntPtrWidth = TD->getPointerSizeInBits();
+  unsigned AS = cast<PointerType>(V->getType())->getAddressSpace();;
+  unsigned IntPtrWidth = TD->getPointerSizeInBits(AS);
   APInt Offset = APInt::getNullValue(IntPtrWidth);
 
   // Even though we don't look through PHI nodes, we could be called on an
@@ -824,7 +828,8 @@ bool CallAnalyzer::analyzeCall(CallSite CS) {
         // size of the byval type by the target's pointer size.
         PointerType *PTy = cast<PointerType>(CS.getArgument(I)->getType());
         unsigned TypeSize = TD->getTypeSizeInBits(PTy->getElementType());
-        unsigned PointerSize = TD->getPointerSizeInBits();
+        unsigned AS = PTy->getAddressSpace();
+        unsigned PointerSize = TD->getPointerSizeInBits(AS);
         // Ceiling division.
         unsigned NumStores = (TypeSize + PointerSize - 1) / PointerSize;
 
diff --git a/lib/Analysis/InstructionSimplify.cpp b/lib/Analysis/InstructionSimplify.cpp
index b3d62487fc..8e326122fa 100644
--- a/lib/Analysis/InstructionSimplify.cpp
+++ b/lib/Analysis/InstructionSimplify.cpp
@@ -666,7 +666,8 @@ Value *llvm::SimplifyAddInst(Value *Op0, Value *Op1, bool isNSW, bool isNUW,
 /// 'Offset' APInt must be the bitwidth of the target's pointer size.
 static bool accumulateGEPOffset(const DataLayout &TD, GEPOperator *GEP,
                                 APInt &Offset) {
-  unsigned IntPtrWidth = TD.getPointerSizeInBits();
+  unsigned AS = GEP->getPointerAddressSpace();
+  unsigned IntPtrWidth = TD.getPointerSizeInBits(AS);
   assert(IntPtrWidth == Offset.getBitWidth());
 
   gep_type_iterator GTI = gep_type_begin(GEP);
@@ -696,12 +697,14 @@ static bool accumulateGEPOffset(const DataLayout &TD, GEPOperator *GEP,
 /// accumulates the total constant offset applied in the returned constant. It
 /// returns 0 if V is not a pointer, and returns the constant '0' if there are
 /// no constant offsets applied.
+/// FIXME: This function also exists in InlineCost.cpp.
 static Constant *stripAndComputeConstantOffsets(const DataLayout &TD,
                                                 Value *&V) {
   if (!V->getType()->isPointerTy())
     return 0;
 
-  unsigned IntPtrWidth = TD.getPointerSizeInBits();
+  unsigned AS = cast<PointerType>(V->getType())->getAddressSpace();;
+  unsigned IntPtrWidth = TD.getPointerSizeInBits(AS);
   APInt Offset = APInt::getNullValue(IntPtrWidth);
 
   // Even though we don't look through PHI nodes, we could be called on an
@@ -1877,7 +1880,9 @@ static Value *SimplifyICmpInst(unsigned Predicate, Value *LHS, Value *RHS,
     // Turn icmp (ptrtoint x), (ptrtoint/constant) into a compare of the input
     // if the integer type is the same size as the pointer type.
     if (MaxRecurse && Q.TD && isa<PtrToIntInst>(LI) &&
-        Q.TD->getPointerSizeInBits() == DstTy->getPrimitiveSizeInBits()) {
+        Q.TD->getPointerSizeInBits(
+          cast<PtrToIntInst>(LI)->getPointerAddressSpace()) ==
+        DstTy->getPrimitiveSizeInBits()) {
       if (Constant *RHSC = dyn_cast<Constant>(RHS)) {
         // Transfer the cast to the constant.
         if (Value *V = SimplifyICmpInst(Pred, SrcOp,
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp
index 951b442b87..1d7f0692cb 100644
--- a/lib/Analysis/ValueTracking.cpp
+++ b/lib/Analysis/ValueTracking.cpp
@@ -40,7 +40,8 @@ static unsigned getBitWidth(Type *Ty, const DataLayout *TD) {
   if (unsigned BitWidth = Ty->getScalarSizeInBits())
     return BitWidth;
   assert(isa<PointerType>(Ty) && "Expected a pointer type!");
-  return TD ? TD->getPointerSizeInBits() : 0;
+  return TD ?
+    TD->getPointerSizeInBits(cast<PointerType>(Ty)->getAddressSpace()) : 0;
 }
 
 static void ComputeMaskedBitsAddSub(bool Add, Value *Op0, Value *Op1, bool NSW,
@@ -1621,7 +1622,8 @@ Value *llvm::GetPointerBaseWithConstantOffset(Value *Ptr, int64_t &Offset,
   
   // Re-sign extend from the pointer size if needed to get overflow edge cases
   // right.
-  unsigned PtrSize = TD.getPointerSizeInBits();
+  unsigned AS = GEP->getPointerAddressSpace();
+  unsigned PtrSize = TD.getPointerSizeInBits(AS);
   if (PtrSize < 64)
     Offset = SignExtend64(Offset, PtrSize);
   
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index d74a70362a..4de98da655 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -385,7 +385,8 @@ void AsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) {
     //   - __tlv_bootstrap - used to make sure support exists
     //   - spare pointer, used when mapped by the runtime
     //   - pointer to mangled symbol above with initializer
-    unsigned PtrSize = TD->getPointerSizeInBits()/8;
+    unsigned AS = GV->getType()->getAddressSpace();
+    unsigned PtrSize = TD->getPointerSizeInBits(AS)/8;
     OutStreamer.EmitSymbolValue(GetExternalSymbolSymbol("_tlv_bootstrap"),
                           PtrSize, 0);
     OutStreamer.EmitIntValue(0, PtrSize, 0);
@@ -1299,7 +1300,7 @@ void AsmPrinter::EmitXXStructorList(const Constant *List, bool isCtor) {
 
   // Emit the function pointers in the target-specific order
   const DataLayout *TD = TM.getDataLayout();
-  unsigned Align = Log2_32(TD->getPointerPrefAlignment());
+  unsigned Align = Log2_32(TD->getPointerPrefAlignment(0));
   std::stable_sort(Structors.begin(), Structors.end(), priority_order);
   for (unsigned i = 0, e = Structors.size(); i != e; ++i) {
     const MCSection *OutputSection =
@@ -1480,8 +1481,9 @@ static const MCExpr *lowerConstant(const Constant *CV, AsmPrinter &AP) {
     if (Offset == 0)
       return Base;
 
+    unsigned AS = cast<PointerType>(CE->getType())->getAddressSpace();
     // Truncate/sext the offset to the pointer size.
-    unsigned Width = TD.getPointerSizeInBits();
+    unsigned Width = TD.getPointerSizeInBits(AS);
     if (Width < 64)
       Offset = SignExtend64(Offset, Width);
 
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp b/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
index d94e1fe61b..6c17af2e8c 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
@@ -112,7 +112,7 @@ unsigned AsmPrinter::GetSizeOfEncodedValue(unsigned Encoding) const {
   
   switch (Encoding & 0x07) {
   default: llvm_unreachable("Invalid encoded value.");
-  case dwarf::DW_EH_PE_absptr: return TM.getDataLayout()->getPointerSize();
+  case dwarf::DW_EH_PE_absptr: return TM.getDataLayout()->getPointerSize(0);
   case dwarf::DW_EH_PE_udata2: return 2;
   case dwarf::DW_EH_PE_udata4: return 4;
   case dwarf::DW_EH_PE_udata8: return 8;
diff --git a/lib/CodeGen/AsmPrinter/DIE.cpp b/lib/CodeGen/AsmPrinter/DIE.cpp
index 4d73b3c222..73e18cd817 100644
--- a/lib/CodeGen/AsmPrinter/DIE.cpp
+++ b/lib/CodeGen/AsmPrinter/DIE.cpp
@@ -200,7 +200,7 @@ void DIEInteger::EmitValue(AsmPrinter *Asm, unsigned Form) const {
   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->getDataLayout().getPointerSize(); break;
+    Size = Asm->getDataLayout().getPointerSize(0); break;
   default: llvm_unreachable("DIE Value form not supported yet");
   }
   Asm->OutStreamer.EmitIntValue(Integer, Size, 0/*addrspace*/);
@@ -222,7 +222,7 @@ unsigned DIEInteger::SizeOf(AsmPrinter *AP, unsigned Form) const {
   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->getDataLayout().getPointerSize();
+  case dwarf::DW_FORM_addr:  return AP->getDataLayout().getPointerSize(0);
   default: llvm_unreachable("DIE Value form not supported yet");
   }
 }
@@ -249,7 +249,7 @@ void DIELabel::EmitValue(AsmPrinter *AP, unsigned Form) const {
 unsigned DIELabel::SizeOf(AsmPrinter *AP, unsigned Form) const {
   if (Form == dwarf::DW_FORM_data4) return 4;
   if (Form == dwarf::DW_FORM_strp) return 4;
-  return AP->getDataLayout().getPointerSize();
+  return AP->getDataLayout().getPointerSize(0);
 }
 
 #ifndef NDEBUG
@@ -273,7 +273,7 @@ void DIEDelta::EmitValue(AsmPrinter *AP, unsigned Form) const {
 unsigned DIEDelta::SizeOf(AsmPrinter *AP, unsigned Form) const {
   if (Form == dwarf::DW_FORM_data4) return 4;
   if (Form == dwarf::DW_FORM_strp) return 4;
-  return AP->getDataLayout().getPointerSize();
+  return AP->getDataLayout().getPointerSize(0);
 }
 
 #ifndef NDEBUG
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 6acf19ee8c..df162e07a8 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -384,7 +384,7 @@ DIE *DwarfDebug::constructLexicalScopeDIE(CompileUnit *TheCU,
     // DW_AT_ranges appropriately.
     TheCU->addUInt(ScopeDIE, dwarf::DW_AT_ranges, dwarf::DW_FORM_data4,
                    DebugRangeSymbols.size() 
-                   * Asm->getDataLayout().getPointerSize());
+                   * Asm->getDataLayout().getPointerSize(0));
     for (SmallVector<InsnRange, 4>::const_iterator RI = Ranges.begin(),
          RE = Ranges.end(); RI != RE; ++RI) {
       DebugRangeSymbols.push_back(getLabelBeforeInsn(RI->first));
@@ -450,7 +450,7 @@ DIE *DwarfDebug::constructInlinedScopeDIE(CompileUnit *TheCU,
     // DW_AT_ranges appropriately.
     TheCU->addUInt(ScopeDIE, dwarf::DW_AT_ranges, dwarf::DW_FORM_data4,
                    DebugRangeSymbols.size() 
-                   * Asm->getDataLayout().getPointerSize());
+                   * Asm->getDataLayout().getPointerSize(0));
     for (SmallVector<InsnRange, 4>::const_iterator RI = Ranges.begin(),
          RE = Ranges.end(); RI != RE; ++RI) {
       DebugRangeSymbols.push_back(getLabelBeforeInsn(RI->first));
@@ -1765,7 +1765,7 @@ void DwarfDebug::emitDebugInfo() {
     Asm->EmitSectionOffset(Asm->GetTempSymbol("abbrev_begin"),
                            DwarfAbbrevSectionSym);
     Asm->OutStreamer.AddComment("Address Size (in bytes)");
-    Asm->EmitInt8(Asm->getDataLayout().getPointerSize());
+    Asm->EmitInt8(Asm->getDataLayout().getPointerSize(0));
 
     emitDIE(Die);
     Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("info_end", TheCU->getID()));
@@ -1811,14 +1811,14 @@ void DwarfDebug::emitEndOfLineMatrix(unsigned SectionEnd) {
   Asm->EmitInt8(0);
 
   Asm->OutStreamer.AddComment("Op size");
-  Asm->EmitInt8(Asm->getDataLayout().getPointerSize() + 1);
+  Asm->EmitInt8(Asm->getDataLayout().getPointerSize(0) + 1);
   Asm->OutStreamer.AddComment("DW_LNE_set_address");
   Asm->EmitInt8(dwarf::DW_LNE_set_address);
 
   Asm->OutStreamer.AddComment("Section end label");
 
   Asm->OutStreamer.EmitSymbolValue(Asm->GetTempSymbol("section_end",SectionEnd),
-                                   Asm->getDataLayout().getPointerSize(),
+                                   Asm->getDataLayout().getPointerSize(0),
                                    0/*AddrSpace*/);
 
   // Mark end of matrix.
@@ -2047,7 +2047,7 @@ void DwarfDebug::emitDebugLoc() {
   // Start the dwarf loc section.
   Asm->OutStreamer.SwitchSection(
     Asm->getObjFileLowering().getDwarfLocSection());
-  unsigned char Size = Asm->getDataLayout().getPointerSize();
+  unsigned char Size = Asm->getDataLayout().getPointerSize(0);
   Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("debug_loc", 0));
   unsigned index = 1;
   for (SmallVector<DotDebugLocEntry, 4>::iterator
@@ -2144,7 +2144,7 @@ void DwarfDebug::emitDebugRanges() {
   // Start the dwarf ranges section.
   Asm->OutStreamer.SwitchSection(
     Asm->getObjFileLowering().getDwarfRangesSection());
-  unsigned char Size = Asm->getDataLayout().getPointerSize();
+  unsigned char Size = Asm->getDataLayout().getPointerSize(0);
   for (SmallVector<const MCSymbol *, 8>::iterator
          I = DebugRangeSymbols.begin(), E = DebugRangeSymbols.end();
        I != E; ++I) {
@@ -2202,7 +2202,7 @@ void DwarfDebug::emitDebugInlineInfo() {
   Asm->OutStreamer.AddComment("Dwarf Version");
   Asm->EmitInt16(dwarf::DWARF_VERSION);
   Asm->OutStreamer.AddComment("Address Size (in bytes)");
-  Asm->EmitInt8(Asm->getDataLayout().getPointerSize());
+  Asm->EmitInt8(Asm->getDataLayout().getPointerSize(0));
 
   for (SmallVector<const MDNode *, 4>::iterator I = InlinedSPNodes.begin(),
          E = InlinedSPNodes.end(); I != E; ++I) {
@@ -2233,7 +2233,7 @@ void DwarfDebug::emitDebugInlineInfo() {
 
       if (Asm->isVerbose()) Asm->OutStreamer.AddComment("low_pc");
       Asm->OutStreamer.EmitSymbolValue(LI->first,
-                                       Asm->getDataLayout().getPointerSize(),0);
+                                       Asm->getDataLayout().getPointerSize(0),0);
     }
   }
 
diff --git a/lib/CodeGen/AsmPrinter/DwarfException.cpp b/lib/CodeGen/AsmPrinter/DwarfException.cpp
index 08fb6b3f52..31d07141a1 100644
--- a/lib/CodeGen/AsmPrinter/DwarfException.cpp
+++ b/