Index: llvm/include/llvm/CodeGen/TargetCallingConv.h
===================================================================
--- llvm/include/llvm/CodeGen/TargetCallingConv.h
+++ llvm/include/llvm/CodeGen/TargetCallingConv.h
@@ -45,6 +45,7 @@
     unsigned IsInConsecutiveRegsLast : 1;
     unsigned IsInConsecutiveRegs : 1;
     unsigned IsCopyElisionCandidate : 1; ///< Argument copy elision candidate
+    unsigned IsPointer : 1;
 
     unsigned ByValSize; ///< Byval struct size
 
@@ -55,7 +56,7 @@
           IsSwiftSelf(0), IsSwiftError(0), IsHva(0), IsHvaStart(0),
           IsSecArgPass(0), ByValAlign(0), OrigAlign(0),
           IsInConsecutiveRegsLast(0), IsInConsecutiveRegs(0),
-          IsCopyElisionCandidate(0), ByValSize(0) {
+          IsCopyElisionCandidate(0), IsPointer(0), ByValSize(0) {
       static_assert(sizeof(*this) == 2 * sizeof(unsigned), "flags are too big");
     }
 
@@ -113,6 +114,9 @@
     bool isCopyElisionCandidate()  const { return IsCopyElisionCandidate; }
     void setCopyElisionCandidate() { IsCopyElisionCandidate = 1; }
 
+    bool isPointer()  const { return IsPointer; }
+    void setPointer() { IsPointer = 1; }
+
     unsigned getByValAlign() const { return (1U << ByValAlign) / 2; }
     void setByValAlign(unsigned A) {
       ByValAlign = Log2_32(A) + 1;
Index: llvm/include/llvm/Target/TargetCallingConv.td
===================================================================
--- llvm/include/llvm/Target/TargetCallingConv.td
+++ llvm/include/llvm/Target/TargetCallingConv.td
@@ -82,6 +82,10 @@
 /// CCIfNotVarArg - If the current function is not vararg - apply the action
 class CCIfNotVarArg<CCAction A> : CCIf<"!State.isVarArg()", A> {}
 
+/// CCIfPtr - If the top-level parent of the current argument had
+/// pointer type.
+class CCIfPtr<CCAction A> : CCIf<"ArgFlags.isPointer()", A> {}
+
 /// CCAssignToReg - This action matches if there is a register in the specified
 /// list that is still available.  If so, it assigns the value to the first
 /// available register and succeeds.
Index: llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
===================================================================
--- llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -6096,9 +6096,11 @@
   // Emit a library call.
   TargetLowering::ArgListTy Args;
   TargetLowering::ArgListEntry Entry;
-  Entry.Ty = getDataLayout().getIntPtrType(*getContext());
+  Entry.Ty = Type::getInt8PtrTy(*getContext());
   Entry.Node = Dst; Args.push_back(Entry);
   Entry.Node = Src; Args.push_back(Entry);
+
+  Entry.Ty = getDataLayout().getIntPtrType(*getContext());
   Entry.Node = Size; Args.push_back(Entry);
   // FIXME: pass in SDLoc
   TargetLowering::CallLoweringInfo CLI(*this);
@@ -6198,9 +6200,11 @@
   // Emit a library call.
   TargetLowering::ArgListTy Args;
   TargetLowering::ArgListEntry Entry;
-  Entry.Ty = getDataLayout().getIntPtrType(*getContext());
+  Entry.Ty = Type::getInt8PtrTy(*getContext());
   Entry.Node = Dst; Args.push_back(Entry);
   Entry.Node = Src; Args.push_back(Entry);
+
+  Entry.Ty = getDataLayout().getIntPtrType(*getContext());
   Entry.Node = Size; Args.push_back(Entry);
   // FIXME:  pass in SDLoc
   TargetLowering::CallLoweringInfo CLI(*this);
@@ -6293,16 +6297,15 @@
   checkAddrSpaceIsValidForLibcall(TLI, DstPtrInfo.getAddrSpace());
 
   // Emit a library call.
-  Type *IntPtrTy = getDataLayout().getIntPtrType(*getContext());
   TargetLowering::ArgListTy Args;
   TargetLowering::ArgListEntry Entry;
-  Entry.Node = Dst; Entry.Ty = IntPtrTy;
+  Entry.Node = Dst; Entry.Ty = Type::getInt8PtrTy(*getContext());
   Args.push_back(Entry);
   Entry.Node = Src;
   Entry.Ty = Src.getValueType().getTypeForEVT(*getContext());
   Args.push_back(Entry);
   Entry.Node = Size;
-  Entry.Ty = IntPtrTy;
+  Entry.Ty = getDataLayout().getIntPtrType(*getContext());
   Args.push_back(Entry);
 
   // FIXME: pass in SDLoc
Index: llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
===================================================================
--- llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -1672,6 +1672,15 @@
         if (RetInReg)
           Flags.setInReg();
 
+        if (I.getOperand(0)->getType()->isPointerTy())
+          Flags.setPointer();
+
+        if (NeedsRegBlock) {
+          Flags.setInConsecutiveRegs();
+          if (j == NumValues - 1)
+            Flags.setInConsecutiveRegsLast();
+        }
+
         // Propagate extension type if any
         if (ExtendKind == ISD::SIGN_EXTEND)
           Flags.setSExt();
@@ -8564,9 +8573,12 @@
                                                        CLI.CallConv, VT);
       for (unsigned i = 0; i != NumRegs; ++i) {
         ISD::InputArg MyFlags;
+        MyFlags.Flags = Flags;
         MyFlags.VT = RegisterVT;
         MyFlags.ArgVT = VT;
         MyFlags.Used = CLI.IsReturnValueUsed;
+        if (CLI.RetTy->isPointerTy())
+          MyFlags.Flags.setPointer();
         if (CLI.RetSExt)
           MyFlags.Flags.setSExt();
         if (CLI.RetZExt)
@@ -8617,6 +8629,8 @@
       // specify the alignment it wants.
       unsigned OriginalAlignment = getABIAlignmentForCallingConv(ArgTy, DL);
 
+      if (Args[i].Ty->isPointerTy())
+        Flags.setPointer();
       if (Args[i].IsZExt)
         Flags.setZExt();
       if (Args[i].IsSExt)
@@ -9105,6 +9119,8 @@
       unsigned OriginalAlignment =
           TLI->getABIAlignmentForCallingConv(ArgTy, DL);
 
+      if (Arg.getType()->isPointerTy())
+        Flags.setPointer();
       if (Arg.hasAttribute(Attribute::ZExt))
         Flags.setZExt();
       if (Arg.hasAttribute(Attribute::SExt))