Index: lib/Target/X86/X86ISelLowering.h
===================================================================
--- lib/Target/X86/X86ISelLowering.h
+++ lib/Target/X86/X86ISelLowering.h
@@ -905,7 +905,6 @@
     /// Keep a pointer to the X86Subtarget around so that we can
     /// make the right decision when generating code for different targets.
     const X86Subtarget *Subtarget;
-    const DataLayout *TD;
 
     /// Select between SSE or x87 floating point ops.
     /// When SSE is available, use it for f32 operations.
Index: lib/Target/X86/X86ISelLowering.cpp
===================================================================
--- lib/Target/X86/X86ISelLowering.cpp
+++ lib/Target/X86/X86ISelLowering.cpp
@@ -76,7 +76,7 @@
     : TargetLowering(TM), Subtarget(&STI) {
   X86ScalarSSEf64 = Subtarget->hasSSE2();
   X86ScalarSSEf32 = Subtarget->hasSSE1();
-  TD = TM.getDataLayout();
+  auto &DL = *TM.getDataLayout();
 
   // Set up the TargetLowering object.
   static const MVT IntVTs[] = { MVT::i8, MVT::i16, MVT::i32, MVT::i64 };
@@ -505,7 +505,7 @@
   setOperationAction(ISD::STACKSAVE,          MVT::Other, Expand);
   setOperationAction(ISD::STACKRESTORE,       MVT::Other, Expand);
 
-  setOperationAction(ISD::DYNAMIC_STACKALLOC, getPointerTy(*TD), Custom);
+  setOperationAction(ISD::DYNAMIC_STACKALLOC, getPointerTy(DL), Custom);
 
   // GC_TRANSITION_START and GC_TRANSITION_END need custom lowering.
   setOperationAction(ISD::GC_TRANSITION_START, MVT::Other, Custom);
@@ -16439,9 +16439,11 @@
 
         for (FunctionType::param_iterator I = FTy->param_begin(),
              E = FTy->param_end(); I != E; ++I, ++Idx)
-          if (Attrs.hasAttribute(Idx, Attribute::InReg))
+          if (Attrs.hasAttribute(Idx, Attribute::InReg)) {
+            auto &DL = DAG.getDataLayout();
             // FIXME: should only count parameters that are lowered to integers.
-            InRegCount += (TD->getTypeSizeInBits(*I) + 31) / 32;
+            InRegCount += (DL.getTypeSizeInBits(*I) + 31) / 32;
+          }
 
         if (InRegCount > 2) {
           report_fatal_error("Nest register in use - reduce number of inreg"