diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index e1b5ed1..93de4f0 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -3917,8 +3917,7 @@
       Flags |= ISD::ParamFlags::ByVal;
       const PointerType *Ty = cast<PointerType>(I->getType());
       const Type *ElementTy = Ty->getElementType();
-      unsigned FrameAlign =
-          Log2_32(getTargetData()->getCallFrameTypeAlignment(ElementTy));
+      unsigned FrameAlign = Log2_32(getByValTypeAlignment(ElementTy));
       unsigned FrameSize  = getTargetData()->getABITypeSize(ElementTy);
       Flags |= (FrameAlign << ISD::ParamFlags::ByValAlignOffs);
       Flags |= (FrameSize  << ISD::ParamFlags::ByValSizeOffs);
@@ -4047,8 +4046,7 @@
       Flags |= ISD::ParamFlags::ByVal;
       const PointerType *Ty = cast<PointerType>(Args[i].Ty);
       const Type *ElementTy = Ty->getElementType();
-      unsigned FrameAlign =
-          Log2_32(getTargetData()->getCallFrameTypeAlignment(ElementTy));
+      unsigned FrameAlign = Log2_32(getByValTypeAlignment(ElementTy));
       unsigned FrameSize  = getTargetData()->getABITypeSize(ElementTy);
       Flags |= (FrameAlign << ISD::ParamFlags::ByValAlignOffs);
       Flags |= (FrameSize  << ISD::ParamFlags::ByValSizeOffs);
diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index 6fb2702..3ccfcfa 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -414,6 +414,12 @@
   return 1;
 }
 
+/// getByValTypeAlignment - Return the desired alignment for ByVal aggregate
+/// function arguments in the caller parameter area.
+unsigned TargetLowering::getByValTypeAlignment(const Type *Ty) const {
+  return Log2_32(TD->getCallFrameTypeAlignment(Ty));
+}
+
 SDOperand TargetLowering::getPICJumpTableRelocBase(SDOperand Table,
                                                    SelectionDAG &DAG) const {
   if (usesGlobalOffsetTable())