diff --git a/lib/CodeGen/TargetLoweringBase.cpp b/lib/CodeGen/TargetLoweringBase.cpp
index 2a02f6a..f0f3d34 100644
--- a/lib/CodeGen/TargetLoweringBase.cpp
+++ b/lib/CodeGen/TargetLoweringBase.cpp
@@ -744,10 +744,17 @@
   delete &TLOF;
 }
 
-MVT TargetLoweringBase::getShiftAmountTy(EVT LHSTy) const {
+MVT TargetLoweringBase::getScalarShiftAmountTy(EVT LHSTy) const {
   return MVT::getIntegerVT(8*TD->getPointerSize(0));
 }
 
+EVT TargetLoweringBase::getShiftAmountTy(EVT LHSTy) const {
+  assert(LHSTy.isInteger() && "Shift amount is not an integer type!");
+  if (LHSTy.isVector())
+    return LHSTy;
+  return getScalarShiftAmountTy(LHSTy);
+}
+
 /// canOpTrap - Returns true if the operation can trap for the value type.
 /// VT must be a legal type.
 bool TargetLoweringBase::canOpTrap(unsigned Op, EVT VT) const {