Use right address space pointer size

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194940 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 85e5494..1210534 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1126,9 +1126,10 @@
                                        unsigned char TargetFlags) {
   assert((TargetFlags == 0 || isTargetGA) &&
          "Cannot set target flags on target-independent globals");
+  const TargetLowering *TLI = TM.getTargetLowering();
 
   // Truncate (with sign-extension) the offset value to the pointer size.
-  unsigned BitWidth = TM.getTargetLowering()->getPointerTy().getSizeInBits();
+  unsigned BitWidth = TLI->getPointerTypeSizeInBits(GV->getType());
   if (BitWidth < 64)
     Offset = SignExtend64(Offset, BitWidth);