Grab the TargetLowering info from the DAG rather than querying for
a subtarget.

llvm-svn: 227156
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index cb58e13..df0c4ef 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -5699,9 +5699,8 @@
 
     CLI.setChain(getRoot());
   }
-
-  const TargetLowering *TLI = TM.getSubtargetImpl()->getTargetLowering();
-  std::pair<SDValue, SDValue> Result = TLI->LowerCallTo(CLI);
+  const TargetLowering &TLI = DAG.getTargetLoweringInfo();
+  std::pair<SDValue, SDValue> Result = TLI.LowerCallTo(CLI);
 
   assert((CLI.IsTailCall || Result.second.getNode()) &&
          "Non-null chain expected with non-tail call!");