Fix PR11985
    
- BlockAddress has no support of BA + offset form and there is no way to
  propagate that offset into machine operand;
- Add BA + offset support and a new interface 'getTargetBlockAddress' to
  simplify target block address forming;
- All targets are modified to use new interface and X86 backend is enhanced to
  support BA + offset addressing.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163743 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/MSP430/MSP430ISelLowering.cpp b/lib/Target/MSP430/MSP430ISelLowering.cpp
index f8b7e14..bda688c 100644
--- a/lib/Target/MSP430/MSP430ISelLowering.cpp
+++ b/lib/Target/MSP430/MSP430ISelLowering.cpp
@@ -655,7 +655,7 @@
                                                 SelectionDAG &DAG) const {
   DebugLoc dl = Op.getDebugLoc();
   const BlockAddress *BA = cast<BlockAddressSDNode>(Op)->getBlockAddress();
-  SDValue Result = DAG.getBlockAddress(BA, getPointerTy(), /*isTarget=*/true);
+  SDValue Result = DAG.getTargetBlockAddress(BA, getPointerTy());
 
   return DAG.getNode(MSP430ISD::Wrapper, dl, getPointerTy(), Result);
 }