Merge ISD::TRUNCSTORE to ISD::STORE. Switch to using StoreSDNode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30945 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index 0183678..ee1c4ac 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -28,6 +28,7 @@
   // All operations default to being supported.
   memset(OpActions, 0, sizeof(OpActions));
   memset(LoadXActions, 0, sizeof(LoadXActions));
+  memset(&StoreXActions, 0, sizeof(StoreXActions));
 
   IsLittleEndian = TD->isLittleEndian();
   UsesGlobalOffsetTable = false;