initialize SetCCResultContents, fixing PR1693


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42193 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index 4d87ac3..5943cc1 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -161,6 +161,7 @@
   StackPointerRegisterToSaveRestore = 0;
   ExceptionPointerRegister = 0;
   ExceptionSelectorRegister = 0;
+  SetCCResultContents = UndefinedSetCCResult;
   SchedPreferenceInfo = SchedulingForLatency;
   JumpBufSize = 0;
   JumpBufAlignment = 0;