NVPTX: Initialize the UseF32FTZ flag.

llvm-svn: 156232
diff --git a/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp b/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
index e26f9e4..4e92f0e 100644
--- a/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
+++ b/llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
@@ -78,6 +78,8 @@
 
   allowFMA = (FMAContractLevel >= 1) || UseFMADInstruction;
 
+  UseF32FTZ = false;
+
   doMulWide = (OptLevel > 0);
 
   // Decide how to translate f32 div