ARM: Enable VFP default NaN mode

src/arm/lithium-arm.h

Index: src/arm/lithium-arm.h
diff --git a/src/arm/lithium-arm.h b/src/arm/lithium-arm.h
index e0e5815f5acddd91915b669a3ef119cb8906200e..6486cad2bbcf68842e3be872d75c9a5398d6e76d 100644
--- a/src/arm/lithium-arm.h
+++ b/src/arm/lithium-arm.h
@@ -2176,7 +2176,13 @@ class LStoreKeyed: public LTemplateInstruction<0, 3, 0> {
   DECLARE_HYDROGEN_ACCESSOR(StoreKeyed)
 
   virtual void PrintDataTo(StringStream* stream);
-  bool NeedsCanonicalization() { return hydrogen()->NeedsCanonicalization(); }
+  bool NeedsCanonicalization() {
+    if (hydrogen()->value()->IsAdd() || hydrogen()->value()->IsSub() ||
+        hydrogen()->value()->IsMul() || hydrogen()->value()->IsDiv()) {
+      return false;
+    }
+    return hydrogen()->NeedsCanonicalization();
+  }
   uint32_t additional_index() const { return hydrogen()->index_offset(); }
 };