Double field values need sNaN -> qNaN canonicalization.

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index 18bc67c5cd4082b517d7182597bce731a7e0054c..20d67100552a370305bf73d49e8fa6ca0f51a2b9 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -4063,9 +4063,11 @@ bool HStoreKeyed::NeedsCanonicalization() {
       Representation from = HChange::cast(value())->from();
       return from.IsTagged() || from.IsHeapObject();
     }
-    case kPhi:
+    case kLoadNamedField:
+    case kPhi: {
       // Better safe than sorry...
       return true;
+    }
     default:
       return false;
   }