Allow GVN to separately optimize FastDoubleArrays

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index 9b7a95b2f0a00923529e4577de47a9ad37a630a2..8f401a8214b94577eaa7435bc64f18e4f82f117e 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -184,6 +184,7 @@ class LChunkBuilder;
   V(InobjectFields)                            \
   V(BackingStoreFields)                        \
   V(ArrayElements)                             \
+  V(DoubleArrayElements)                       \
   V(SpecializedArrayElements)                  \
   V(GlobalVars)                                \
   V(Maps)                                      \
@@ -3524,7 +3525,7 @@ class HLoadKeyedFastDoubleElement: public HTemplateInstruction<2> {
     SetOperandAt(0, elements);
     SetOperandAt(1, key);
     set_representation(Representation::Double());
-    SetFlag(kDependsOnArrayElements);
+    SetFlag(kDependsOnDoubleArrayElements);
     SetFlag(kUseGVN);
   }
 
@@ -3742,7 +3743,7 @@ class HStoreKeyedFastDoubleElement: public HTemplateInstruction<3> {
     SetOperandAt(0, elements);
     SetOperandAt(1, key);
     SetOperandAt(2, val);
-    SetFlag(kChangesArrayElements);
+    SetFlag(kChangesDoubleArrayElements);
   }
 
   virtual Representation RequiredInputRepresentation(int index) const {