Fix usage of literal cloning for large double arrays.

src/ast/ast.h

Index: src/ast/ast.h
diff --git a/src/ast/ast.h b/src/ast/ast.h
index d60cee90a00dacacf4f0c9b152db0b4fa8da1492..85b0cb514be636b78977105088b7b73a362ac10c 100644
--- a/src/ast/ast.h
+++ b/src/ast/ast.h
@@ -1415,6 +1415,9 @@ class ObjectLiteral final : public MaterializedLiteral {
   // marked expressions, no store code is emitted.
   void CalculateEmitStore(Zone* zone);
 
+  // Determines whether the {FastCloneShallowObjectStub} can be used.
+  bool IsFastCloningSupported() const;
+
   // Assemble bitfield of flags for the CreateObjectLiteral helper.
   int ComputeFlags(bool disable_mementos = false) const {
     int flags = fast_elements() ? kFastElements : kNoFlags;
@@ -1558,6 +1561,9 @@ class ArrayLiteral final : public MaterializedLiteral {
   // Populate the constant elements fixed array.
   void BuildConstantElements(Isolate* isolate);
 
+  // Determines whether the {FastCloneShallowArrayStub} can be used.
+  bool IsFastCloningSupported() const;
+
   // Assemble bitfield of flags for the CreateArrayLiteral helper.
   int ComputeFlags(bool disable_mementos = false) const {
     int flags = depth() == 1 ? kShallowElements : kNoFlags;