[Ignition/turbo] Add a NewWithSpread bytecode.

src/objects.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 #include <memory>
 
@@ skipping 1487 matching lines @@
 
   // Tries to convert an object to an array length. Returns true and sets the
   // output parameter if it succeeds.
   inline bool ToArrayLength(uint32_t* index);
 
   // Tries to convert an object to an array index. Returns true and sets the
   // output parameter if it succeeds. Equivalent to ToArrayLength, but does not
   // allow kMaxUInt32.
   inline bool ToArrayIndex(uint32_t* index);
 
+  // Returns true if the result of iterating over the object is the same
+  // (including observable effects) as simply accessing the properties between 0
+  // and length.
+  bool IterationHasObservableEffects();
+
   DECLARE_VERIFIER(Object)
 #ifdef VERIFY_HEAP
   // Verify a pointer is a valid object pointer.
   static void VerifyPointer(Object* p);
 #endif
 
   inline void VerifyApiCallResultType();
 
   // ES6 19.1.3.6 Object.prototype.toString
   MUST_USE_RESULT static MaybeHandle<String> ObjectProtoToString(
@@ skipping 10421 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_