Reland "Remove the weak list of views from array buffers"

src/hydrogen.h

 // Copyright 2012 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_HYDROGEN_H_
 #define V8_HYDROGEN_H_
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 1845 matching lines @@
                                     HValue* payload);
 
   HInstruction* BuildConstantMapCheck(Handle<JSObject> constant);
   HInstruction* BuildCheckPrototypeMaps(Handle<JSObject> prototype,
                                         Handle<JSObject> holder);
 
   HInstruction* BuildGetNativeContext(HValue* closure);
   HInstruction* BuildGetNativeContext();
   HInstruction* BuildGetScriptContext(int context_index);
   HInstruction* BuildGetArrayFunction();
+  HValue* BuildArrayBufferViewFieldAccessor(HValue* object,
+                                            HValue* checked_object,
+                                            FieldIndex index);
+
 
  protected:
   void SetSourcePosition(int position) {
     if (position != RelocInfo::kNoPosition) {
       position_.set_position(position - start_position_);
     }
     // Otherwise position remains unknown.
   }
 
   void EnterInlinedSource(int start_position, int id) {
@@ skipping 672 matching lines @@
           DCHECK(String::Equals(isolate()->factory()->length_string(), name_));
           *access = HObjectAccess::ForArrayLength(map_->elements_kind());
         } else {
           *access = HObjectAccess::ForMapAndOffset(map_, offset);
         }
         return true;
       }
       return false;
     }
 
+    bool IsJSArrayBufferViewFieldAccessor() {
+      int offset;  // unused
+      return Accessors::IsJSArrayBufferViewFieldAccessor(map_, name_, &offset);
+    }
+
+    bool GetJSArrayBufferViewFieldAccess(HObjectAccess* access) {
+      int offset;
+      if (Accessors::IsJSArrayBufferViewFieldAccessor(map_, name_, &offset)) {
+        *access = HObjectAccess::ForMapAndOffset(map_, offset);
+        return true;
+      }
+      return false;
+    }
+
     bool has_holder() { return !holder_.is_null(); }
     bool IsLoad() const { return access_type_ == LOAD; }
 
     Isolate* isolate() const { return builder_->isolate(); }
     Handle<JSObject> holder() { return holder_; }
     Handle<JSFunction> accessor() { return accessor_; }
     Handle<Object> constant() { return constant_; }
     Handle<Map> transition() { return transition_; }
     SmallMapList* field_maps() { return &field_maps_; }
     HType field_type() const { return field_type_; }
@@ skipping 104 matching lines @@
     SmallMapList field_maps_;
     HType field_type_;
     HObjectAccess access_;
 
     enum { NOT_FOUND, DESCRIPTOR_TYPE, TRANSITION_TYPE } lookup_type_;
     Handle<Map> transition_;
     int number_;
     PropertyDetails details_;
   };
 
-  HInstruction* BuildMonomorphicAccess(PropertyAccessInfo* info,
-                                       HValue* object,
-                                       HValue* checked_object,
-                                       HValue* value,
-                                       BailoutId ast_id,
-                                       BailoutId return_id,
-                                       bool can_inline_accessor = true);
+  HValue* BuildMonomorphicAccess(PropertyAccessInfo* info, HValue* object,
+                                 HValue* checked_object, HValue* value,
+                                 BailoutId ast_id, BailoutId return_id,
+                                 bool can_inline_accessor = true);
 
-  HInstruction* BuildNamedAccess(PropertyAccessType access,
-                                 BailoutId ast_id,
-                                 BailoutId reutrn_id,
-                                 Expression* expr,
-                                 HValue* object,
-                                 Handle<String> name,
-                                 HValue* value,
-                                 bool is_uninitialized = false);
+  HValue* BuildNamedAccess(PropertyAccessType access, BailoutId ast_id,
+                           BailoutId reutrn_id, Expression* expr,
+                           HValue* object, Handle<String> name, HValue* value,
+                           bool is_uninitialized = false);
 
   void HandlePolymorphicCallNamed(Call* expr,
                                   HValue* receiver,
                                   SmallMapList* types,
                                   Handle<String> name);
   void HandleLiteralCompareTypeof(CompareOperation* expr,
                                   Expression* sub_expr,
                                   Handle<String> check);
   void HandleLiteralCompareNil(CompareOperation* expr,
                                Expression* sub_expr,
@@ skipping 329 matching lines @@
   }
 
  private:
   HGraphBuilder* builder_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_