Fix Object.prototype.toString.call(proxy)

src/full-codegen/x64/full-codegen-x64.cc

 // 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.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 3190 matching lines @@
   __ JumpIfSmi(rax, &null);
 
   // Check that the object is a JS object but take special care of JS
   // functions to make sure they have 'Function' as their class.
   // Assume that there are only two callable types, and one of them is at
   // either end of the type range for JS object types. Saves extra comparisons.
   STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2);
   __ CmpObjectType(rax, FIRST_JS_RECEIVER_TYPE, rax);
   // Map is now in rax.
   __ j(below, &null);
-  STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE ==
-                FIRST_JS_RECEIVER_TYPE + 1);
-  __ j(equal, &function);
 
   __ CmpInstanceType(rax, LAST_JS_RECEIVER_TYPE);
   STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE ==
                 LAST_JS_RECEIVER_TYPE - 1);
   __ j(equal, &function);
   // Assume that there is no larger type.
   STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == LAST_TYPE - 1);
 
   // Check if the constructor in the map is a JS function.
   __ GetMapConstructor(rax, rax, rbx);
@@ skipping 1607 matching lines @@
             Assembler::target_address_at(call_target_address,
                                          unoptimized_code));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64