Remove some dead code in src/objects.cc

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 952 matching lines @@
   __ j(equal, &exit);
   __ CompareRoot(rax, Heap::kUndefinedValueRootIndex);
   __ j(equal, &exit);
   __ bind(&convert);
   ToObjectStub stub(isolate());
   __ CallStub(&stub);
   __ bind(&done_convert);
   PrepareForBailoutForId(stmt->ToObjectId(), TOS_REG);
   __ Push(rax);
 
-  // Check cache validity in generated code. This is a fast case for
-  // the JSObject::IsSimpleEnum cache validity checks. If we cannot
-  // guarantee cache validity, call the runtime system to check cache
-  // validity or get the property names in a fixed array.
-  // Note: Proxies never have an enum cache, so will always take the
-  // slow path.
+  // Check cache validity in generated code. If we cannot guarantee cache
+  // validity, call the runtime system to check cache validity or get the
+  // property names in a fixed array. Note: Proxies never have an enum cache,
+  // so will always take the slow path.
   Label call_runtime;
   __ CheckEnumCache(&call_runtime);
 
   // The enum cache is valid.  Load the map of the object being
   // iterated over and use the cache for the iteration.
   Label use_cache;
   __ movp(rax, FieldOperand(rax, HeapObject::kMapOffset));
   __ jmp(&use_cache, Label::kNear);
 
   // Get the set of properties to enumerate.
@@ skipping 2868 matching lines @@
   DCHECK_EQ(
       isolate->builtins()->OnStackReplacement()->entry(),
       Assembler::target_address_at(call_target_address, unoptimized_code));
   return ON_STACK_REPLACEMENT;
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64