Reduce SharedFunctionInfo size.

src/objects.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_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 6893 matching lines @@
 
   // Layout description.
   // Pointer fields.
   static const int kNameOffset = HeapObject::kHeaderSize;
   static const int kCodeOffset = kNameOffset + kPointerSize;
   static const int kOptimizedCodeMapOffset = kCodeOffset + kPointerSize;
   static const int kScopeInfoOffset = kOptimizedCodeMapOffset + kPointerSize;
   static const int kConstructStubOffset = kScopeInfoOffset + kPointerSize;
   static const int kInstanceClassNameOffset =
       kConstructStubOffset + kPointerSize;
+  // Shared field: a function is either an API function or debuggable.
   static const int kFunctionDataOffset =
       kInstanceClassNameOffset + kPointerSize;
+  static const int kDebugInfoOffset = kFunctionDataOffset;
   static const int kScriptOffset = kFunctionDataOffset + kPointerSize;
-  static const int kDebugInfoOffset = kScriptOffset + kPointerSize;
-  static const int kInferredNameOffset = kDebugInfoOffset + kPointerSize;
+  static const int kInferredNameOffset = kScriptOffset + kPointerSize;
   static const int kFeedbackVectorOffset =
       kInferredNameOffset + kPointerSize;
 #if TRACE_MAPS
   static const int kUniqueIdOffset = kFeedbackVectorOffset + kPointerSize;
   static const int kLastPointerFieldOffset = kUniqueIdOffset;
 #else
   // Just to not break the postmortrem support with conditional offsets
   static const int kUniqueIdOffset = kFeedbackVectorOffset;
   static const int kLastPointerFieldOffset = kFeedbackVectorOffset;
 #endif
@@ skipping 3871 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_