Reduce SharedFunctionInfo size.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index a4ca8c34e29eeec8737c7f0b3025952c319b54cd..1f73c74aebea09e4fadfbae211e95941039adf90 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -5476,7 +5476,7 @@ bool SharedFunctionInfo::is_simple_parameter_list() {
 
 
 bool SharedFunctionInfo::HasDebugInfo() {
-  bool has_debug_info = debug_info()->IsStruct();
+  bool has_debug_info = !IsApiFunction() && debug_info()->IsStruct();

[Jakob Kummerow, 2015/07/22 12:24:02]

I can haz DCHECK(!IsApiFunction()) inside debug_info()? That probably requires
adding checks at other call sites, but would let me sleep better.

   DCHECK(!has_debug_info || HasDebugCode());
   return has_debug_info;
 }
@@ -5590,6 +5590,7 @@ void SharedFunctionInfo::TryReenableOptimization() {
 
 
 bool SharedFunctionInfo::IsSubjectToDebugging() {
+  if (IsApiFunction()) return false;
   Object* script_obj = script();
   if (script_obj->IsUndefined()) return false;
   Script* script = Script::cast(script_obj);