Reland "Also mark as prototype when passing in while creating a function."

Skip gc-stress for test relying on stable feedback (and hence stable gc timing).

BUG=
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/441873005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22852 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/factory.cc

@@ -1268,6 +1268,11 @@ Handle<JSFunction> Factory::NewFunction(Handle<String> name,
       ? isolate()->sloppy_function_with_readonly_prototype_map()
       : isolate()->sloppy_function_map();
   Handle<JSFunction> result = NewFunction(map, name, code);
+  if (!prototype->IsTheHole()) {
+    Handle<JSObject> js_proto = Handle<JSObject>::cast(prototype);
+    Handle<Map> new_map = Map::CopyAsPrototypeMap(handle(js_proto->map()));
+    JSObject::MigrateToMap(js_proto, new_map);
+  }
   result->set_prototype_or_initial_map(*prototype);
   return result;
 }

src/objects.cc

@@ -7288,6 +7288,7 @@ Handle<Map> Map::CopyForObserved(Handle<Map> map) {
 
 
 Handle<Map> Map::CopyAsPrototypeMap(Handle<Map> map) {
+  if (map->is_prototype_map()) return map;
   Handle<Map> result = Copy(map);
   result->mark_prototype_map();
   return result;

test/mjsunit/mjsunit.status

@@ -246,15 +246,16 @@
   'array-feedback': [SKIP],
   'array-literal-feedback': [SKIP],
   'd8-performance-now': [SKIP],
+  'debug-stepout-scope-part8': [PASS, ['arch == arm ', FAIL]],
   'elements-kind': [SKIP],
+  'elements-transition-hoisting': [SKIP],
   'fast-prototype': [SKIP],
+  'getters-on-elements': [SKIP],
+  'harmony/block-let-crankshaft': [SKIP],
   'opt-elements-kind': [SKIP],
   'osr-elements-kind': [SKIP],
   'regress/regress-165637': [SKIP],
   'regress/regress-2249': [SKIP],
-  'debug-stepout-scope-part8': [PASS, ['arch == arm ', FAIL]],
-  'elements-transition-hoisting': [PASS, FAIL],
-  'getters-on-elements': [PASS, FAIL],
   # Tests taking too long
   'debug-stepout-scope-part8': [SKIP],
   'mirror-object': [SKIP],