Store SharedFunctionInfos of a Script in a FixedArray indexed by their ID

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index 72d71ee654965831d1daf68d65c0a9f503cac3f1..06ba82a96caf13cbe44dbb49ca1e88097aa6b387 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -167,6 +167,13 @@ Handle<FixedArray> Factory::NewFixedArrayWithHoles(int size,
       FixedArray);
 }
 
+Handle<FixedArray> Factory::NewFixedArrayWithSmis(int size, int value,
+                                                  PretenureFlag pretenure) {
+  DCHECK_LT(0, size);
+  CALL_HEAP_FUNCTION(isolate(), isolate()->heap()->AllocateFixedArrayWithFiller(
+                                    size, pretenure, Smi::FromInt(value)),
+                     FixedArray);
+}
 
 Handle<FixedArray> Factory::NewUninitializedFixedArray(int size) {
   CALL_HEAP_FUNCTION(
@@ -1058,7 +1065,7 @@ Handle<Script> Factory::NewScript(Handle<String> source) {
   script->set_line_ends(heap->undefined_value());
   script->set_eval_from_shared(heap->undefined_value());
   script->set_eval_from_position(0);
-  script->set_shared_function_infos(Smi::kZero);
+  script->set_shared_function_infos(*empty_fixed_array(), SKIP_WRITE_BARRIER);
   script->set_flags(0);
 
   heap->set_script_list(*WeakFixedArray::Add(script_list(), script));