Uniform and precise source positions for inlining

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index 749188f6bf27fc514b196624e82cf0e5d74a36ab..6aef6a87bca2fd884070f6e72f335178da01dbe4 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -1032,6 +1032,7 @@ Handle<Script> Factory::NewScript(Handle<String> source) {
   script->set_type(Script::TYPE_NORMAL);
   script->set_wrapper(heap->undefined_value());
   script->set_line_ends(heap->undefined_value());
+  if (FLAG_trace_deopt) Script::InitLineEnds(script);

[Yang, 2016/11/08 13:32:13]

Can we do this at the end so that we have a fully initialized script object?

Also, this probably doesn't make any sense for wasm scripts, or our own js
builtins. So I would prefer doing this at the call sites of NewScript. Of
course, for FLAG_trace_deopt this simple solution probably suffices.

   script->set_eval_from_shared(heap->undefined_value());
   script->set_eval_from_position(0);
   script->set_shared_function_infos(Smi::kZero);