[parser] Lazy compilation no longer needs context chain.

src/objects.cc

 // Copyright 2015 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.
 
 #include "src/objects.h"
 
 #include <cmath>
 #include <iomanip>
 #include <memory>
 #include <sstream>
@@ skipping 13733 matching lines @@
   shared_info->set_length(lit->scope()->arity());
   shared_info->set_internal_formal_parameter_count(lit->parameter_count());
   shared_info->set_function_token_position(lit->function_token_position());
   shared_info->set_start_position(lit->start_position());
   shared_info->set_end_position(lit->end_position());
   shared_info->set_is_declaration(lit->is_declaration());
   shared_info->set_is_named_expression(lit->is_named_expression());
   shared_info->set_is_anonymous_expression(lit->is_anonymous_expression());
   shared_info->set_inferred_name(*lit->inferred_name());
   shared_info->set_allows_lazy_compilation(lit->AllowsLazyCompilation());
   shared_info->set_allows_lazy_compilation_without_context(

[jochen (gone - plz use gerrit), 2016/10/06 13:58:48]

why not remove allows_lazy_compilation_without_context from SFI?

[Michael Starzinger, 2016/10/06 14:03:27]

I am working on a follow-up CL doing that as we speak. There is one remaining
case that disables lazy compilation without context for top-level eval code. It
is triggered here:

https://cs.chromium.org/chromium/src/v8/src/compiler.cc?q=set_allows_lazy_com...

I can merge that work into this CL if you prefer or leave it as a separate CL.
Your call.

-      lit->AllowsLazyCompilationWithoutContext());
+      lit->AllowsLazyCompilation());
   shared_info->set_language_mode(lit->language_mode());
   shared_info->set_uses_arguments(lit->scope()->arguments() != NULL);
   shared_info->set_has_duplicate_parameters(lit->has_duplicate_parameters());
   shared_info->set_is_function(lit->is_function());
   shared_info->set_never_compiled(true);
   shared_info->set_kind(lit->kind());
   if (!IsConstructable(lit->kind(), lit->language_mode())) {
     shared_info->SetConstructStub(
         *shared_info->GetIsolate()->builtins()->ConstructedNonConstructable());
   }
@@ skipping 6167 matching lines @@
   }
 
   // Evaluation of module body.
   Handle<JSFunction> resume(
       isolate->native_context()->generator_next_internal(), isolate);
   return Execution::Call(isolate, resume, generator, 0, nullptr);
 }
 
 }  // namespace internal
 }  // namespace v8