Only create ScopeInfos for eagerly parsed scopes.

src/ast/scopes.cc

 // Copyright 2012 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/ast/scopes.h"
 
 #include <set>
 
 #include "src/accessors.h"
 #include "src/ast/ast.h"
@@ skipping 97 matching lines @@
       variables_(zone),
       locals_(4, zone),
       decls_(4, zone),
       scope_type_(scope_type) {
   DCHECK_NE(SCRIPT_SCOPE, scope_type);
   SetDefaults();
   set_language_mode(outer_scope->language_mode());
   force_context_allocation_ =
       !is_function_scope() && outer_scope->has_forced_context_allocation();
   outer_scope_->AddInnerScope(this);
+  if (outer_scope_->is_lazily_parsed_) is_lazily_parsed_ = true;
 }
 
 Scope::Snapshot::Snapshot(Scope* scope)
     : outer_scope_(scope),
       top_inner_scope_(scope->inner_scope_),
       top_unresolved_(scope->unresolved_),
       top_local_(scope->GetClosureScope()->locals_.length()),
       top_decl_(scope->GetClosureScope()->decls_.length()) {}
 
 DeclarationScope::DeclarationScope(Zone* zone,
@@ skipping 147 matching lines @@
 
   scope_calls_eval_ = false;
   scope_nonlinear_ = false;
   is_hidden_ = false;
   is_debug_evaluate_scope_ = false;
 
   inner_scope_calls_eval_ = false;
   force_context_allocation_ = false;
 
   is_declaration_scope_ = false;
+
+  is_lazily_parsed_ = false;
 }
 
 bool Scope::HasSimpleParameters() {
   DeclarationScope* scope = GetClosureScope();
   return !scope->is_function_scope() || scope->has_simple_parameters();
 }
 
 void DeclarationScope::set_asm_module() {
   asm_module_ = true;
   // Mark any existing inner function scopes as asm function scopes.
@@ skipping 865 matching lines @@
     DCHECK(!proxy->is_resolved());
     VariableProxy* copy = ast_node_factory->CopyVariableProxy(proxy);
     migrate_to->AddUnresolved(copy);
   }
 
   // Push scope data up to migrate_to. Note that migrate_to and this Scope
   // describe the same Scope, just in different Zones.
   PropagateUsageFlagsToScope(migrate_to);
   if (scope_uses_super_property_) migrate_to->scope_uses_super_property_ = true;
   if (inner_scope_calls_eval_) migrate_to->inner_scope_calls_eval_ = true;
+  if (is_lazily_parsed_) migrate_to->is_lazily_parsed_ = true;
   DCHECK(!force_eager_compilation_);
   migrate_to->set_start_position(start_position_);
   migrate_to->set_end_position(end_position_);
   migrate_to->set_language_mode(language_mode());
   migrate_to->arity_ = arity_;
   migrate_to->force_context_allocation_ = force_context_allocation_;
   outer_scope_->RemoveInnerScope(this);
   DCHECK_EQ(outer_scope_, migrate_to->outer_scope_);
   DCHECK_EQ(outer_scope_->zone(), migrate_to->zone());
   DCHECK_EQ(NeedsHomeObject(), migrate_to->NeedsHomeObject());
@@ skipping 141 matching lines @@
   if (is_strict(language_mode())) {
     Indent(n1, "// strict mode scope\n");
   }
   if (IsAsmModule()) Indent(n1, "// scope is an asm module\n");
   if (IsAsmFunction()) Indent(n1, "// scope is an asm function\n");
   if (scope_calls_eval_) Indent(n1, "// scope calls 'eval'\n");
   if (is_declaration_scope() && AsDeclarationScope()->uses_super_property()) {
     Indent(n1, "// scope uses 'super' property\n");
   }
   if (inner_scope_calls_eval_) Indent(n1, "// inner scope calls 'eval'\n");
+  if (is_lazily_parsed_) Indent(n1, "// lazily parsed\n");
   if (num_stack_slots_ > 0) {
     Indent(n1, "// ");
     PrintF("%d stack slots\n", num_stack_slots_);
   }
   if (num_heap_slots_ > 0) {
     Indent(n1, "// ");
     PrintF("%d heap slots\n", num_heap_slots_);
   }
 
   // Print locals.
@@ skipping 470 matching lines @@
   Variable* function =
       is_function_scope() ? AsDeclarationScope()->function_var() : nullptr;
   bool is_function_var_in_context =
       function != nullptr && function->IsContextSlot();
   return num_heap_slots() - Context::MIN_CONTEXT_SLOTS -
          (is_function_var_in_context ? 1 : 0);
 }
 
 }  // namespace internal
 }  // namespace v8