Scope cleanup: remove unused bits and accessors

src/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/scopes.h"
 
 #include "src/accessors.h"
 #include "src/bootstrapper.h"
 #include "src/messages.h"
 #include "src/parser.h"
@@ skipping 176 matching lines @@
   scope_contains_with_ = false;
   scope_calls_eval_ = false;
   scope_uses_arguments_ = false;
   scope_uses_super_property_ = false;
   asm_module_ = false;
   asm_function_ = outer_scope != NULL && outer_scope->asm_module_;
   // Inherit the language mode from the parent scope.
   language_mode_ = outer_scope != NULL ? outer_scope->language_mode_ : SLOPPY;
   outer_scope_calls_sloppy_eval_ = false;
   inner_scope_calls_eval_ = false;
-  inner_scope_uses_arguments_ = false;
   scope_nonlinear_ = false;
   force_eager_compilation_ = false;
   force_context_allocation_ = (outer_scope != NULL && !is_function_scope())
       ? outer_scope->has_forced_context_allocation() : false;
   num_var_or_const_ = 0;
   num_stack_slots_ = 0;
   num_heap_slots_ = 0;
   num_global_slots_ = 0;
   num_modules_ = 0;
   module_var_ = NULL;
@@ skipping 783 matching lines @@
     Indent(n1, "// strong mode scope\n");
   } else if (is_strict(language_mode())) {
     Indent(n1, "// strict mode scope\n");
   }
   if (scope_inside_with_) Indent(n1, "// scope inside 'with'\n");
   if (scope_contains_with_) Indent(n1, "// scope contains 'with'\n");
   if (scope_calls_eval_) Indent(n1, "// scope calls 'eval'\n");
   if (scope_uses_arguments_) Indent(n1, "// scope uses 'arguments'\n");
   if (scope_uses_super_property_)
     Indent(n1, "// scope uses 'super' property\n");
-  if (inner_scope_uses_arguments_) {
-    Indent(n1, "// inner scope uses 'arguments'\n");
-  }
   if (outer_scope_calls_sloppy_eval_) {
     Indent(n1, "// outer scope calls 'eval' in sloppy context\n");
   }
   if (inner_scope_calls_eval_) Indent(n1, "// inner scope calls 'eval'\n");
   if (num_stack_slots_ > 0) {
     Indent(n1, "// ");
     PrintF("%d stack slots\n", num_stack_slots_);
   }
   if (num_heap_slots_ > 0) {
     Indent(n1, "// ");
@@ skipping 326 matching lines @@
   }
 
   bool calls_sloppy_eval =
       this->calls_sloppy_eval() || outer_scope_calls_sloppy_eval_;
   for (int i = 0; i < inner_scopes_.length(); i++) {
     Scope* inner = inner_scopes_[i];
     inner->PropagateScopeInfo(calls_sloppy_eval);
     if (inner->scope_calls_eval_ || inner->inner_scope_calls_eval_) {
       inner_scope_calls_eval_ = true;
     }
-    // If the inner scope is an arrow function, propagate the flags tracking
-    // usage of arguments/super/this, but do not propagate them out from normal
-    // functions.
-    if (!inner->is_function_scope() || inner->is_arrow_scope()) {
-      if (inner->scope_uses_arguments_ || inner->inner_scope_uses_arguments_) {
-        inner_scope_uses_arguments_ = true;
-      }
-    }
     if (inner->force_eager_compilation_) {
       force_eager_compilation_ = true;
     }
     if (asm_module_ && inner->scope_type() == FUNCTION_SCOPE) {
       inner->asm_function_ = true;
     }
   }
 }
 
 
@@ skipping 296 matching lines @@
       function_ != NULL && function_->proxy()->var()->IsContextSlot();
   return num_heap_slots() - Context::MIN_CONTEXT_SLOTS - num_global_slots() -
          (is_function_var_in_context ? 1 : 0);
 }
 
 
 int Scope::ContextGlobalCount() const { return num_global_slots(); }
 
 }  // namespace internal
 }  // namespace v8