Revert of Separate Scope into DeclarationScope and Scope

src/full-codegen/mips/full-codegen-mips.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.
 
 #if V8_TARGET_ARCH_MIPS
 
 // Note on Mips implementation:
 //
 // The result_register() for mips is the 'v0' register, which is defined
 // by the ABI to contain function return values. However, the first
@@ skipping 194 matching lines @@
     }
     function_in_register_a1 = false;
     // Context is returned in v0. It replaces the context passed to us.
     // It's saved in the stack and kept live in cp.
     __ mov(cp, v0);
     __ sw(v0, MemOperand(fp, StandardFrameConstants::kContextOffset));
     // Copy any necessary parameters into the context.
     int num_parameters = info->scope()->num_parameters();
     int first_parameter = info->scope()->has_this_declaration() ? -1 : 0;
     for (int i = first_parameter; i < num_parameters; i++) {
-      Variable* var =
-          (i == -1) ? info->scope()->receiver() : info->scope()->parameter(i);
+      Variable* var = (i == -1) ? scope()->receiver() : scope()->parameter(i);
       if (var->IsContextSlot()) {
         int parameter_offset = StandardFrameConstants::kCallerSPOffset +
                                  (num_parameters - 1 - i) * kPointerSize;
         // Load parameter from stack.
         __ lw(a0, MemOperand(fp, parameter_offset));
         // Store it in the context.
         MemOperand target = ContextMemOperand(cp, var->index());
         __ sw(a0, target);
 
         // Update the write barrier.
@@ skipping 11 matching lines @@
   }
 
   // Register holding this function and new target are both trashed in case we
   // bailout here. But since that can happen only when new target is not used
   // and we allocate a context, the value of |function_in_register| is correct.
   PrepareForBailoutForId(BailoutId::FunctionContext(),
                          BailoutState::NO_REGISTERS);
 
   // Possibly set up a local binding to the this function which is used in
   // derived constructors with super calls.
-  Variable* this_function_var = info->scope()->this_function_var();
+  Variable* this_function_var = scope()->this_function_var();
   if (this_function_var != nullptr) {
     Comment cmnt(masm_, "[ This function");
     if (!function_in_register_a1) {
       __ lw(a1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
       // The write barrier clobbers register again, keep it marked as such.
     }
     SetVar(this_function_var, a1, a0, a2);
   }
 
   // Possibly set up a local binding to the new target value.
-  Variable* new_target_var = info->scope()->new_target_var();
+  Variable* new_target_var = scope()->new_target_var();
   if (new_target_var != nullptr) {
     Comment cmnt(masm_, "[ new.target");
     SetVar(new_target_var, a3, a0, a2);
   }
 
   // Possibly allocate RestParameters
   int rest_index;
-  Variable* rest_param = info->scope()->rest_parameter(&rest_index);
+  Variable* rest_param = scope()->rest_parameter(&rest_index);
   if (rest_param) {
     Comment cmnt(masm_, "[ Allocate rest parameter array");
     if (!function_in_register_a1) {
       __ lw(a1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
     }
     FastNewRestParameterStub stub(isolate());
     __ CallStub(&stub);
     function_in_register_a1 = false;
     SetVar(rest_param, v0, a1, a2);
   }
 
-  Variable* arguments = info->scope()->arguments();
+  Variable* arguments = scope()->arguments();
   if (arguments != NULL) {
     // Function uses arguments object.
     Comment cmnt(masm_, "[ Allocate arguments object");
     if (!function_in_register_a1) {
       // Load this again, if it's used by the local context below.
       __ lw(a1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
     }
     if (is_strict(language_mode()) || !has_simple_parameters()) {
       FastNewStrictArgumentsStub stub(isolate());
       __ CallStub(&stub);
@@ skipping 3334 matching lines @@
   __ sw(value, MemOperand(fp, frame_offset));
 }
 
 
 void FullCodeGenerator::LoadContextField(Register dst, int context_index) {
   __ lw(dst, ContextMemOperand(cp, context_index));
 }
 
 
 void FullCodeGenerator::PushFunctionArgumentForContextAllocation() {
-  DeclarationScope* closure_scope = scope()->GetClosureScope();
+  Scope* closure_scope = scope()->ClosureScope();
   if (closure_scope->is_script_scope() ||
       closure_scope->is_module_scope()) {
     // Contexts nested in the native context have a canonical empty function
     // as their closure, not the anonymous closure containing the global
     // code.
     __ LoadNativeContextSlot(Context::CLOSURE_INDEX, at);
   } else if (closure_scope->is_eval_scope()) {
     // Contexts created by a call to eval have the same closure as the
     // context calling eval, not the anonymous closure containing the eval
     // code.  Fetch it from the context.
@@ skipping 141 matching lines @@
          reinterpret_cast<uint32_t>(
              isolate->builtins()->OnStackReplacement()->entry()));
   return ON_STACK_REPLACEMENT;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS