[ignition] Add bytecodes for loads/stores in the current context

src/interpreter/bytecode-array-builder.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/interpreter/bytecode-array-builder.h"
 
 #include "src/globals.h"
 #include "src/interpreter/bytecode-array-writer.h"
 #include "src/interpreter/bytecode-dead-code-optimizer.h"
 #include "src/interpreter/bytecode-label.h"
@@ skipping 443 matching lines @@
   } else {
     DCHECK_EQ(language_mode, STRICT);
     OutputStaGlobalStrict(name_index, feedback_slot);
   }
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::LoadContextSlot(Register context,
                                                             int slot_index,
                                                             int depth) {
-  OutputLdaContextSlot(context, slot_index, depth);
+  if (context.is_current_context() && depth == 0) {
+    OutputLdaCurrentContextSlot(slot_index);
+  } else {
+    OutputLdaContextSlot(context, slot_index, depth);
+  }
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::StoreContextSlot(Register context,
                                                              int slot_index,
                                                              int depth) {
-  OutputStaContextSlot(context, slot_index, depth);
+  if (context.is_current_context() && depth == 0) {
+    OutputStaCurrentContextSlot(slot_index);
+  } else {
+    OutputStaContextSlot(context, slot_index, depth);
+  }
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::LoadLookupSlot(
     const Handle<String> name, TypeofMode typeof_mode) {
   size_t name_index = GetConstantPoolEntry(name);
   if (typeof_mode == INSIDE_TYPEOF) {
     OutputLdaLookupSlotInsideTypeof(name_index);
   } else {
     DCHECK_EQ(typeof_mode, NOT_INSIDE_TYPEOF);
@@ skipping 503 matching lines @@
     RegisterList reg_list) {
   DCHECK(RegisterListIsValid(reg_list));
   if (register_optimizer_)
     register_optimizer_->PrepareOutputRegisterList(reg_list);
   return static_cast<uint32_t>(reg_list.first_register().ToOperand());
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8