[Interpreter] Add wide context slot load / store operations.

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"
 
 namespace v8 {
 namespace internal {
 namespace interpreter {
 
@@ skipping 413 matching lines @@
   return *this;
 }
 
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::LoadContextSlot(Register context,
                                                             int slot_index) {
   DCHECK(slot_index >= 0);
   if (FitsInIdx8Operand(slot_index)) {
     Output(Bytecode::kLdaContextSlot, context.ToOperand(),
            static_cast<uint8_t>(slot_index));
+  } else if (FitsInIdx16Operand(slot_index)) {
+    Output(Bytecode::kLdaContextSlotWide, context.ToOperand(),
+           static_cast<uint16_t>(slot_index));
   } else {
     UNIMPLEMENTED();
   }
   return *this;
 }
 
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::StoreContextSlot(Register context,
                                                              int slot_index) {
   DCHECK(slot_index >= 0);
   if (FitsInIdx8Operand(slot_index)) {
     Output(Bytecode::kStaContextSlot, context.ToOperand(),
            static_cast<uint8_t>(slot_index));
+  } else if (FitsInIdx16Operand(slot_index)) {
+    Output(Bytecode::kStaContextSlotWide, context.ToOperand(),
+           static_cast<uint16_t>(slot_index));
   } else {
     UNIMPLEMENTED();
   }
   return *this;
 }
 
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::LoadLookupSlot(
     const Handle<String> name, TypeofMode typeof_mode) {
   Bytecode bytecode = (typeof_mode == INSIDE_TYPEOF)
@@ skipping 1206 matching lines @@
   DCHECK_GT(next_consecutive_count_, 0);
   builder_->BorrowConsecutiveTemporaryRegister(next_consecutive_register_);
   allocated_.push_back(next_consecutive_register_);
   next_consecutive_count_--;
   return Register(next_consecutive_register_++);
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8