[Interpreter] Adds support for wide variant of load/store lookup slots.

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 434 matching lines @@
 
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::LoadLookupSlot(
     const Handle<String> name, TypeofMode typeof_mode) {
   Bytecode bytecode = (typeof_mode == INSIDE_TYPEOF)
                           ? Bytecode::kLdaLookupSlotInsideTypeof
                           : Bytecode::kLdaLookupSlot;
   size_t name_index = GetConstantPoolEntry(name);
   if (FitsInIdx8Operand(name_index)) {
     Output(bytecode, static_cast<uint8_t>(name_index));
+  } else if (FitsInIdx16Operand(name_index)) {
+    Output(BytecodeForWideOperands(bytecode),
+           static_cast<uint16_t>(name_index));
   } else {
     UNIMPLEMENTED();
   }
   return *this;
 }
 
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::StoreLookupSlot(
     const Handle<String> name, LanguageMode language_mode) {
   Bytecode bytecode = BytecodeForStoreLookupSlot(language_mode);
   size_t name_index = GetConstantPoolEntry(name);
   if (FitsInIdx8Operand(name_index)) {
     Output(bytecode, static_cast<uint8_t>(name_index));
+  } else if (FitsInIdx16Operand(name_index)) {
+    Output(BytecodeForWideOperands(bytecode),
+           static_cast<uint16_t>(name_index));
   } else {
     UNIMPLEMENTED();
   }
   return *this;
 }
 
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::LoadNamedProperty(
     Register object, const Handle<String> name, int feedback_slot,
     LanguageMode language_mode) {
@@ skipping 810 matching lines @@
     case Bytecode::kLdaGlobalStrict:
       return Bytecode::kLdaGlobalStrictWide;
     case Bytecode::kLdaGlobalInsideTypeofSloppy:
       return Bytecode::kLdaGlobalInsideTypeofSloppyWide;
     case Bytecode::kLdaGlobalInsideTypeofStrict:
       return Bytecode::kLdaGlobalInsideTypeofStrictWide;
     case Bytecode::kStaGlobalSloppy:
       return Bytecode::kStaGlobalSloppyWide;
     case Bytecode::kStaGlobalStrict:
       return Bytecode::kStaGlobalStrictWide;
+    case Bytecode::kLdaLookupSlot:
+      return Bytecode::kLdaLookupSlotWide;
+    case Bytecode::kLdaLookupSlotInsideTypeof:
+      return Bytecode::kLdaLookupSlotInsideTypeofWide;
+    case Bytecode::kStaLookupSlotStrict:
+      return Bytecode::kStaLookupSlotStrictWide;
+    case Bytecode::kStaLookupSlotSloppy:
+      return Bytecode::kStaLookupSlotSloppyWide;
     default:
       UNREACHABLE();
       return static_cast<Bytecode>(-1);
   }
 }
 
 
 // static
 Bytecode BytecodeArrayBuilder::BytecodeForLoadIC(LanguageMode language_mode) {
   switch (language_mode) {
@@ skipping 235 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