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

test/unittests/interpreter/bytecode-array-builder-unittest.cc

 // Copyright 2014 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/v8.h"
 
 #include "src/interpreter/bytecode-array-builder.h"
 #include "src/interpreter/bytecode-array-iterator.h"
 #include "test/unittests/test-utils.h"
 
@@ skipping 215 matching lines @@
   // Emit wide load / store property operations.
   builder.LoadNamedProperty(reg, wide_name, 0, LanguageMode::SLOPPY)
       .LoadKeyedProperty(reg, 2056, LanguageMode::SLOPPY)
       .StoreNamedProperty(reg, wide_name, 0, LanguageMode::SLOPPY)
       .StoreKeyedProperty(reg, reg, 2056, LanguageMode::SLOPPY)
       .LoadNamedProperty(reg, wide_name, 0, LanguageMode::STRICT)
       .LoadKeyedProperty(reg, 2056, LanguageMode::STRICT)
       .StoreNamedProperty(reg, wide_name, 0, LanguageMode::STRICT)
       .StoreKeyedProperty(reg, reg, 2056, LanguageMode::STRICT);
 
+  // Emit wide load / store lookup slots.
+  builder.LoadLookupSlot(wide_name, TypeofMode::NOT_INSIDE_TYPEOF)
+      .LoadLookupSlot(wide_name, TypeofMode::INSIDE_TYPEOF)
+      .StoreLookupSlot(wide_name, LanguageMode::SLOPPY)
+      .StoreLookupSlot(wide_name, LanguageMode::STRICT);
+
   // CreateClosureWide
   Handle<SharedFunctionInfo> shared_info2 = factory->NewSharedFunctionInfo(
       factory->NewStringFromStaticChars("function_b"), MaybeHandle<Code>(),
       false);
   builder.CreateClosure(shared_info2, NOT_TENURED);
 
   // Emit wide variant of literal creation operations.
   builder.CreateRegExpLiteral(factory->NewStringFromStaticChars("wide_literal"),
                               0, 0)
       .CreateArrayLiteral(factory->NewFixedArray(2), 0, 0)
@@ skipping 428 matching lines @@
     iterator.Advance();
   }
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kReturn);
   iterator.Advance();
   CHECK(iterator.done());
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8