[es6] Reintroduce the instanceof operator in the backends.

test/unittests/compiler/js-intrinsic-lowering-unittest.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/compiler/access-builder.h"
 #include "src/compiler/diamond.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/js-intrinsic-lowering.h"
 #include "src/compiler/js-operator.h"
 #include "test/unittests/compiler/graph-unittest.h"
@@ skipping 266 matching lines @@
                                                 effect, CaptureEq(&if_false0)),
                                     effect, _),
                                 IsInt32Constant(JS_VALUE_TYPE)),
                             CaptureEq(&if_false0)))))),
           IsMerge(
               IsIfTrue(AllOf(CaptureEq(&branch0),
                              IsBranch(IsObjectIsSmi(input), control))),
               AllOf(CaptureEq(&if_false0), IsIfFalse(CaptureEq(&branch0))))));
 }
 
-// -----------------------------------------------------------------------------
-// %_GetOrdinaryHasInstance
-
-TEST_F(JSIntrinsicLoweringTest, InlineGetOrdinaryHasInstance) {
-  Node* const context = Parameter(0);
-  Node* const effect = graph()->start();
-  Node* const control = graph()->start();
-  Reduction const r = Reduce(graph()->NewNode(
-      javascript()->CallRuntime(Runtime::kInlineGetOrdinaryHasInstance, 0),
-      context, effect, control));
-  ASSERT_TRUE(r.Changed());
-  EXPECT_THAT(
-      r.replacement(),
-      IsLoadContext(
-          ContextAccess(0, Context::ORDINARY_HAS_INSTANCE_INDEX, true), _));
-}
-
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8