Revert of [runtime] Remove useless IN builtin.

src/hydrogen.cc

 // Copyright 2013 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/hydrogen.h"
 
 #include <sstream>
 
 #include "src/v8.h"
 
@@ skipping 11342 matching lines @@
       Handle<JSFunction> target = Handle<JSFunction>::cast(function);
       HInstanceOfKnownGlobal* result =
           New<HInstanceOfKnownGlobal>(left, target);
       return ast_context()->ReturnInstruction(result, expr->id());
     }
 
     HInstanceOf* result = New<HInstanceOf>(left, right);
     return ast_context()->ReturnInstruction(result, expr->id());
 
   } else if (op == Token::IN) {
+    HValue* function = AddLoadJSBuiltin(Builtins::IN);
     Add<HPushArguments>(left, right);
-    HInstruction* result =
-        New<HCallRuntime>(isolate()->factory()->empty_string(),
-                          Runtime::FunctionForId(Runtime::kHasProperty), 2);
+    // TODO(olivf) InvokeFunction produces a check for the parameter count,
+    // even though we are certain to pass the correct number of arguments here.
+    HInstruction* result = New<HInvokeFunction>(function, 2);
     return ast_context()->ReturnInstruction(result, expr->id());
   }
 
   PushBeforeSimulateBehavior push_behavior =
     ast_context()->IsEffect() ? NO_PUSH_BEFORE_SIMULATE
                               : PUSH_BEFORE_SIMULATE;
   HControlInstruction* compare = BuildCompareInstruction(
       op, left, right, left_type, right_type, combined_type,
       ScriptPositionToSourcePosition(expr->left()->position()),
       ScriptPositionToSourcePosition(expr->right()->position()),
@@ skipping 2059 matching lines @@
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 }  // namespace internal
 }  // namespace v8