Revert of [runtime] Remove useless IN builtin.

src/full-codegen/mips64/full-codegen-mips64.cc

 // Copyright 2012 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.
 
 #if V8_TARGET_ARCH_MIPS64
 
 // Note on Mips implementation:
 //
 // The result_register() for mips is the 'v0' register, which is defined
 // by the ABI to contain function return values. However, the first
@@ skipping 3322 matching lines @@
   Label* fall_through = NULL;
   context()->PrepareTest(&materialize_true, &materialize_false,
                          &if_true, &if_false, &fall_through);
 
   PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
   __ SmiTst(v0, a4);
   Split(eq, a4, Operand(zero_reg), if_true, if_false, fall_through);
 
   context()->Plug(if_true, if_false);
 }
+
+
+void FullCodeGenerator::EmitIsNonNegativeSmi(CallRuntime* expr) {
+  ZoneList<Expression*>* args = expr->arguments();
+  DCHECK(args->length() == 1);
+
+  VisitForAccumulatorValue(args->at(0));
+
+  Label materialize_true, materialize_false;
+  Label* if_true = NULL;
+  Label* if_false = NULL;
+  Label* fall_through = NULL;
+  context()->PrepareTest(&materialize_true, &materialize_false,
+                         &if_true, &if_false, &fall_through);
+
+  PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
+  __ NonNegativeSmiTst(v0, at);
+  Split(eq, at, Operand(zero_reg), if_true, if_false, fall_through);
+
+  context()->Plug(if_true, if_false);
+}
 
 
 void FullCodeGenerator::EmitIsObject(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 1);
 
   VisitForAccumulatorValue(args->at(0));
 
   Label materialize_true, materialize_false;
   Label* if_true = NULL;
@@ skipping 1732 matching lines @@
   Label* if_false = NULL;
   Label* fall_through = NULL;
   context()->PrepareTest(&materialize_true, &materialize_false,
                          &if_true, &if_false, &fall_through);
 
   Token::Value op = expr->op();
   VisitForStackValue(expr->left());
   switch (op) {
     case Token::IN:
       VisitForStackValue(expr->right());
-      __ CallRuntime(Runtime::kHasProperty, 2);
+      __ InvokeBuiltin(Builtins::IN, CALL_FUNCTION);
       PrepareForBailoutBeforeSplit(expr, false, NULL, NULL);
       __ LoadRoot(a4, Heap::kTrueValueRootIndex);
       Split(eq, v0, Operand(a4), if_true, if_false, fall_through);
       break;
 
     case Token::INSTANCEOF: {
       VisitForStackValue(expr->right());
       InstanceofStub stub(isolate(), InstanceofStub::kNoFlags);
       __ CallStub(&stub);
       PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
@@ skipping 255 matching lines @@
          reinterpret_cast<uint64_t>(
              isolate->builtins()->OsrAfterStackCheck()->entry()));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS64