[turbofan] Fix tail call optimization.

test/unittests/compiler/node-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/node.h"
 #include "src/compiler/operator.h"
 #include "test/unittests/test-utils.h"
 #include "testing/gmock-support.h"
 
 using testing::ElementsAre;
@@ skipping 104 matching lines @@
   EXPECT_FALSE(n1->OwnedBy(n1));
   EXPECT_TRUE(n0->OwnedBy(n1));
   Node* n0_n1[] = {n0, n1};
   Node* n2 = Node::New(zone(), 2, &kOp2, 2, n0_n1, false);
   EXPECT_FALSE(n0->OwnedBy(n0));
   EXPECT_FALSE(n1->OwnedBy(n1));
   EXPECT_FALSE(n2->OwnedBy(n2));
   EXPECT_FALSE(n0->OwnedBy(n1));
   EXPECT_FALSE(n0->OwnedBy(n2));
   EXPECT_TRUE(n1->OwnedBy(n2));
+  EXPECT_TRUE(n0->OwnedBy(n1, n2));
   n2->ReplaceInput(0, n2);
   EXPECT_TRUE(n0->OwnedBy(n1));
   EXPECT_TRUE(n1->OwnedBy(n2));
   n2->ReplaceInput(1, n0);
   EXPECT_FALSE(n0->OwnedBy(n1));
   EXPECT_FALSE(n1->OwnedBy(n2));
 }
 
 
 TEST_F(NodeTest, ReplaceUsesNone) {
@@ skipping 26 matching lines @@
   EXPECT_THAT(node->inputs(), ElementsAre(n0, n1, n0));
   node->AppendInput(zone(), n0);
   EXPECT_THAT(node->inputs(), ElementsAre(n0, n1, n0, n0));
   node->AppendInput(zone(), n1);
   EXPECT_THAT(node->inputs(), ElementsAre(n0, n1, n0, n0, n1));
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8