[turbofan] Add length operand to LoadElement and StoreElement.

test/cctest/compiler/test-node.cc

Index: test/cctest/compiler/test-node.cc
diff --git a/test/cctest/compiler/test-node.cc b/test/cctest/compiler/test-node.cc
index da10d250f92457974403b2955d26cd49abdfd89d..28d807e4a77ff93a1fca990ad38530793974aa6e 100644
--- a/test/cctest/compiler/test-node.cc
+++ b/test/cctest/compiler/test-node.cc
@@ -338,6 +338,27 @@ TEST(Inputs) {
 }
 
 
+TEST(RemoveInput) {
+  GraphTester graph;
+
+  Node* n0 = graph.NewNode(&dummy_operator);
+  Node* n1 = graph.NewNode(&dummy_operator, n0);
+  Node* n2 = graph.NewNode(&dummy_operator, n0, n1);
+
+  n1->RemoveInput(0);
+  CHECK_EQ(0, n1->InputCount());
+  CHECK_EQ(1, n0->UseCount());
+
+  n2->RemoveInput(0);
+  CHECK_EQ(1, n2->InputCount());
+  CHECK_EQ(0, n0->UseCount());
+  CHECK_EQ(1, n1->UseCount());
+
+  n2->RemoveInput(0);
+  CHECK_EQ(0, n2->InputCount());
+}
+
+
 TEST(AppendInputsAndIterator) {
   GraphTester graph;