[turbofan] Check node input/use consistency for changed operators and new nodes.

test/unittests/compiler/control-equivalence-unittest.cc

Index: test/unittests/compiler/control-equivalence-unittest.cc
diff --git a/test/unittests/compiler/control-equivalence-unittest.cc b/test/unittests/compiler/control-equivalence-unittest.cc
index 47be5407f720cd0d209973dc6239d3c6c639b22e..caed2e5bd5c76258d58bb7ca533b08af1a3d6d17 100644
--- a/test/unittests/compiler/control-equivalence-unittest.cc
+++ b/test/unittests/compiler/control-equivalence-unittest.cc
@@ -105,15 +105,6 @@ TEST_F(ControlEquivalenceTest, Empty1) {
 }
 
 
-TEST_F(ControlEquivalenceTest, Empty2) {
-  Node* start = graph()->start();
-  Node* end = End(start);

[Michael Starzinger, 2015/09/25 08:06:49]

Removing this is fine with me. If you want to preserve it I suggest to introduce
a {Merge1} helper and build a single-linked chain "Start->Merge->End" instead of
the borked "Start->End->End" here.

[Jarin, 2015/09/25 08:13:33]

Done.

-  ComputeEquivalence(end);
-
-  ASSERT_EQUIVALENCE(start, end);
-}
-
-
 TEST_F(ControlEquivalenceTest, Diamond1) {
   Node* start = graph()->start();
   Node* b = Branch(start);