[turbofan] Ensure that NTLs are always properly connected to the end.

test/unittests/compiler/node-test-utils.cc

Index: test/unittests/compiler/node-test-utils.cc
diff --git a/test/unittests/compiler/node-test-utils.cc b/test/unittests/compiler/node-test-utils.cc
index 18b072909130a1f4456a609095b789b5199589a5..a35e5d1bc77d7103ed9cb56d5b717dce959e1b3a 100644
--- a/test/unittests/compiler/node-test-utils.cc
+++ b/test/unittests/compiler/node-test-utils.cc
@@ -462,6 +462,37 @@ class IsEffectPhiMatcher FINAL : public NodeMatcher {
 };
 
 
+class IsEffectSetMatcher FINAL : public NodeMatcher {
+ public:
+  IsEffectSetMatcher(const Matcher<Node*>& effect0_matcher,
+                     const Matcher<Node*>& effect1_matcher)
+      : NodeMatcher(IrOpcode::kEffectSet),
+        effect0_matcher_(effect0_matcher),
+        effect1_matcher_(effect1_matcher) {}
+
+  void DescribeTo(std::ostream* os) const FINAL {
+    NodeMatcher::DescribeTo(os);
+    *os << "), effect0 (";
+    effect0_matcher_.DescribeTo(os);
+    *os << ") and effect1 (";
+    effect1_matcher_.DescribeTo(os);
+    *os << ")";
+  }
+
+  bool MatchAndExplain(Node* node, MatchResultListener* listener) const FINAL {
+    return (NodeMatcher::MatchAndExplain(node, listener) &&
+            PrintMatchAndExplain(NodeProperties::GetEffectInput(node, 0),
+                                 "effect0", effect0_matcher_, listener) &&
+            PrintMatchAndExplain(NodeProperties::GetEffectInput(node, 1),
+                                 "effect1", effect1_matcher_, listener));
+  }
+
+ private:
+  const Matcher<Node*> effect0_matcher_;
+  const Matcher<Node*> effect1_matcher_;
+};
+
+
 class IsProjectionMatcher FINAL : public NodeMatcher {
  public:
   IsProjectionMatcher(const Matcher<size_t>& index_matcher,
@@ -1148,6 +1179,17 @@ class IsUnopMatcher FINAL : public NodeMatcher {
  private:
   const Matcher<Node*> input_matcher_;
 };
+
+}  // namespace
+
+
+Matcher<Node*> IsAlways() {
+  return MakeMatcher(new NodeMatcher(IrOpcode::kAlways));
+}
+
+
+Matcher<Node*> IsEnd(const Matcher<Node*>& control_matcher) {
+  return MakeMatcher(new IsControl1Matcher(IrOpcode::kEnd, control_matcher));
 }
 
 
@@ -1290,6 +1332,12 @@ Matcher<Node*> IsEffectPhi(const Matcher<Node*>& effect0_matcher,
 }
 
 
+Matcher<Node*> IsEffectSet(const Matcher<Node*>& effect0_matcher,
+                           const Matcher<Node*>& effect1_matcher) {
+  return MakeMatcher(new IsEffectSetMatcher(effect0_matcher, effect1_matcher));
+}
+
+
 Matcher<Node*> IsProjection(const Matcher<size_t>& index_matcher,
                             const Matcher<Node*>& base_matcher) {
   return MakeMatcher(new IsProjectionMatcher(index_matcher, base_matcher));