[turbofan] Add a Simplified::CheckMaps instruction.

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 e6201ec67f8e6f627827b98b56e125200b67cfee..f63f49b0915baa0b366b296665d68609c31e7f79 100644
--- a/test/unittests/compiler/node-test-utils.cc
+++ b/test/unittests/compiler/node-test-utils.cc
@@ -1415,6 +1415,53 @@ Matcher<Node*> IsReturn(const Matcher<Node*>& value_matcher,
 }
 
 
+class IsDeoptimizeMatcher final : public NodeMatcher {
+ public:
+  IsDeoptimizeMatcher(const Matcher<Node*>& frame_state_matcher,
+                      const Matcher<Node*>& effect_matcher,
+                      const Matcher<Node*>& control_matcher)
+      : NodeMatcher(IrOpcode::kDeoptimize),
+        frame_state_matcher_(frame_state_matcher),
+        effect_matcher_(effect_matcher),
+        control_matcher_(control_matcher) {}
+
+  void DescribeTo(std::ostream* os) const final {
+    NodeMatcher::DescribeTo(os);
+    *os << " whose frame_state (";
+    frame_state_matcher_.DescribeTo(os);
+    *os << ") and effect (";
+    effect_matcher_.DescribeTo(os);
+    *os << ") and control (";
+    control_matcher_.DescribeTo(os);
+    *os << ")";
+  }
+
+  bool MatchAndExplain(Node* node, MatchResultListener* listener) const final {
+    return (NodeMatcher::MatchAndExplain(node, listener) &&
+            PrintMatchAndExplain(NodeProperties::GetValueInput(node, 0),
+                                 "frame_state", frame_state_matcher_,
+                                 listener) &&
+            PrintMatchAndExplain(NodeProperties::GetEffectInput(node), "effect",
+                                 effect_matcher_, listener) &&
+            PrintMatchAndExplain(NodeProperties::GetControlInput(node),
+                                 "control", control_matcher_, listener));
+  }
+
+ private:
+  const Matcher<Node*> frame_state_matcher_;
+  const Matcher<Node*> effect_matcher_;
+  const Matcher<Node*> control_matcher_;
+};
+
+
+Matcher<Node*> IsDeoptimize(const Matcher<Node*>& frame_state_matcher,
+                            const Matcher<Node*>& effect_matcher,
+                            const Matcher<Node*>& control_matcher) {
+  return MakeMatcher(new IsDeoptimizeMatcher(frame_state_matcher,
+                                             effect_matcher, control_matcher));
+}
+
+
 Matcher<Node*> IsTerminate(const Matcher<Node*>& effect_matcher,
                            const Matcher<Node*>& control_matcher) {
   return MakeMatcher(new IsTerminateMatcher(effect_matcher, control_matcher));