[turbofan] Optimize strict equality of unique values.

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

 // Copyright 2014 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.
 
 #ifndef V8_UNITTESTS_COMPILER_NODE_TEST_UTILS_H_
 #define V8_UNITTESTS_COMPILER_NODE_TEST_UTILS_H_
 
 #include "src/compiler/machine-operator.h"
 #include "src/compiler/machine-type.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations.
 class ExternalReference;
 class HeapObject;
 template <class T>
 class Unique;
+template <class>
+class TypeImpl;
+struct ZoneTypeConfig;
+typedef TypeImpl<ZoneTypeConfig> Type;
 
 namespace compiler {
 
 // Forward declarations.
 class BufferAccess;
 class CallDescriptor;
 struct ElementAccess;
 struct FieldAccess;
 class Node;
 
@@ skipping 90 matching lines @@
     const Matcher<Node*>& value4_matcher, const Matcher<Node*>& value5_matcher,
     const Matcher<Node*>& value6_matcher, const Matcher<Node*>& effect_matcher,
     const Matcher<Node*>& control_matcher);
 Matcher<Node*> IsTailCall(
     const Matcher<CallDescriptor const*>& descriptor_matcher,
     const Matcher<Node*>& value0_matcher, const Matcher<Node*>& value1_matcher,
     const Matcher<Node*>& effect_matcher,
     const Matcher<Node*>& control_matcher);
 
 Matcher<Node*> IsBooleanNot(const Matcher<Node*>& value_matcher);
+Matcher<Node*> IsReferenceEqual(const Matcher<Type*>& type_matcher,
+                                const Matcher<Node*>& lhs_matcher,
+                                const Matcher<Node*>& rhs_matcher);
 Matcher<Node*> IsNumberEqual(const Matcher<Node*>& lhs_matcher,
                              const Matcher<Node*>& rhs_matcher);
 Matcher<Node*> IsNumberLessThan(const Matcher<Node*>& lhs_matcher,
                                 const Matcher<Node*>& rhs_matcher);
 Matcher<Node*> IsNumberSubtract(const Matcher<Node*>& lhs_matcher,
                                 const Matcher<Node*>& rhs_matcher);
 Matcher<Node*> IsNumberMultiply(const Matcher<Node*>& lhs_matcher,
                                 const Matcher<Node*>& rhs_matcher);
 Matcher<Node*> IsAllocate(const Matcher<Node*>& size_matcher,
                           const Matcher<Node*>& effect_matcher,
@@ skipping 118 matching lines @@
                           const Matcher<Node*>& effect_matcher,
                           const Matcher<Node*>& control_matcher);
 Matcher<Node*> IsNumberToInt32(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsNumberToUint32(const Matcher<Node*>& input_matcher);
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_UNITTESTS_COMPILER_NODE_TEST_UTILS_H_