[turbofan] Remove usage of Unique<T> from graph.

src/compiler/operator.h

 // Copyright 2013 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_COMPILER_OPERATOR_H_
 #define V8_COMPILER_OPERATOR_H_
 
 #include <ostream>  // NOLINT(readability/streams)
 
 #include "src/base/flags.h"
 #include "src/base/functional.h"
+#include "src/handles.h"
 #include "src/zone.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 // An operator represents description of the "computation" of a node in the
 // compiler IR. A computation takes values (i.e. data) as input and produces
 // zero or more values as output. The side-effects of a computation must be
 // captured by additional control and data dependencies which are part of the
@@ skipping 126 matching lines @@
       : Operator(opcode, properties, mnemonic, value_in, effect_in, control_in,
                  value_out, effect_out, control_out),
         parameter_(parameter),
         pred_(pred),
         hash_(hash) {}
 
   T const& parameter() const { return parameter_; }
 
   bool Equals(const Operator* other) const final {
     if (opcode() != other->opcode()) return false;
-    const Operator1<T>* that = reinterpret_cast<const Operator1<T>*>(other);
+    const Operator1<T, Pred, Hash>* that =
+        reinterpret_cast<const Operator1<T, Pred, Hash>*>(other);
     return this->pred_(this->parameter(), that->parameter());
   }
   size_t HashCode() const final {
     return base::hash_combine(this->opcode(), this->hash_(this->parameter()));
   }
   virtual void PrintParameter(std::ostream& os) const {
     os << "[" << this->parameter() << "]";
   }
 
  protected:
   void PrintTo(std::ostream& os) const final {
     os << mnemonic();
     PrintParameter(os);
   }
 
  private:
   T const parameter_;
   Pred const pred_;
   Hash const hash_;
 };
 
 
 // Helper to extract parameters from Operator1<*> operator.
 template <typename T>
 inline T const& OpParameter(const Operator* op) {
   return reinterpret_cast<const Operator1<T>*>(op)->parameter();
 }
 
 // NOTE: We have to be careful to use the right equal/hash functions below, for
-// float/double we always use the ones operating on the bit level.
+// float/double we always use the ones operating on the bit level, for Handle<>
+// we always use the ones operating on the location level.
 template <>
 inline float const& OpParameter(const Operator* op) {
   return reinterpret_cast<const Operator1<float, base::bit_equal_to<float>,
                                           base::bit_hash<float>>*>(op)
       ->parameter();
 }
 
 template <>
 inline double const& OpParameter(const Operator* op) {
   return reinterpret_cast<const Operator1<double, base::bit_equal_to<double>,
                                           base::bit_hash<double>>*>(op)
       ->parameter();
 }
 
+template <>
+inline Handle<HeapObject> const& OpParameter(const Operator* op) {
+  return reinterpret_cast<
+             const Operator1<Handle<HeapObject>, Handle<HeapObject>::equal_to,
+                             Handle<HeapObject>::hash>*>(op)->parameter();
+}
+
+template <>
+inline Handle<String> const& OpParameter(const Operator* op) {
+  return reinterpret_cast<const Operator1<
+      Handle<String>, Handle<String>::equal_to, Handle<String>::hash>*>(op)
+      ->parameter();
+}
+
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_OPERATOR_H_