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

test/cctest/compiler/test-js-typed-lowering.cc

 // 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.
 
 #include "src/compiler/js-graph.h"
 #include "src/compiler/js-typed-lowering.h"
 #include "src/compiler/machine-operator.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/opcodes.h"
 #include "src/compiler/operator-properties.h"
@@ skipping 45 matching lines @@
   Typer typer;
   Node* context_node;
 
   Node* Parameter(Type* t, int32_t index = 0) {
     Node* n = graph.NewNode(common.Parameter(index), graph.start());
     NodeProperties::SetBounds(n, Bounds(Type::None(), t));
     return n;
   }
 
   Node* UndefinedConstant() {
-    Unique<HeapObject> unique = Unique<HeapObject>::CreateImmovable(
-        isolate->factory()->undefined_value());
-    return graph.NewNode(common.HeapConstant(unique));
+    Handle<HeapObject> value = isolate->factory()->undefined_value();
+    return graph.NewNode(common.HeapConstant(value));
   }
 
   Node* HeapConstant(Handle<HeapObject> constant) {
-    Unique<HeapObject> unique =
-        Unique<HeapObject>::CreateUninitialized(constant);
-    return graph.NewNode(common.HeapConstant(unique));
+    return graph.NewNode(common.HeapConstant(constant));
   }
 
   Node* EmptyFrameState(Node* context) {
     Node* parameters = graph.NewNode(common.StateValues(0));
     Node* locals = graph.NewNode(common.StateValues(0));
     Node* stack = graph.NewNode(common.StateValues(0));
 
     Node* state_node = graph.NewNode(
         common.FrameState(BailoutId::None(), OutputFrameStateCombine::Ignore(),
                           nullptr),
@@ skipping 101 matching lines @@
   }
 
   void CheckTrue(Node* result) {
     CheckHandle(isolate->factory()->true_value(), result);
   }
 
   void CheckFalse(Node* result) {
     CheckHandle(isolate->factory()->false_value(), result);
   }
 
-  void CheckHandle(Handle<Object> expected, Node* result) {
+  void CheckHandle(Handle<HeapObject> expected, Node* result) {
     CHECK_EQ(IrOpcode::kHeapConstant, result->opcode());
-    Handle<Object> value = OpParameter<Unique<Object> >(result).handle();
+    Handle<HeapObject> value = OpParameter<Handle<HeapObject>>(result);
     CHECK_EQ(*expected, *value);
   }
 };
 
 static Type* kStringTypes[] = {Type::InternalizedString(), Type::OtherString(),
                                Type::String()};
 
 
 static Type* kInt32Types[] = {Type::UnsignedSmall(), Type::Negative32(),
                               Type::Unsigned31(),    Type::SignedSmall(),
@@ skipping 1042 matching lines @@
           CHECK_EQ(p1, r->InputAt(0));
           CHECK_EQ(p0, r->InputAt(1));
         } else {
           CHECK_EQ(p0, r->InputAt(0));
           CHECK_EQ(p1, r->InputAt(1));
         }
       }
     }
   }
 }