[turbofan] Remember types for deoptimization during simplified lowering.

src/compiler/state-values-utils.h

 // Copyright 2015 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_STATE_VALUES_UTILS_H_
 #define V8_COMPILER_STATE_VALUES_UTILS_H_
 
 #include "src/compiler/js-graph.h"
 
 namespace v8 {
@@ skipping 44 matching lines @@
   Zone* zone() { return graph()->zone(); }
 
   JSGraph* js_graph_;
   ZoneHashMap hash_map_;
   ZoneVector<NodeVector*> working_space_;  // One working space per level.
   Node* empty_state_values_;
 };
 
 class StateValuesAccess {
  public:
+  struct TypedNode {
+    Node* node;
+    MachineType type;
+    TypedNode(Node* node, MachineType type) : node(node), type(type) {}
+  };
+
   class iterator {
    public:
     // Bare minimum of operators needed for range iteration.
     bool operator!=(iterator& other);
     iterator& operator++();
-    Node* operator*();
+    TypedNode operator*();
 
    private:
     friend class StateValuesAccess;
 
     iterator() : current_depth_(-1) {}
     explicit iterator(Node* node);
 
     Node* node();
+    MachineType type();
     bool done();
     void Advance();
 
     struct StatePos {
       Node* node;
       int index;
 
       explicit StatePos(Node* node) : node(node), index(0) {}
       StatePos() {}
     };
@@ skipping 15 matching lines @@
 
  private:
   Node* node_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_STATE_VALUES_UTILS_H_