[compiler] Collect eager inner functions for compilation during renumbering.

src/utils.h

 // Copyright 2012 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_UTILS_H_
 #define V8_UTILS_H_
 
 #include <limits.h>
 #include <stdlib.h>
 #include <string.h>
 #include <cmath>
 
 #include "include/v8.h"
 #include "src/allocation.h"
 #include "src/base/bits.h"
 #include "src/base/compiler-specific.h"
 #include "src/base/logging.h"
 #include "src/base/macros.h"
 #include "src/base/platform/platform.h"
 #include "src/globals.h"
 #include "src/list.h"
 #include "src/vector.h"
+#include "src/zone/zone.h"
 
 namespace v8 {
 namespace internal {
 
 // ----------------------------------------------------------------------------
 // General helper functions
 
 // Returns the value (0 .. 15) of a hexadecimal character c.
 // If c is not a legal hexadecimal character, returns a value < 0.
 inline int HexValue(uc32 c) {
@@ skipping 1646 matching lines @@
     while (i-- > 0) ++t;
     return *t;
   }
 
  private:
   T* head_;
   T** tail_;
   DISALLOW_COPY_AND_ASSIGN(ThreadedList);
 };
 
+// Can be used to create a threaded list of |T|.
+template <typename T>
+class ThreadedListZoneEntry final : public ZoneObject {
+ public:
+  explicit ThreadedListZoneEntry(T value) : value_(value), next_(nullptr) {}
+
+  T value() { return value_; }
+  ThreadedListZoneEntry<T>** next() { return &next_; }
+
+ private:
+  T value_;
+  ThreadedListZoneEntry<T>* next_;
+  DISALLOW_COPY_AND_ASSIGN(ThreadedListZoneEntry);
+};
+
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_UTILS_H_