Another fix for windows breakage after r17521.

src/hydrogen-gvn.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 415 matching lines @@
   char underlying_buffer[kLastFlag * 128];
   Vector<char> buffer(underlying_buffer, sizeof(underlying_buffer));
 #if DEBUG
   int offset = 0;
   const char* separator = "";
   const char* comma = ", ";
   buffer[0] = 0;
   uint32_t set_depends_on = 0;
   uint32_t set_changes = 0;
   for (int bit = 0; bit < kLastFlag; ++bit) {
-    if ((flags.ToIntegral() & (1 << bit)) != 0) {
+    if (flags.Contains(static_cast<GVNFlag>(bit))) {
       if (bit % 2 == 0) {
         set_changes++;
       } else {
         set_depends_on++;
       }
     }
   }
   bool positive_changes = set_changes < (kLastFlag / 2);
   bool positive_depends_on = set_depends_on < (kLastFlag / 2);
   if (set_changes > 0) {
     if (positive_changes) {
       offset += OS::SNPrintF(buffer + offset, "changes [");
     } else {
       offset += OS::SNPrintF(buffer + offset, "changes all except [");
     }
     for (int bit = 0; bit < kLastFlag; ++bit) {
-      if (((flags.ToIntegral() & (1 << bit)) != 0) == positive_changes) {
+      if (flags.Contains(static_cast<GVNFlag>(bit)) == positive_changes) {
         switch (static_cast<GVNFlag>(bit)) {
 #define DECLARE_FLAG(type)                                       \
           case kChanges##type:                                   \
             offset += OS::SNPrintF(buffer + offset, separator);  \
             offset += OS::SNPrintF(buffer + offset, #type);      \
             separator = comma;                                   \
             break;
 GVN_TRACKED_FLAG_LIST(DECLARE_FLAG)
 GVN_UNTRACKED_FLAG_LIST(DECLARE_FLAG)
 #undef DECLARE_FLAG
           default:
               break;
         }
       }
     }
     offset += OS::SNPrintF(buffer + offset, "]");
   }
   if (set_depends_on > 0) {
     separator = "";
     if (set_changes > 0) {
       offset += OS::SNPrintF(buffer + offset, ", ");
     }
     if (positive_depends_on) {
       offset += OS::SNPrintF(buffer + offset, "depends on [");
     } else {
       offset += OS::SNPrintF(buffer + offset, "depends on all except [");
     }
     for (int bit = 0; bit < kLastFlag; ++bit) {
-      if (((flags.ToIntegral() & (1 << bit)) != 0) == positive_depends_on) {
+      if (flags.Contains(static_cast<GVNFlag>(bit)) == positive_depends_on) {
         switch (static_cast<GVNFlag>(bit)) {
 #define DECLARE_FLAG(type)                                       \
           case kDependsOn##type:                                 \
             offset += OS::SNPrintF(buffer + offset, separator);  \
             offset += OS::SNPrintF(buffer + offset, #type);      \
             separator = comma;                                   \
             break;
 GVN_TRACKED_FLAG_LIST(DECLARE_FLAG)
 GVN_UNTRACKED_FLAG_LIST(DECLARE_FLAG)
 #undef DECLARE_FLAG
@@ skipping 351 matching lines @@
                                                       dominated);
         successor_map->Kill(side_effects_on_all_paths);
         successor_dominators->Kill(side_effects_on_all_paths);
       }
     }
     current = next;
   }
 }
 
 } }  // namespace v8::internal