Start using OStreams.

src/hydrogen-gvn.cc

 // 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.
 
 #include "src/hydrogen.h"
 #include "src/hydrogen-gvn.h"
 #include "src/v8.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 431 matching lines @@
 
 bool SideEffectsTracker::ComputeGlobalVar(Unique<Cell> cell, int* index) {
   for (int i = 0; i < num_global_vars_; ++i) {
     if (cell == global_vars_[i]) {
       *index = i;
       return true;
     }
   }
   if (num_global_vars_ < kNumberOfGlobalVars) {
     if (FLAG_trace_gvn) {
-      HeapStringAllocator allocator;
-      StringStream stream(&allocator);
-      stream.Add("Tracking global var [%p] (mapped to index %d)\n",
-                 *cell.handle(), num_global_vars_);
-      stream.OutputToStdOut();
+      OFStream os(stdout);
+      os << "Tracking global var [" << *cell.handle() << "] "
+         << "(mapped to index " << num_global_vars_ << ")" << endl;
     }
     *index = num_global_vars_;
     global_vars_[num_global_vars_++] = cell;
     return true;
   }
   return false;
 }
 
 
 bool SideEffectsTracker::ComputeInobjectField(HObjectAccess access,
@@ skipping 437 matching lines @@
                                                       dominated);
         successor_map->Kill(side_effects_on_all_paths);
         successor_dominators->Kill(side_effects_on_all_paths);
       }
     }
     current = next;
   }
 }
 
 } }  // namespace v8::internal