[turbofan] use ZonePool in most places in the compiler pipeline a temp zone is used.

test/cctest/compiler/test-control-reducer.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/v8.h"
 #include "test/cctest/cctest.h"
 
 #include "src/compiler/common-operator.h"
 #include "src/compiler/control-reducer.h"
 #include "src/compiler/graph-inl.h"
@@ skipping 19 matching lines @@
 
   Isolate* isolate;
   CommonOperatorBuilder common;
   Graph graph;
   JSGraph jsgraph;
   Node* start;
   Node* p0;
   Node* one;
   Node* half;
 
-  void Trim() { ControlReducer::TrimGraph(&jsgraph); }
+  void Trim() { ControlReducer::TrimGraph(main_zone(), &jsgraph); }
 };
 
 
 bool IsUsedBy(Node* a, Node* b) {
   for (UseIter i = a->uses().begin(); i != a->uses().end(); ++i) {
     if (b == *i) return true;
   }
   return false;
 }
 
@@ skipping 182 matching lines @@
       T.jsgraph.UndefinedConstant(), T.jsgraph.TheHoleConstant(),
       T.jsgraph.TrueConstant(),      T.jsgraph.FalseConstant(),
       T.jsgraph.NullConstant(),      T.jsgraph.ZeroConstant(),
       T.jsgraph.OneConstant(),       T.jsgraph.NaNConstant(),
       T.jsgraph.Constant(21),        T.jsgraph.Constant(22.2)};
 
   for (size_t i = 0; i < arraysize(other_constants); i++) {
     CheckTrimConstant(&T, other_constants[i]);
   }
 }