Fixed compilation time measurement, restructure some code.

runtime/vm/opt_code_generator_ia32.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_IA32.
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/opt_code_generator.h"
 
 #include "vm/assembler_macros.h"
@@ skipping 223 matching lines @@
   GrowableArray<const LocalVariable*> locals_;
 
   DISALLOW_COPY_AND_ASSIGN(ClassesForLocals);
 };
 
 
 OptimizingCodeGenerator::OptimizingCodeGenerator(
     Assembler* assembler, const ParsedFunction& parsed_function)
         : CodeGenerator(assembler, parsed_function),
           deoptimization_blobs_(4),
-          classes_for_locals_(new ClassesForLocals()),
+          classes_for_locals_(NULL),
           smi_class_(Class::ZoneHandle(Isolate::Current()->object_store()
               ->smi_class())),
           double_class_(Class::ZoneHandle(Isolate::Current()->object_store()
               ->double_class())),
           growable_object_array_class_(Class::ZoneHandle(Isolate::Current()
               ->object_store()->growable_object_array_class())) {
   ASSERT(parsed_function.function().is_optimizable());
 }
 
 
+void OptimizingCodeGenerator::InitGenerator() {
+  CodeGenerator::InitGenerator();
+  classes_for_locals_ = new ClassesForLocals();
+}
+
+
 DeoptimizationBlob*
 OptimizingCodeGenerator::AddDeoptimizationBlob(AstNode* node,
                                                DeoptReasonId reason_id) {
   DeoptimizationBlob* d = new DeoptimizationBlob(node, reason_id);
   deoptimization_blobs_.Add(d);
   return d;
 }
 
 
 DeoptimizationBlob*
@@ skipping 2648 matching lines @@
     }
   }
   // TODO(srdjan): Implement unary kSUB (negate) Mint.
   CodeGenerator::VisitUnaryOpNode(node);
 }
 
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32