Eliminate some unnecessary handle allocations in the compiler.

runtime/vm/intermediate_language.cc

 // Copyright (c) 2013, 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/intermediate_language.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/bit_vector.h"
 #include "vm/cpu.h"
 #include "vm/dart_entry.h"
@@ skipping 2331 matching lines @@
                                      dst_type(),
                                      dst_name(),
                                      locs());
   ASSERT(locs()->in(0).reg() == locs()->out(0).reg());
 }
 
 
 Environment* Environment::From(Isolate* isolate,
                                const GrowableArray<Definition*>& definitions,
                                intptr_t fixed_parameter_count,
-                               const Code& code) {
+                               const ParsedFunction* parsed_function) {
   Environment* env =
       new(isolate) Environment(definitions.length(),
                                fixed_parameter_count,
                                Isolate::kNoDeoptId,
-                               code,
+                               parsed_function,
                                NULL);
   for (intptr_t i = 0; i < definitions.length(); ++i) {
     env->values_.Add(new(isolate) Value(definitions[i]));
   }
   return env;
 }
 
 
 Environment* Environment::DeepCopy(Isolate* isolate, intptr_t length) const {
   ASSERT(length <= values_.length());
-  Environment* copy =
-      new(isolate) Environment(
-          length,
-          fixed_parameter_count_,
-          deopt_id_,
-          code_,
-          (outer_ == NULL) ? NULL : outer_->DeepCopy(isolate));
+  Environment* copy = new(isolate) Environment(
+      length,
+      fixed_parameter_count_,
+      deopt_id_,
+      parsed_function_,
+      (outer_ == NULL) ? NULL : outer_->DeepCopy(isolate));
   if (locations_ != NULL) {
     Location* new_locations = isolate->current_zone()->Alloc<Location>(length);
     copy->set_locations(new_locations);
   }
   for (intptr_t i = 0; i < length; ++i) {
     copy->values_.Add(values_[i]->Copy(isolate));
     if (locations_ != NULL) {
       copy->locations_[i] = locations_[i].Copy();
     }
   }
@@ skipping 1069 matching lines @@
     case Token::kTRUNCDIV: return 0;
     case Token::kMOD: return 1;
     default: UNIMPLEMENTED(); return -1;
   }
 }
 
 
 #undef __
 
 }  // namespace dart