Move CompilerStats from isolate to thread. Aggregate stats.

runtime/vm/parser.cc

 // Copyright (c) 2012, 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/parser.h"
 #include "vm/flags.h"
 
 #ifndef DART_PRECOMPILED_RUNTIME
 
 #include "lib/invocation_mirror.h"
@@ skipping 12001 matching lines @@
   ConstantPosKey key(String::Handle(Z, script_.url()), token_pos);
   if (isolate()->object_store()->compile_time_constants() == Array::null()) {
     const intptr_t kInitialConstMapSize = 16;
     isolate()->object_store()->set_compile_time_constants(
         Array::Handle(Z, HashTables::New<ConstantsMap>(kInitialConstMapSize,
                                                        Heap::kNew)));
   }
   ConstantsMap constants(isolate()->object_store()->compile_time_constants());
   constants.InsertNewOrGetValue(key, value);
   if (FLAG_compiler_stats) {
-    isolate_->compiler_stats()->num_cached_consts = constants.NumOccupied();
+    thread_->compiler_stats()->num_cached_consts = constants.NumOccupied();
   }
   isolate()->object_store()->set_compile_time_constants(constants.Release());
 }
 
 
 bool Parser::GetCachedConstant(TokenPosition token_pos, Instance* value) {
   if (isolate()->object_store()->compile_time_constants() == Array::null()) {
     return false;
   }
   ConstantPosKey key(String::Handle(Z, script_.url()), token_pos);
   ConstantsMap constants(isolate()->object_store()->compile_time_constants());
   bool is_present = false;
   *value ^= constants.GetOrNull(key, &is_present);
   // Mutator compiler thread may add constants while background compiler
   // is running , and thus change the value of 'compile_time_constants';
   // do not assert that 'compile_time_constants' has not changed.
   constants.Release();
   if (FLAG_compiler_stats && is_present) {
-    isolate_->compiler_stats()->num_const_cache_hits++;
+    thread_->compiler_stats()->num_const_cache_hits++;
   }
   return is_present;
 }
 
 
 RawInstance* Parser::TryCanonicalize(const Instance& instance,
                                      TokenPosition token_pos) {
   if (instance.IsNull()) {
     return instance.raw();
   }
@@ skipping 2410 matching lines @@
     const ArgumentListNode& function_args,
     const LocalVariable* temp_for_last_arg,
     bool is_super_invocation) {
   UNREACHABLE();
   return NULL;
 }
 
 }  // namespace dart
 
 #endif  // DART_PRECOMPILED_RUNTIME