Increase the heap growth rate as it decreases compile-time by as much as 10%.

dart/utils/compiler/build_helper.dart

 // 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.
 
 import 'dart:io';
 import 'dart:uri';
 
 import '../../sdk/lib/_internal/compiler/implementation/util/uri_extras.dart';
 import '../../sdk/lib/_internal/compiler/implementation/filenames.dart';
 
@@ skipping 76 matching lines @@
 
   print('dartUri = $dartUri');
   print('dartVmLocation = $dartVmLocation');
   print('${name}Uri = $uri');
   print('${name}Path = $path');
   print('${name}PathWin = $pathWin');
 
   // Tell the VM to grow the heap more aggressively. This should only
   // be necessary temporarily until the VM is better at detecting how
   // applications use memory.
   // TODO(ahe): Remove this option.

[ngeoffray, 2012/11/27 09:07:37]

Please also mention the bug number.

[ahe, 2012/11/27 09:53:28]

Done.

-  options = ' --heap_growth_rate=32$options';
+  options = ' --heap_growth_rate=512$options';
 
   // Tell the VM to don't bother inlining methods. So far it isn't
   // paying off but the VM team is working on fixing that.
   // TODO(ahe): Remove this option.
   options = ' --no_use_inlining$options';
 
   return [
 '''
 #!/bin/bash
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
@@ skipping 33 matching lines @@
 REM Does the path have a trailing slash? If so, remove it.
 if %SCRIPTPATH:~-1%==\ set SCRIPTPATH=%SCRIPTPATH:~0,-1%
 
 set arguments=%*
 set SNAPSHOTNAME=%SCRIPTPATH%dart2js.snapshot
 if exist %SNAPSHOTNAME% set SNAPSHOT=--use_script_snapshot=%SNAPSHOTNAME%
 
 "%SCRIPTPATH%\dart.exe"$options %SNAPSHOT% "%SCRIPTPATH%$pathWin" %arguments%
 '''.replaceAll('\n', '\r\n')];
 }