Incremental changes from background compilation work

runtime/vm/flow_graph_compiler_arm.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/globals.h"  // Needed here to get TARGET_ARCH_ARM.
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
@@ skipping 965 matching lines @@
 
 
 static const Register new_pp = NOTFP;
 
 
 void FlowGraphCompiler::EmitFrameEntry() {
   const Function& function = parsed_function().function();
   if (CanOptimizeFunction() &&
       function.IsOptimizable() &&
       (!is_optimizing() || may_reoptimize())) {
+    __ Comment("Invocation Count Check");
     const Register function_reg = R8;
-
     // The pool pointer is not setup before entering the Dart frame.
     // Temporarily setup pool pointer for this dart function.
     __ LoadPoolPointer(new_pp);
     // Load function object from object pool.
     __ LoadFunctionFromCalleePool(function_reg, function, new_pp);
 
     __ ldr(R3, FieldAddress(function_reg,
                             Function::usage_counter_offset()));
     // Reoptimization of an optimized function is triggered by counting in
     // IC stubs, but not at the entry of the function.
@@ skipping 935 matching lines @@
   DRegister dreg = EvenDRegisterOf(reg);
   __ vldrd(dreg, Address(SP, kDoubleSize, Address::PostIndex));
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM