First steps toward a two stages new compiler.

runtime/vm/code_generator_ia32.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/globals.h"  // Needed here to get TARGET_ARCH_IA32.
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/code_generator.h"
 
 #include "lib/error.h"
@@ skipping 638 matching lines @@
     // collection and counting stub.
     const Function& function =
           Function::ZoneHandle(parsed_function_.function().raw());
     __ LoadObject(EBX, function);
     __ incl(FieldAddress(EBX, Function::usage_counter_offset()));
     if (CodeGenerator::CanOptimize()) {
       // Do not optimize if usage count must be reported.
       __ cmpl(FieldAddress(EBX, Function::usage_counter_offset()),
           Immediate(FLAG_optimization_counter_threshold));
       Label not_yet_hot;
-      __ j(LESS_EQUAL, &not_yet_hot);
+      __ j(LESS_EQUAL, &not_yet_hot, Assembler::kNearJump);
       __ pushl(EAX);  // Preserve result.
       __ pushl(EBX);  // Argument for runtime: function to optimize.
       __ CallRuntime(kOptimizeInvokedFunctionRuntimeEntry);
       __ popl(EBX);  // Remove argument.
       __ popl(EAX);  // Restore result.
       __ Bind(&not_yet_hot);
     }
   }
   if (FLAG_trace_functions) {
     const Function& function =
@@ skipping 2284 matching lines @@
   const Error& error = Error::Handle(
       Parser::FormatError(script, token_index, "Error", format, args));
   va_end(args);
   Isolate::Current()->long_jump_base()->Jump(1, error);
   UNREACHABLE();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32