Create frequently used symbols in the vm isolate

vm/compiler.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/compiler.h"
 
 #include "vm/assembler.h"
 #include "vm/ast_printer.h"
 #include "vm/code_generator.h"
 #include "vm/code_patcher.h"
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
 #include "vm/disassembler.h"
 #include "vm/exceptions.h"
 #include "vm/flags.h"
 #include "vm/flow_graph_allocator.h"
 #include "vm/flow_graph_builder.h"
 #include "vm/flow_graph_compiler.h"
 #include "vm/flow_graph_optimizer.h"
 #include "vm/il_printer.h"
 #include "vm/longjump.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/os.h"
 #include "vm/parser.h"
 #include "vm/scanner.h"
+#include "vm/symbols.h"
 #include "vm/timer.h"
 
 namespace dart {
 
 DEFINE_FLAG(bool, disassemble, false, "Disassemble dart code.");
 DEFINE_FLAG(bool, trace_compiler, false, "Trace compiler operations.");
 DEFINE_FLAG(int, deoptimization_counter_threshold, 5,
     "How many times we allow deoptimization before we disallow"
     " certain optimizations");
 DEFINE_FLAG(bool, trace_bailout, false, "Print bailout from ssa compiler.");
@@ skipping 389 matching lines @@
   isolate->set_long_jump_base(&jump);
   if (setjmp(*jump.Set()) == 0) {
     if (FLAG_trace_compiler) {
       OS::Print("compiling expression: ");
       AstPrinter::PrintNode(fragment);
     }
 
     // Create a dummy function object for the code generator.
     const char* kEvalConst = "eval_const";
     const Function& func = Function::Handle(Function::New(
-        String::Handle(String::NewSymbol(kEvalConst)),
+        String::Handle(Symbols::New(kEvalConst)),
         RawFunction::kConstImplicitGetter,
         true,  // static function.
         false,  // not const function.
         fragment->token_pos()));
 
     func.set_result_type(Type::Handle(Type::DynamicType()));
     func.set_num_fixed_parameters(0);
     func.set_num_optional_parameters(0);
 
     // The function needs to be associated with a named Class: the interface
@@ skipping 29 matching lines @@
     isolate->object_store()->clear_sticky_error();
     isolate->set_long_jump_base(base);
     return result.raw();
   }
   UNREACHABLE();
   return Object::null();
 }
 
 
 }  // namespace dart