Convert all symbols accessor to return read only handles so that it is not necessary to create a ne…

vm/intermediate_language_x64.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_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/intermediate_language.h"
 
 #include "lib/error.h"
@@ skipping 360 matching lines @@
     ASSERT(!original_ic_data.IsNull());
     if (original_ic_data.NumberOfChecks() == 0) {
       // IC call for reoptimization populates original ICData.
       equality_ic_data = original_ic_data.raw();
     } else {
       // Megamorphic call.
       equality_ic_data = original_ic_data.AsUnaryClassChecks();
     }
   } else {
     equality_ic_data = ICData::New(compiler->parsed_function().function(),
-                                   Symbols::EqualOperatorHandle(),
+                                   Symbols::EqualOperator(),
                                    deopt_id,
                                    kNumArgumentsChecked);
   }
   compiler->GenerateInstanceCall(deopt_id,
                                  token_pos,
                                  kNumberOfArguments,
                                  kNoArgumentNames,
                                  locs,
                                  equality_ic_data);
   Label check_ne;
@@ skipping 612 matching lines @@
 
 
 void StringFromCharCodeInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Register char_code = locs()->in(0).reg();
   Register result = locs()->out().reg();
   __ movq(result,
           Immediate(reinterpret_cast<uword>(Symbols::PredefinedAddress())));
   __ movq(result, Address(result,
                           char_code,
                           TIMES_HALF_WORD_SIZE,  // Char code is a smi.
-                          Symbols::kNullCharId * kWordSize));
+                          Symbols::kNullCharCodeSymbolOffset * kWordSize));
 }
 
 
 LocationSummary* LoadIndexedInstr::MakeLocationSummary() const {
   const intptr_t kNumInputs = 2;
   const intptr_t kNumTemps = 0;
   LocationSummary* locs =
       new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
   locs->set_in(0, Location::RequiresRegister());
   locs->set_in(1, CanBeImmediateIndex(index())
@@ skipping 1439 matching lines @@
 
 void ShiftMintOpInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   UNIMPLEMENTED();
 }
 
 }  // namespace dart
 
 #undef __
 
 #endif  // defined TARGET_ARCH_X64