Create frequently used symbols in the vm isolate

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"
 #include "vm/flow_graph_compiler.h"
 #include "vm/locations.h"
 #include "vm/object_store.h"
 #include "vm/parser.h"
 #include "vm/stub_code.h"
+#include "vm/symbols.h"
 
 #define __ compiler->assembler()->
 
 namespace dart {
 
 DECLARE_FLAG(int, optimization_counter_threshold);
 DECLARE_FLAG(bool, trace_functions);
 
 // Generic summary for call instructions that have all arguments pushed
 // on the stack and return the result in a fixed register RAX.
@@ skipping 280 matching lines @@
                                   comp->locs()->out().reg());
 }
 
 
 static void EmitEqualityAsInstanceCall(FlowGraphCompiler* compiler,
                                        EqualityCompareComp* comp) {
   compiler->AddCurrentDescriptor(PcDescriptors::kDeopt,
                                  comp->cid(),
                                  comp->token_pos(),
                                  comp->try_index());
-  const String& operator_name = String::ZoneHandle(String::NewSymbol("=="));
+  const String& operator_name = String::ZoneHandle(Symbols::New("=="));
   const int kNumberOfArguments = 2;
   const Array& kNoArgumentNames = Array::Handle();
   const int kNumArgumentsChecked = 2;
 
   compiler->GenerateInstanceCall(comp->cid(),
                                  comp->token_pos(),
                                  comp->try_index(),
                                  operator_name,
                                  kNumberOfArguments,
                                  kNoArgumentNames,
@@ skipping 302 matching lines @@
                               kNumArguments,
                               Array::Handle(),  // No named arguments.
                               deopt,  // Deoptimize target.
                               NULL,   // Fallthrough when done.
                               cid(),
                               token_pos(),
                               try_index());
     return;
   }
   const String& function_name =
-      String::ZoneHandle(String::NewSymbol(Token::Str(kind())));
+      String::ZoneHandle(Symbols::New(Token::Str(kind())));
   compiler->AddCurrentDescriptor(PcDescriptors::kDeopt,
                                  cid(),
                                  token_pos(),
                                  try_index());
   const intptr_t kNumArguments = 2;
   const intptr_t kNumArgsChecked = 2;  // Type-feedback.
   compiler->GenerateInstanceCall(cid(),
                                  token_pos(),
                                  try_index(),
                                  function_name,
@@ skipping 176 matching lines @@
   } else {
     ASSERT(receiver_type() == kIllegalObjectKind);
     return MakeCallSummary();
   }
 }
 
 
 static void EmitStoreIndexedGeneric(FlowGraphCompiler* compiler,
                                     StoreIndexedComp* comp) {
   const String& function_name =
-      String::ZoneHandle(String::NewSymbol(Token::Str(Token::kASSIGN_INDEX)));
+      String::ZoneHandle(Symbols::New(Token::Str(Token::kASSIGN_INDEX)));
 
   compiler->AddCurrentDescriptor(PcDescriptors::kDeopt,
                                  comp->cid(),
                                  comp->token_pos(),
                                  comp->try_index());
 
   const intptr_t kNumArguments = 3;
   const intptr_t kNumArgsChecked = 1;  // Type-feedback.
   compiler->GenerateInstanceCall(comp->cid(),
                                  comp->token_pos(),
@@ skipping 1299 matching lines @@
       EmitGenericEqualityCompare(compiler, *locs(), kind(), this, *ic_data(),
                                  cid(), token_pos(), try_index());
       return;
     }
     // Otherwise polymorphic dispatch?
   }
   // Not equal is always split into '==' and negate,
   Condition branch_condition = (kind() == Token::kNE) ? NOT_EQUAL : EQUAL;
   Token::Kind call_kind = (kind() == Token::kNE) ? Token::kEQ : kind();
   const String& function_name =
-      String::ZoneHandle(String::NewSymbol(Token::Str(call_kind)));
+      String::ZoneHandle(Symbols::New(Token::Str(call_kind)));
   compiler->AddCurrentDescriptor(PcDescriptors::kDeopt,
                                  cid(),
                                  token_pos(),
                                  try_index());
   const intptr_t kNumArguments = 2;
   const intptr_t kNumArgsChecked = 2;  // Type-feedback.
   compiler->GenerateInstanceCall(cid(),
                                  token_pos(),
                                  try_index(),
                                  function_name,
                                  kNumArguments,
                                  Array::ZoneHandle(),  // No optional arguments.
                                  kNumArgsChecked);
   ASSERT(locs()->out().reg() == RAX);
   __ CompareObject(locs()->out().reg(), compiler->bool_true());
   EmitBranchOnCondition(compiler, branch_condition);
 }
 
 }  // namespace dart
 
 #undef __
 
 #endif  // defined TARGET_ARCH_X64