Remove built-in identifier 'negate' from VM

runtime/vm/flow_graph_builder.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/flow_graph_builder.h"
 
 #include "vm/ast_printer.h"
 #include "vm/code_descriptors.h"
 #include "vm/dart_entry.h"
 #include "vm/flags.h"
@@ skipping 964 matching lines @@
     return;
   }
 
   ValueGraphVisitor for_value(owner(), temp_index());
   node->operand()->Visit(&for_value);
   Append(for_value);
   PushArgumentInstr* push_value = PushArgument(for_value.value());
   ZoneGrowableArray<PushArgumentInstr*>* arguments =
       new ZoneGrowableArray<PushArgumentInstr*>(1);
   arguments->Add(push_value);
-  InstanceCallInstr* call = (node->kind() == Token::kSUB)
-      ? new InstanceCallInstr(node->token_pos(),
-                              String::ZoneHandle(Symbols::New("unary-")),
-                              Token::kNEGATE,
-                              arguments,
-                              Array::ZoneHandle(),
-                              1)
-      : new InstanceCallInstr(node->token_pos(),
-                              String::ZoneHandle(
-                                  Symbols::New(Token::Str(node->kind()))),
-                              node->kind(),
-                              arguments,
-                              Array::ZoneHandle(),
-                              1);
+  InstanceCallInstr* call =
+      new InstanceCallInstr(node->token_pos(),
+                            String::ZoneHandle(
+                                Symbols::New(Token::Str(node->kind()))),
+                            node->kind(),
+                            arguments,
+                            Array::ZoneHandle(),
+                            1);
   ReturnDefinition(call);
 }
 
 
 void EffectGraphVisitor::VisitConditionalExprNode(ConditionalExprNode* node) {
   TestGraphVisitor for_test(owner(),
                             temp_index(),
                             node->condition()->token_pos());
   node->condition()->Visit(&for_test);
 
@@ skipping 1668 matching lines @@
   intptr_t len = OS::SNPrint(NULL, 0, kFormat, function_name, reason) + 1;
   char* chars = Isolate::Current()->current_zone()->Alloc<char>(len);
   OS::SNPrint(chars, len, kFormat, function_name, reason);
   const Error& error = Error::Handle(
       LanguageError::New(String::Handle(String::New(chars))));
   Isolate::Current()->long_jump_base()->Jump(1, error);
 }
 
 
 }  // namespace dart