VM compiler: Remove dead strict-compare instructions in optimized code.

runtime/vm/parser.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/parser.h"
 #include "vm/flags.h"
 
 #ifndef DART_PRECOMPILED
 
 #include "lib/invocation_mirror.h"
@@ skipping 805 matching lines @@
 
 void Parser::ParseClass(const Class& cls) {
   Thread* thread = Thread::Current();
   Zone* zone = thread->zone();
   const int64_t num_tokes_before = STAT_VALUE(thread, num_tokens_consumed);
   TimelineDurationScope tds(thread,
                             thread->isolate()->GetCompilerStream(),
                             "ParseClass");
   if (tds.enabled()) {
     tds.SetNumArguments(1);
-    tds.CopyArgument(
-        0,
-        "class",
-        const_cast<char*>(String::Handle(cls.Name()).ToCString()));
+    tds.CopyArgument(0, "class", String::Handle(cls.Name()).ToCString());
   }
   if (!cls.is_synthesized_class()) {
     ASSERT(thread->long_jump_base()->IsSafeToJump());
     CSTAT_TIMER_SCOPE(thread, parser_timer);
     const Script& script = Script::Handle(zone, cls.script());
     const Library& lib = Library::Handle(zone, cls.library());
     Parser parser(script, lib, cls.token_pos());
     parser.ParseClassDefinition(cls);
   } else if (cls.is_enum_class()) {
     ASSERT(thread->long_jump_base()->IsSafeToJump());
@@ skipping 100 matching lines @@
   TimelineDurationScope tds(thread,
                             thread->isolate()->GetCompilerStream(),
                             "ParseFunction");
   ASSERT(thread->long_jump_base()->IsSafeToJump());
   ASSERT(parsed_function != NULL);
   const Function& func = parsed_function->function();
   const Script& script = Script::Handle(zone, func.script());
   Parser parser(script, parsed_function, func.token_pos());
   if (tds.enabled()) {
     tds.SetNumArguments(1);
-    tds.CopyArgument(
-        0,
-        "function",
-        const_cast<char*>(String::Handle(func.name()).ToCString()));
+    tds.CopyArgument(0, "function", String::Handle(func.name()).ToCString());
   }
   SequenceNode* node_sequence = NULL;
   switch (func.kind()) {
     case RawFunction::kClosureFunction:
       if (func.IsImplicitClosureFunction()) {
         node_sequence =
             parser.ParseImplicitClosure(func);
         break;
       }
       if (func.IsConstructorClosureFunction()) {
@@ skipping 13530 matching lines @@
     const ArgumentListNode& function_args,
     const LocalVariable* temp_for_last_arg,
     bool is_super_invocation) {
   UNREACHABLE();
   return NULL;
 }
 
 }  // namespace dart
 
 #endif  // DART_PRECOMPILED