Trace when disabling optimized code (--trace-disabling-optimized-code)

runtime/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"
@@ skipping 81 matching lines @@
     return error.raw();
   }
   UNREACHABLE();
   return Error::null();
 }
 
 
 static void InstallUnoptimizedCode(const Function& function) {
   // Disable optimized code.
   ASSERT(function.HasOptimizedCode());
-  // Patch entry of optimized code.
-  CodePatcher::PatchEntry(Code::Handle(function.CurrentCode()));
   if (FLAG_trace_compiler) {
     OS::Print("--> patching entry %#"Px"\n",
               Code::Handle(function.CurrentCode()).EntryPoint());
   }
-  // Use previously compiled code.
-  function.SetCode(Code::Handle(function.unoptimized_code()));
-  CodePatcher::RestoreEntry(Code::Handle(function.unoptimized_code()));
+  function.SwitchToUnoptimizedCode();
   if (FLAG_trace_compiler) {
     OS::Print("--> restoring entry at %#"Px"\n",
               Code::Handle(function.unoptimized_code()).EntryPoint());
   }
 }
 
 
 // Return false if bailed out.
 static bool CompileParsedFunctionHelper(const ParsedFunction& parsed_function,
                                         bool optimized) {
@@ skipping 488 matching lines @@
     result = isolate->object_store()->sticky_error();
     isolate->object_store()->clear_sticky_error();
     isolate->set_long_jump_base(base);
     return result.raw();
   }
   UNREACHABLE();
   return Object::null();
 }
 
 }  // namespace dart