Ship try-finally optimization in Turbofan.

test/cctest/test-profile-generator.cc

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 680 matching lines @@
   v8::Context::Scope context_scope(env);
 
   v8::CpuProfiler* profiler = env->GetIsolate()->GetCpuProfiler();
   i::CpuProfiler* iprofiler = reinterpret_cast<i::CpuProfiler*>(profiler);
   CHECK_EQ(0, iprofiler->GetProfilesCount());
   v8::Local<v8::Script> script =
       v8_compile(v8_str("function Debugger() {\n"
                         "  debugger;\n"
                         "  startProfiling();\n"
                         "}\n"
-                        "function TryFinally() {\n"
-                        "  try {\n"
-                        "    Debugger();\n"
-                        "  } finally { };\n"
-                        "}\n"
-                        "TryFinally();\n"
+                        "Debugger();\n"
                         "stopProfiling();"));
   script->Run(v8::Isolate::GetCurrent()->GetCurrentContext()).ToLocalChecked();
   CHECK_EQ(1, iprofiler->GetProfilesCount());
   const v8::CpuProfile* profile = i::ProfilerExtension::last_profile;
   CHECK(profile);
   const v8::CpuProfileNode* current = profile->GetTopDownRoot();
   reinterpret_cast<ProfileNode*>(
       const_cast<v8::CpuProfileNode*>(current))->Print(0);
   // The tree should look like this:
   //  (root)
   //   ""
-  //     kTryFinallyStatement
-  //       kDebuggerStatement
+  //     kDebuggerStatement
   current = PickChild(current, "");
   CHECK(const_cast<v8::CpuProfileNode*>(current));
 
-  current = PickChild(current, "TryFinally");
-  CHECK(const_cast<v8::CpuProfileNode*>(current));
-  CHECK(!strcmp("TryFinallyStatement", current->GetBailoutReason()));
-
   current = PickChild(current, "Debugger");
   CHECK(const_cast<v8::CpuProfileNode*>(current));
   CHECK(!strcmp("DebuggerStatement", current->GetBailoutReason()));
 }