[turbofan] Reland: Optimize loads from the global object in JSTypeFeedbackSpecializer.

src/compiler.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler.h"
 
 #include <algorithm>
 
 #include "src/ast-numbering.h"
 #include "src/bootstrapper.h"
@@ skipping 382 matching lines @@
       info()->MarkAsContextSpecializing();
     } else if (FLAG_turbo_type_feedback) {
       info()->MarkAsTypeFeedbackEnabled();
       info()->EnsureFeedbackVector();
     }
 
     Timer t(this, &time_taken_to_create_graph_);
     compiler::Pipeline pipeline(info());
     pipeline.GenerateCode();
     if (!info()->code().is_null()) {
+      info()->dependencies()->Commit(info()->code());
       return SetLastStatus(SUCCEEDED);
     }
   }
 
   // Do not use Crankshaft if the code is intended to be serialized.
   if (!isolate()->use_crankshaft()) return SetLastStatus(FAILED);
 
   if (FLAG_trace_opt) {
     OFStream os(stdout);
     os << "[compiling method " << Brief(*info()->closure())
@@ skipping 1128 matching lines @@
 }
 
 
 #if DEBUG
 void CompilationInfo::PrintAstForTesting() {
   PrintF("--- Source from AST ---\n%s\n",
          PrettyPrinter(isolate(), zone()).PrintProgram(function()));
 }
 #endif
 } }  // namespace v8::internal