Make --always-opt also optimize top-level code.

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 1454 matching lines @@
     // TODO(titzer): reuse the AST and scope info from this compile.
     CompilationInfoWithZone nested(function);
     nested.EnableDeoptimizationSupport();
     if (!GetUnoptimizedCodeCommon(&nested).ToHandle(&current_code)) {
       return MaybeHandle<Code>();
     }
     shared->ReplaceCode(*current_code);
   }
   current_code->set_profiler_ticks(0);
 
+  // TODO(mstarzinger): We cannot properly deserialize a scope chain containing
+  // an eval scope and hence would fail at parsing the eval source again.
+  if (shared->disable_optimization_reason() == kEval) {
+    return MaybeHandle<Code>();
+  }
+
+  // TODO(mstarzinger): We cannot properly deserialize a scope chain for the
+  // builtin context, hence Genesis::InstallExperimentalNatives would fail.
+  if (shared->is_toplevel() && isolate->bootstrapper()->IsActive()) {
+    return MaybeHandle<Code>();
+  }
+
+  // TODO(titzer): Some top-level code times out because of missing interrupt
+  // checks at back-branches, these are currently marked with --no-turbo-osr.
+  if (shared->is_toplevel() && !FLAG_turbo_osr) {
+    return MaybeHandle<Code>();
+  }
+
   info->SetOptimizing(osr_ast_id, current_code);
 
   if (mode == CONCURRENT) {
     if (GetOptimizedCodeLater(info.get())) {
       info.Detach();  // The background recompile job owns this now.
       return isolate->builtins()->InOptimizationQueue();
     }
   } else {
     if (GetOptimizedCodeNow(info.get())) return info->code();
   }
@@ skipping 93 matching lines @@
 }
 
 
 #if DEBUG
 void CompilationInfo::PrintAstForTesting() {
   PrintF("--- Source from AST ---\n%s\n",
          PrettyPrinter(isolate(), zone()).PrintProgram(function()));
 }
 #endif
 } }  // namespace v8::internal