[turbofan] Deferred block spilling heuristic - first step.

src/runtime/runtime-internal.cc

 // Copyright 2014 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/v8.h"
 
 #include "src/arguments.h"
 #include "src/bootstrapper.h"
 #include "src/debug.h"
 #include "src/messages.h"
 #include "src/parser.h"
 #include "src/prettyprinter.h"
 #include "src/runtime/runtime-utils.h"
 
 namespace v8 {
 namespace internal {
 
 RUNTIME_FUNCTION(Runtime_CheckIsBootstrapping) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 0);
   RUNTIME_ASSERT(isolate->bootstrapper()->IsActive());
   return isolate->heap()->undefined_value();
 }
 
 
 RUNTIME_FUNCTION(Runtime_Throw) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
-  return isolate->Throw(args[0]);
+  Object* ret = isolate->Throw(args[0]);

[Benedikt Meurer, 2015/07/28 04:57:17]

What is the motivation for this change?

+  return ret;
 }
 
 
 RUNTIME_FUNCTION(Runtime_ReThrow) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
   return isolate->ReThrow(args[0]);
 }
 
 
@@ skipping 430 matching lines @@
 }
 
 
 RUNTIME_FUNCTION(Runtime_GetCodeStubExportsObject) {
   HandleScope shs(isolate);
   return isolate->heap()->code_stub_exports_object();
 }
 
 }  // namespace internal
 }  // namespace v8