Simplify feedback vector creation and store in SharedFunctionInfo.

src/typing.cc

Index: src/typing.cc
diff --git a/src/typing.cc b/src/typing.cc
index 3cca0f4261efb2be1962d8f77caecad16575226d..ba528fc6e8e367765d0370a07fc30a2ba3f96434 100644
--- a/src/typing.cc
+++ b/src/typing.cc
@@ -40,6 +40,7 @@ AstTyper::AstTyper(CompilationInfo* info)
     : info_(info),
       oracle_(
           Handle<Code>(info->closure()->shared()->code()),
+          Handle<FixedArray>(info->closure()->shared()->feedback_vector()),

[mvstanton, 2014/04/30 08:31:18]

Warning: you aren't copying the vector, what if a gc happens? Strive to reduce
uncertainty.

           Handle<Context>(info->closure()->context()->native_context()),

[Benedikt Meurer, 2014/04/28 19:17:00]

Nit: Use handle() instead of Handle<T>()

[mvstanton, 2014/04/30 08:31:18]

Done.

           info->zone()),
       store_(info->zone()) {
@@ -530,7 +531,7 @@ void AstTyper::VisitCall(Call* expr) {
   // Collect type feedback.
   RECURSE(Visit(expr->expression()));
   if (!expr->expression()->IsProperty() &&
-      expr->HasCallFeedbackSlot() &&
+      expr->IsUsingCallFeedbackSlot(isolate()) &&
       oracle()->CallIsMonomorphic(expr->CallFeedbackSlot())) {
     expr->set_target(oracle()->GetCallTarget(expr->CallFeedbackSlot()));
   }