Re-optimize faster after making a pretenuring decision.

src/deoptimizer.cc

Index: src/deoptimizer.cc
diff --git a/src/deoptimizer.cc b/src/deoptimizer.cc
index 6e9ead7e2040c63fda2dbbe4dd3f5853866db775..f81d738734299a72f4450c56dd71415e4afccb6e 100644
--- a/src/deoptimizer.cc
+++ b/src/deoptimizer.cc
@@ -322,6 +322,10 @@ void Deoptimizer::DeoptimizeMarkedCodeForContext(Context* context) {
         PrintF(scope.file(),
                " / %" V8PRIxPTR "]\n", reinterpret_cast<intptr_t>(function));
       }
+
+      if (code->marked_for_instant_optimization()) {

[titzer, 2014/05/12 12:05:24]

This isn't the right place for this somehow. It's surprising that
DeoptimizeMarkedCode actually calls the compiler.

[Hannes Payer (out of office), 2014/05/12 16:31:19]

Not sure, it seems like the right place to express "deoptimize and re-optimize
immediately semantics". And since we just have the code object at gc time which
we can mark for deoptimization and re-optimization, it seems to be fine.

+        Compiler::Optimize(function, "marked for instant optimization");
+      }
     }
   };