New approach to Crankshaft decision-making

src/heap.cc

Index: src/heap.cc
diff --git a/src/heap.cc b/src/heap.cc
index 4feb70eb412d8558fc15c8f88116fa3c8f984df6..e16bd50d4879971365cb819f4ff509cdc52c5d75 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -1157,7 +1157,6 @@ void Heap::Scavenge() {
   promotion_queue_.Destroy();
 
   LiveObjectList::UpdateReferencesForScavengeGC();
-  isolate()->runtime_profiler()->UpdateSamplesAfterScavenge();
   incremental_marking()->UpdateMarkingDequeAfterScavenge();
 
   ASSERT(new_space_front == new_space_.top());
@@ -2748,6 +2747,7 @@ MaybeObject* Heap::AllocateSharedFunctionInfo(Object* name) {
   share->set_initial_map(undefined_value(), SKIP_WRITE_BARRIER);
   share->set_this_property_assignments(undefined_value(), SKIP_WRITE_BARRIER);
   share->set_deopt_counter(Smi::FromInt(FLAG_deopt_every_n_times));
+  share->set_profiler_ticks(0);
 
   // Set integer fields (smi or int, depending on the architecture).
   share->set_length(0);