Adding a type vector to replace type cells.

src/compiler.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 225 matching lines @@
 // for the SharedFunctionInfo::kCallsUntilPrimitiveOptimization-th time.
 bool CompilationInfo::ShouldSelfOptimize() {
   return FLAG_crankshaft &&
       !function()->flags()->Contains(kDontSelfOptimize) &&
       !function()->dont_optimize() &&
       function()->scope()->AllowsLazyCompilation() &&
       (shared_info().is_null() || !shared_info()->optimization_disabled());
 }
 
 
+void CompilationInfo::ProcessFeedbackSlots() {
+  // Scope analysis must have been done.
+  if (function()->slot_count() >= 0) {

[mvstanton, 2014/01/30 15:13:41]

turn this to an assedrt.

[mvstanton, 2014/01/30 17:37:41]

Done.

+    // The work was already done.
+    return;
+  }
+
+  if (function()->slot_nodes() == NULL) {
+    function()->set_slot_count(0);
+    return;
+  }
+
+  int current_slot = 0;
+  for (int i = 0; i < function()->slot_nodes()->length(); i++) {
+    FeedbackSlotInterface* slot_interface =
+        function()->slot_nodes()->at(i);
+    int count = slot_interface->GetFeedbackSlotCount(isolate());
+    if (count > 0) {
+      slot_interface->SetFirstFeedbackSlot(current_slot);
+      current_slot += count;
+    }
+  }
+
+  function()->set_slot_count(current_slot);
+}
+
+
 class HOptimizedGraphBuilderWithPositions: public HOptimizedGraphBuilder {
  public:
   explicit HOptimizedGraphBuilderWithPositions(CompilationInfo* info)
       : HOptimizedGraphBuilder(info) {
   }
 
 #define DEF_VISIT(type)                                 \
   virtual void Visit##type(type* node) V8_OVERRIDE {    \
     if (node->position() != RelocInfo::kNoPosition) {   \
       SetSourcePosition(node->position());              \
@@ skipping 1035 matching lines @@
   AllowHandleDereference allow_deref;
   bool tracing_on = info()->IsStub()
       ? FLAG_trace_hydrogen_stubs
       : (FLAG_trace_hydrogen &&
          info()->closure()->PassesFilter(FLAG_trace_hydrogen_filter));
   return (tracing_on &&
       OS::StrChr(const_cast<char*>(FLAG_trace_phase), name_[0]) != NULL);
 }
 
 } }  // namespace v8::internal