Generate a custom OSR entrypoint for OSR compiles on all platforms, and transition to optimized cod…

src/hydrogen.h

 // 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 533 matching lines @@
   int pop_count() const { return pop_count_; }
   int push_count() const { return push_count_; }
 
   BailoutId ast_id() const { return ast_id_; }
   void set_ast_id(BailoutId id) { ast_id_ = id; }
 
   HEnterInlined* entry() const { return entry_; }
   void set_entry(HEnterInlined* entry) { entry_ = entry; }
 
   int length() const { return values_.length(); }
-  bool is_special_index(int i) const {
-    return i >= parameter_count() && i < parameter_count() + specials_count();
-  }
 
   int first_expression_index() const {
     return parameter_count() + specials_count() + local_count();
   }
 
   int first_local_index() const {
     return parameter_count() + specials_count();
   }
 
   void Bind(Variable* variable, HValue* value) {
@@ skipping 98 matching lines @@
   // Stack-allocated local indices are shifted by the number of parameters.
   int IndexFor(Variable* variable) const {
     ASSERT(variable->IsStackAllocated());
     int shift = variable->IsParameter()
         ? 1
         : parameter_count_ + specials_count_;
     return variable->index() + shift;
   }
 
   bool is_local_index(int i) const {
-    return i >= first_local_index() &&
-           i < first_expression_index();
+    return i >= first_local_index() && i < first_expression_index();
+  }
+
+  bool is_parameter_index(int i) const {
+    return i >= 0 && i < parameter_count();
+  }
+
+  bool is_special_index(int i) const {
+    return i >= parameter_count() && i < parameter_count() + specials_count();
   }
 
   void PrintTo(StringStream* stream);
   void PrintToStd();
 
   Zone* zone() const { return zone_; }
 
  private:
   HEnvironment(const HEnvironment* other, Zone* zone);
 
@@ skipping 1477 matching lines @@
   EmbeddedVector<char, 64> filename_;
   HeapStringAllocator string_allocator_;
   StringStream trace_;
   int indent_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_H_