Fix code generation for fast smi loops to support parameters as well....

src/ia32/virtual-frame-ia32.h

 // Copyright 2009 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 428 matching lines @@
   inline void Nip(int num_dropped);
 
   // Check that the frame has no elements containing untagged int32 elements.
   bool HasNoUntaggedInt32Elements() {
     for (int i = 0; i < element_count(); ++i) {
       if (elements_[i].is_untagged_int32()) return false;
     }
     return true;
   }
 
-  // Update the type information of a local variable frame element directly.
+  // Update the type information of a variable frame element directly.
   inline void SetTypeForLocalAt(int index, NumberInfo info);
+  inline void SetTypeForParamAt(int index, NumberInfo info);
 
  private:
   static const int kLocal0Offset = JavaScriptFrameConstants::kLocal0Offset;
   static const int kFunctionOffset = JavaScriptFrameConstants::kFunctionOffset;
   static const int kContextOffset = StandardFrameConstants::kContextOffset;
 
   static const int kHandlerSize = StackHandlerConstants::kSize / kPointerSize;
   static const int kPreallocatedElements = 5 + 8;  // 8 expression stack slots.
 
   ZoneList<FrameElement> elements_;
@@ skipping 161 matching lines @@
   inline bool Equals(VirtualFrame* other);
 
   // Classes that need raw access to the elements_ array.
   friend class DeferredCode;
   friend class JumpTarget;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_VIRTUAL_FRAME_IA32_H_