Fix calls of strict mode function with an implicit receiver.

src/code-stubs.h

 // Copyright 2011 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 712 matching lines @@
   void Print() {
     PrintF("CallFunctionStub (args %d, in_loop %d, flags %d)\n",
            argc_,
            static_cast<int>(in_loop_),
            static_cast<int>(flags_));
   }
 #endif
 
   // Minor key encoding in 32 bits with Bitfield <Type, shift, size>.
   class InLoopBits: public BitField<InLoopFlag, 0, 1> {};
-  class FlagBits: public BitField<CallFunctionFlags, 1, 1> {};
-  class ArgcBits: public BitField<int, 2, 32 - 2> {};
+  class FlagBits: public BitField<CallFunctionFlags, 1, 2> {};
+  class ArgcBits: public BitField<int, 3, 32 - 3> {};
 
   Major MajorKey() { return CallFunction; }
   int MinorKey() {
     // Encode the parameters in a unique 32 bit value.
     return InLoopBits::encode(in_loop_)
            | FlagBits::encode(flags_)
            | ArgcBits::encode(argc_);
   }
 
   InLoopFlag InLoop() { return in_loop_; }
+
   bool ReceiverMightBeValue() {
     return (flags_ & RECEIVER_MIGHT_BE_VALUE) != 0;
   }
+
+  bool NonValueReceiverMightBeImplicit() {
+    return (flags_ & NON_VALUE_RECEIVER_MIGHT_BE_IMPLICIT) != 0;
+  }
 };
 
 
 enum StringIndexFlags {
   // Accepts smis or heap numbers.
   STRING_INDEX_IS_NUMBER,
 
   // Accepts smis or heap numbers that are valid array indices
   // (ECMA-262 15.4). Invalid indices are reported as being out of
   // range.
@@ skipping 160 matching lines @@
  private:
   MacroAssembler* masm_;
   bool previous_allow_;
 
   DISALLOW_COPY_AND_ASSIGN(AllowStubCallsScope);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_CODE_STUBS_H_