MIPS: Fix loading the global receiver.

src/mips/lithium-codegen-mips.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 3362 matching lines @@
   DeoptimizeIf(eq, instr->environment(), scratch, Operand(zero_reg));
 
   __ GetObjectType(receiver, scratch, scratch);
   DeoptimizeIf(lt, instr->environment(),
                scratch, Operand(FIRST_SPEC_OBJECT_TYPE));
   __ Branch(&result_in_receiver);
 
   __ bind(&global_object);
   __ lw(receiver, FieldMemOperand(function, JSFunction::kContextOffset));
   __ lw(receiver,
-        ContextOperand(receiver,
-                       Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX)));
+        ContextOperand(receiver, Context::GLOBAL_OBJECT_INDEX));
   __ lw(receiver,
         FieldMemOperand(receiver, GlobalObject::kGlobalReceiverOffset));
 
   if (result.is(receiver)) {
     __ bind(&result_in_receiver);
   } else {
     Label result_ok;
     __ Branch(&result_ok);
     __ bind(&result_in_receiver);
     __ mov(result, receiver);
@@ skipping 2421 matching lines @@
   __ Subu(scratch, result, scratch);
   __ lw(result, FieldMemOperand(scratch,
                                 FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal