Add an IC for CompareNil operations

src/log.cc

 // 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 1571 matching lines @@
     Code* code_object = Code::cast(object);
     LogEventsAndTags tag = Logger::STUB_TAG;
     const char* description = "Unknown code from the snapshot";
     switch (code_object->kind()) {
       case Code::FUNCTION:
       case Code::OPTIMIZED_FUNCTION:
         return;  // We log this later using LogCompiledFunctions.
       case Code::UNARY_OP_IC:   // fall through
       case Code::BINARY_OP_IC:   // fall through
       case Code::COMPARE_IC:  // fall through
+      case Code::COMPARE_NIL_IC:   // fall through
       case Code::TO_BOOLEAN_IC:  // fall through
       case Code::STUB:
         description =
             CodeStub::MajorName(CodeStub::GetMajorKey(code_object), true);
         if (description == NULL)
           description = "A stub from the snapshot";
         tag = Logger::STUB_TAG;
         break;
       case Code::BUILTIN:
         description = "A builtin from the snapshot";
@@ skipping 290 matching lines @@
     profiler_ = NULL;
   }
 
   delete ticker_;
   ticker_ = NULL;
 
   return log_->Close();
 }
 
 } }  // namespace v8::internal