* compile.c (iseq_compile_each): check
  iseq->compile_data->option->specialized_instruction for opt_* insn.
* test/ruby/test_iseq.rb: check no specialized_instructions option.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48870 b2dd03c8-39d4-4d8f-98ff-823fe69b080e