From: "Marcin Mielżyński" <lopx@...>
Date: 2008-04-01T21:00:09+09:00
Subject: Re: Why Ruby do not optimize code at all?

ts wrote:
> Marcin Mielżyński wrote:
>> It's not a premature optimisation, just unimplemented yet fallback with
>> /* TODO: if some === method is overrided */ comment in the source
>> (insns.def) for opt_case_dispatch specialized instruction (very easy to
>> accomplish having vm_opt_method_table and ruby_vm_redefined_flag).
> 
>  it's a premature optimisation and even worth, in this case, a bug
>  because it's known, at *compile time*, that the method #=== is
>  defined for Symbol, this mean that this optimisation must not exist
>  for Symbol#===
> 

Not true. The instruction itself is responsible for the fallback (just 
not implemented yet).

lopex