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Re: [RFC] Fix PR rtl-optimization/27616

Eric Botcazou <ebotcazou@libertysurf.fr> writes:

> > While this is obviously a very unusual test case, I think that you
> > have set the cap much too high.  I can't imagine a case which would
> > successfully simplify after even four recursive calls to fold_rtx_mem.
> 
> Where do you draw the 4 from?  I see no theoritical limit to the scheme, just 
> chain
> 
>   set (reg[n+1])
>       (plus (reg)
>             (mem (plus (reg[n]) (const_int))))
> 
> and stop somewhere.

I'm sure I'm missing something, but if that comes from real code, then
how is it going to simplify?

Ian
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