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Re: IA64 division code patch with data flow bug in -fweb optimization
- From: Canqun Yang <canqun at yahoo dot com dot cn>
- To: sje at cup dot hp dot com, ebotcazou at libertysurf dot fr, gcc-patches at gcc dot gnu dot org
- Date: Wed, 21 Feb 2007 22:23:36 +0800 (CST)
- Subject: Re: IA64 division code patch with data flow bug in -fweb optimization
Hi, all
>
> > +;; Reciprical approximation
> > +
> >
> > The value of operand0 doesn't depend only on operand3, the manual says that it
> > also depends on operand2. The description must reflect that.
> >
> > --
> > Eric Botcazou
>
> Excellent. Thank you very much Eric. I made this change and it is
> looking better on my small test cases. I will try another bootstrap to
> see if I have any other problems.
>
> Steve Ellcey
> sje@cup.hp.com
>
>
I am very instrested in this new implementation of division expanding. Would you please tell me
how to describe the dependence?
Regards
Canqun
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