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Re: An unusual Performance approach using Synthetic registers, and a request for guidance.

From: Andy Walker <ja_walker at earthlink dot net>
To: "Bonzini" <bonzini at gnu dot org>,<gcc at gcc dot gnu dot org>
Date: Sun, 29 Dec 2002 11:31:31 -0600
Subject: Re: An unusual Performance approach using Synthetic registers, and a request for guidance.
References: <000701c2ad9e$a85adbc0$ec111897@bonz> <E18SV9r-0007DL-00@grebe.mail.pas.earthlink.net> <000901c2af1f$59a1d420$811b1897@bonz>

Yes, I agree.  Thank you.

Andy

On Sunday 29 December 2002 03:47 am, Bonzini wrote:
> > Orthogonality?  I am sorry.  I do not understand.  Could you be a bit
> > more descriptive?
>
> The lack of memory-to-memory move instructions, for example.  Synthetic
> registers would have to be moved inside the core to do arithmetic on them.
> It's already a problem not to have three-operand math, synthetic registers
> would make the x86 basically an accumulator-based chip (move from reg to
> accumulator, sum accumulator to reg) and also limit the ability to use LEA
> to do arithmetics.
>
> Paolo

References:
- Re: An unusual Performance approach using Synthetic registers, and a request for guidance.
  - From: Bonzini
- Re: An unusual Performance approach using Synthetic registers, and a request for guidance.
  - From: Andy Walker
- Re: An unusual Performance approach using Synthetic registers, and a request for guidance.
  - From: Bonzini

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