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Re: Default settings of arch and cpu on ix86

To: Andreas Jaeger <aj at arthur dot rhein-neckar dot de>
Subject: Re: Default settings of arch and cpu on ix86
From: Richard Henderson <rth at cygnus dot com>
Date: Tue, 8 Jun 1999 01:07:11 -0700
Cc: egcs-patches at egcs dot cygnus dot com
References: <u81zfoec7y.fsf@arthur.rhein-neckar.de> <19990607135417.D6031@cygnus.com> <u8yahvi2ox.fsf@arthur.rhein-neckar.de>

On Tue, Jun 08, 1999 at 09:14:38AM +0200, Andreas Jaeger wrote:
> But this might change.  The pentium and i486 have opcodes that aren't
> supported on i386.

Yes.  The only one remotely useful to the compiler is bswap --
supposing we ever add bits to auto-recognize byte swapping.

We should probably for that reason explicitly make the default
arch i386.  That's not to say that we shouldn't leave the default
tuning to pentium.

r~

References:
- Default settings of arch and cpu on ix86
  - From: Andreas Jaeger
- Re: Default settings of arch and cpu on ix86
  - From: Richard Henderson
- Re: Default settings of arch and cpu on ix86
  - From: Andreas Jaeger

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