Re: Bug#198158: architecture i386 isn't i386 anymore
On Sun, 2003-06-22 at 00:48, Adam Majer wrote:
> I once read somewhere that you should _never_ compile in 486
> optimizations for use in processors other than the 486. Apparently
> since 486 optimized code is padded a lot with NOPs.
>
> Apparently you are much better off on a Pentium or Athlon with
> i386 optimized code than i486 optimized one.
>
>
> Hence if we are going to migrate from i386, we should not
> go to CPU like i486 and just move to a Pentium Classic
> code (i586).
You're forgetting that we can actually have it both ways; we compile
with -march=i486 (or i586), and -mcpu=i686.
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