To: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Re: Support for 486?
From: alane AT wozzle DOT linet DOT org (J. Alan Eldridge)
Date: Thu, 14 Jan 93 08:13:01 EST
Organization: Disorganization

src4src!mcdhup!rutgers!pt.hk-r.se!pt90ob (Ola Brahammar) writes:

> 
> Does gcc support the 486 processor (except for backward compatibillity) ?
> If not (which i assume), would it be difficult to make it so ?

In what sense?

It has a code-gen switch that tells the optimizer to create code
optimized for a 486. Please note that this code may run at a
significant penalty when running on a 386, due to internal pipelining
differences, etc.

Personally, I compile cc1 and cc1plus for myself with 486 code gen.
Your mileage may vary.

When in doubt, stick with 386 optimizations... that way, you make
an executable that won't run terribly on a 386, just won't run as
fast as it could on a 486.


alane AT wozzle DOT linet DOT org (J. Alan Eldridge)
Fido: The University of Walamaloo 1:272/38.473