Date: Mon, 10 Aug 1998 16:51:02 +0300 (IDT)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
To: D DOT J DOT Eleveld AT anest DOT azg DOT nl
cc: djgpp AT delorie DOT com
Subject: Re: How safe is the -march=pentium flag?
In-Reply-To: <6qmqma$mcp$1@nnrp1.dejanews.com>
Message-ID: <Pine.SUN.3.91.980810164925.4349A-100000@is>
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On Mon, 10 Aug 1998 D DOT J DOT Eleveld AT anest DOT azg DOT nl wrote:

> I've just been playing with the -march flags and found a huge speed increase
> when I used -march=pentuim.

How huge is ``huge''?  Can you give some numbers?

> Does anyone know of any gotcha's with using -march=pentium flags?

AFAIK, it uses instructions that only exist on a Pentium, and so such a 
program will crash with SIGILL on anything below a Pentium.