From: Jes Sorensen <jes@linuxcare.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] -ma-step and -mconstant-gp options for gcc?
Date: Thu, 23 Nov 2000 18:57:42 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590678205771@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590678205770@msgid-missing>
>>>>> "Francis" = Francis Galiegue <fg@mandrakesoft.com> writes:
Francis> I wonder what the two options in $subject do... For
Francis> -ma-step, I can guess this assumes that the code will run on
Francis> an A stepping CPU, but in this case, will it run on a B? If I
Francis> want to compile a kernel for a B stepping processor, I guess
Francis> I have to remove this option?
The first one enables workarounds in the compiler so it doesn't
generate code that triggers problems on the A-step's.
The second tells the compiler that the gp is constant so it doesn't
constantly reload it when calling functions. It's used by the kernel.
Jes
next prev parent reply other threads:[~2000-11-23 18:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-11-23 17:45 [Linux-ia64] -ma-step and -mconstant-gp options for gcc? Francis Galiegue
2000-11-23 18:57 ` Jes Sorensen [this message]
2000-11-23 19:47 ` Jim Wilson
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