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Re: S/390: -march= and -mcpu= options
- From: Richard Henderson <rth at redhat dot com>
- To: David Edelsohn <dje at watson dot ibm dot com>
- Cc: Daniel Jacobowitz <drow at mvista dot com>, Ulrich Weigand <weigand at immd1 dot informatik dot uni-erlangen dot de>, hpenner at de dot ibm dot com, gcc-patches at gcc dot gnu dot org
- Date: Mon, 23 Dec 2002 22:27:03 -0800
- Subject: Re: S/390: -march= and -mcpu= options
- References: <20021224042633.GA15559@nevyn.them.org> <200212240452.XAA08692@makai.watson.ibm.com>
On Mon, Dec 23, 2002 at 11:52:52PM -0500, David Edelsohn wrote:
> -march: arm, cris, i386, mips
> -mcpu: alpha, arc, arm, c4x, cris, frv, h8300, i386, rs6000, s390, sparc
> -mtune: alpha, arm, cris, mips, rs6000, sparc
>
> I would not consider the current Mips port in the FSF sources to
> be a good precedent for GCC ports.
I would.
The reason why I don't like -mcpu is that it has an ambiguous history.
It means one thing on x86 and another on sparc. Given this history,
it does us no good whatsoever to keep it around in any form.
IMO -march/-mtune are sufficient.
r~