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Re: instruction ordering
- From: "John (Eljay) Love-Jensen" <eljay at adobe dot com>
- To: Segher Boessenkool <segher at kernel dot crashing dot org>
- Cc: "marian at jozep dot com dot au" <marian at jozep dot com dot au>, GCC-help <gcc-help at gcc dot gnu dot org>
- Date: Thu, 7 May 2009 11:51:31 -0700
- Subject: Re: instruction ordering
Hi Segher,
>> You mean -mcpu= .
Eljay said previously...
> I thought -mcpu was a deprecated synonym for -mtune.
>
> Whereas -march implies -mtune, but is not a synonym for -mtune.
>
> My understanding may be out of date.
http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Option-Summary.html
It appears that -m options can vary greatly by hardware model and
configurations. Some may use -mcpu, some -march, some -mtune, and others
may use entirely different -m switches.
I stand corrected.
Thanks,
--Eljay
PS to Tim: :-)