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Re: what cflag/march to use for intel core duo l2400?
- From: Tim Prince <timothyprince at sbcglobal dot net>
- To: George Nychis <gnychis at cmu dot edu>
- Cc: tprince at myrealbox dot com, gcc-help at gcc dot gnu dot org
- Date: Thu, 08 Jun 2006 18:49:01 -0700
- Subject: Re: what cflag/march to use for intel core duo l2400?
- References: <448798B5.1050302@cmu.edu> <4487A48A.4050606@sbcglobal.net> <4488C1B3.6060901@cmu.edu>
- Reply-to: tprince at myrealbox dot com
George Nychis wrote:
I'd prefer sticking to gcc-4.1
So, this person has a pentium m, and /proc/cpu info says his processor
belongs to family 6... as you can see, mine also belongs to family 6...
so even though the wiki stages march=prescott, what do you guys think?
-march=pentium-m prefers x87 over sse scalar code, because pentium-m can
decode sse at only half the rate of x87. You should see the speed
advantage clearly on pentium-m, presumably not on Core Duo.