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Building for K6-2 CPU: i586 or i686?
- To: <gcc at gcc dot gnu dot org>
- Subject: Building for K6-2 CPU: i586 or i686?
- From: steve dot snyder at philips dot com
- Date: Tue, 19 Jun 2001 16:23:21 -0500
Hello.
Which compiler option generates better code for the AMD K6-2 CPU,
-march=i586 or -march=i686?
Please don't rub salt into my wounds by suggesting "-march=k6" as the way
to go. I want the code to actually *run* after it's compiled. (See
PR2676 in GNATS ("Illegal loop instruction when using -O2 -march=k6" as
well as post http://gcc.gnu.org/ml/gcc/2001-06/msg01058.html.)
Thank you.