On Wed, 19 Jan 2005, Joseph D. Wagner wrote:
This is not accurate. gcc has two separate sets of optimizations. The first (mtune) tunes everything except the ABI. This is the part that is optimized for the Pentium 4. The second (march) actually tunes the ABI. The second is optimized for 386. In other words, it won't take advantage of any instruction that didn't exist on the original 386.
We know this, but the present compile settings still are just fine. Please go read the archives! :)
Best, -- Elliot