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Re: Optimal Optimizations: A Very Preliminary Report
Nathanael Nerode wrote:
Is there a way to set the default optimizations differently on a
per-architecture basis? If there isn't, should there be? ;-)
Yes, there should. Assuming, of course, that someone from each
architecture has a clear idea of how various options affect their
platform. Discovering this information is part of the motivation for my
My testing is ia32-based; I'm also starting test runs on my ultraSPARC;
preliminary runs suggest the its optimization characteristics differ
from those of the Pentium 3 and 4 systems at my disposal.
The GCCGA testing harness is nearly finished for an initial release; I'm
encapsulating machine and version characteristics into a set of classes
to ease porting to various architectures and languages. I'll spend the
next couple of days getting the code in order for general release; then
others can try it on their systems, and we can compare results.
Scott Robert Ladd
Coyote Gulch Productions (http://www.coyotegulch.com)
Software Invention for High-Performance Computing