On Tue, 2004-11-30 at 12:05 -0500, William M. Quarles wrote:
performance difference. Now were you saying that this cmov is part
of
i486 or i686?
i686
Would I have to worry about any trademark problems?
?????
Is there a script that Red Hat uses to automate the build process?
Does
it use SRPMS or do the sources and specs have to be "preinstalled?"
srpms; what you can do yourself is install most of the rpms (so that all
buildrequires are met), then get the src.rpm's in one dir and do
for i in *.src.rpm ; do rpmbuild --rebuild --target i686 $i ; done
for a first cut approximation... takes 24 to 36 hours though.
> However, newer ones (both AMD and Intel) operate in such a way
that the
> advantage of this no longer is an advantage, they need to know the
> result anyway in effect (and also make a guess about the "if" result)
Is the advantage still there
not anymore
, or is it just no longer a significant
advantage? Or is it a cost? Unless it's a cost, I don't see what's
on newest P4 cores it seems to be a cost even (given that cmov can't do
all the addressing combinations normal mov can, gcc may have to add some
slight additional glue code which is a cost)
wrong with putting in the advantage, unless it's a lot more work
on your
part. Is it more work?
it means that you don't run on cpus without cmov...