https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68600
--- Comment #13 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #12)
> (In reply to Jerry DeLisle from comment #11)
---snip--
>
> May I suggest reading the docs? ;-)
>
--- snip ---
> The default value for N is the value specified for
> `-fblas-matmul-limit' if this option is specified, or unlimitited
> otherwise.
Oh gosh!, Sorry about that Thomas. I just did not see it. And I was even
looking for it because I thought it was there! This is excellent because I am
working on a modification to the run-time libraries. This will give us
something like:
====================================
Matmul
fixed
Size Loops explicit NewMatmul
====================================
16 2000 1.496 1.719
32 2000 2.427 1.784
64 2000 1.343 1.967
128 2000 1.657 2.113
256 477 2.660 2.185
512 59 2.027 2.195
1024 7 1.530 2.208
2048 1 1.516 2.210
On this particular machine, the inlining at high levels of optimization has
some sweet spots at size of 32 x 32 for example, so allowing the tuning is
essential depending on users application.
