[Bug middle-end/77484] [6/7 Regression] Static branch predictor causes ~6-8% regression of SPEC2000 GAP

[hubicka at ucw dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77484

--- Comment #28 from Jan Hubicka <hubicka at ucw dot cz> ---
> On SPEC2000 the latest changes look good, compared to the old predictor gap
> improved by 10% and INT/FP by 0.8%/0.6%. I'll run SPEC2006 tonight.

It is rather surprising you are seeing such large changes for one branch
predictor
change.  Is most of it really comming just from the bb-reorder changes? On x86
the
effect is mostly within noise and on Itanium Gap improve by 2-3%.
It may be interesting to experiment with reorderin and prediction more on this
target.

Honza