[PATCH] Tweaks for constant-equality-comparisons in BPI

[Hal Finkel]

----- Original Message -----
> 
> On 28 October 2013 14:42, Renato Golin < renato.golin at linaro.org >
> wrote:
> 
> I'll check the test-suite and others on my Chromebook and will get
> back to you.
> 
> 
> I haven't done much, with Connect and all, but the little I did had
> no noticeable difference.
> 
> 
> I'd be interested in knowing if there's anything that will benefit
> (or even suffer) from this change.

It looks like I'm seeing a statistically-significant 1% speedup in MultiSource/Applications/sqlite3/sqlite3 on the PPC A2 from the (x == -1) heuristic (currently based on 10 test-suite runs; 5 with the heuristic, 5 without), with no significant regressions. I've not yet tested the power-of-two heuristic.

 -Hal

> 
> 
> cheers,
> --renato

-- 
Hal Finkel
Assistant Computational Scientist
Leadership Computing Facility
Argonne National Laboratory