On Thu, Aug 13, 2015 at 3:32 AM, Abe <abe_skol...@yahoo.com> wrote: > Dear all, > > Overall, I think the WIP new if converter is holding up > relatively well, but there is obviously opportunity to do better, > at least if the numbers mean what they look like they mean, > i.e. the old converter`s code was fully OK and so is the new one`s. > By "fully OK" I mean e.g. no crashing bugs were introduced by the > conversion. > > > In the following, all the integers over 1000 are loops-vectorized counts. > > > "base": baseline compiler source code > Git hash: cb791e75379bc0c8b10bd13bcb24305c36fd504b > commit date: July 10 2015 > committer: Richard > > "new": base + patches for new [GIMPLE-level] if converter > > > > -O3 > === > > no special flags > ---------------- > base: 5951 > new: 5956 > > with only "-ftree-loop-if-convert" added
That is -ftree-loop-if-convert-stores? > ---------------------------------------- > base: 5954 > new: 5956 > > with both if-conversion flags added What's the other if-conversion flag? I suppose _this_ is -ftree-loop-if-convert-stores? That would match the numbers above which are mostly identical because -O3/-Ofast already enable -ftree-loop-if-convert by means of enabling vectorization. > ----------------------------------- > base: 5970 > new: 5956 > > > > -Ofast > ====== > > no special flags > ---------------- > base: 7393 > new: 7401 > > with only "-ftree-loop-if-convert" added > ---------------------------------------- > base: 7393 > new: 7401 > > with both if-conversion flags added > ----------------------------------- > base: 7421 > new: 7401 > Can you please post individual benchmark numbers instead of just the overall score? >From the numbers above I can see the new if-converter removes any improvement we get from -ftree-loop-if-convert-stores (as expected - it's not a vectorization enabler with the new scheme). Thanks, Richard. > > I have a spreadsheet [and a PDF generated therefrom] that shows the above in > a > more visual format. Please feel free to ask for the PDF as an email > attachment. > > > Regards, > > Abe > >
