https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82362
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-*-*, i?86-*-*
Status|UNCONFIRMED |NEW
Last reconfirmed|2017-09-30 00:00:00 |2017-10-02
Component|middle-end |fortran
Ever confirmed|0 |1
Severity|normal |enhancement
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think the Fortran FE could help with using alloca-with-align with larger
alignment (maybe using BIGGEST_ALIGNMENT, I see really no good reason for
using sth as large as 64 bytes by default, so yes, for this we'd need an
option that amends -fstack-arrays).
But that Fortran part isn't really a regression.
> Comparing performance for particular 7-runs
> (relative to median performance of r251711):
> r251711: 92,8% 92,9% 93,0% 106,7% 107,0% 107,0% 107,2%
> r251713: 99,5% 99,6% 99,8% 100,0% 100,3% 100,6% 100,6%
I suppose you swapped the revs here as here r251713 looks more stable.
The median looks unchanged here so the regression would be the instability.
