https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39326
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2019-03-05 00:00:00 |2024-2-20
--- Comment #62 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #61)
> r12-7592, first testcase, x86_64:
>
> -O0: 6s, 1GB
>
> -O1: 264s, 1.4GB
>
> callgraph ipa passes : 30.47 ( 12%)
> alias stmt walking : 67.44 ( 26%)
> tree loop invariant motion : 120.86 ( 46%)
>
> -O2: 1383s, 11.8GB
>
> alias stmt walking : 174.01 ( 13%)
> tree PRE : 87.85 ( 6%)
> tree loop invariant motion : 130.54 ( 9%)
> tree slp vectorization : 100.01 ( 7%)
> PRE : 716.64 ( 52%)
>
> quite some regression on the peak memory usage side here.
r14-9064
-O2: 683s, 5GB
alias stmt walking : 95.35 ( 14%)
tree PRE : 58.27 ( 9%)
tree loop invariant motion : 75.47 ( 11%)
PRE : 335.15 ( 49%)
so improvements on the memory usage side. -O1 didn't change.
