https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106514
--- Comment #11 from Richard Biener ---
(In reply to Richard Biener from comment #10)
> Re-confirmed. =15 vs =30 goes from
>
> backwards jump threading : 0.58 ( 13%)
>
> to
>
> backwards jump threading : 7.00 ( 65%)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106514
--- Comment #10 from Richard Biener ---
Re-confirmed. =15 vs =30 goes from
backwards jump threading : 0.58 ( 13%)
to
backwards jump threading : 7.00 ( 65%)
so it still shows exponential behavior for CFGs like
if
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106514
Richard Biener changed:
What|Removed |Added
Target Milestone|12.2|12.3
--- Comment #9 from Richard Biene
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106514
--- Comment #8 from CVS Commits ---
The master branch has been updated by Richard Biener :
https://gcc.gnu.org/g:16b013c9d9b4d950f89821476e791bf18c1295df
commit r13-2020-g16b013c9d9b4d950f89821476e791bf18c1295df
Author: Richard Biener
Date:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106514
Richard Biener changed:
What|Removed |Added
Last reconfirmed||2022-08-10
Ever confirmed|0
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106514
--- Comment #7 from Richard Biener ---
For the testcase m_imports is so big because we have
...
[local count: 1073741824]:
# c_1198 = PHI
_599 = MEM[(unsigned int *)b_1201(D) + 2792B];
d_2401 = _599 + d_2399;
if (d_2399 > d_2401)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106514
--- Comment #6 from Richard Biener ---
So one now needs to bump the limit to 60 to get enough samples for perf. Then
we now see
Samples: 55K of event 'cycles:u', Event count (approx.): 49013411833
Overhead Samples Command S
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106514
--- Comment #5 from CVS Commits ---
The master branch has been updated by Richard Biener :
https://gcc.gnu.org/g:409978d58dafa689c5b3f85013e2786526160f2c
commit r13-1998-g409978d58dafa689c5b3f85013e2786526160f2c
Author: Richard Biener
Date:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106514
--- Comment #4 from CVS Commits ---
The master branch has been updated by Aldy Hernandez :
https://gcc.gnu.org/g:47964e766270f349f5b171bcd68ff7c1e60d85d8
commit r13-1973-g47964e766270f349f5b171bcd68ff7c1e60d85d8
Author: Aldy Hernandez
Date:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106514
--- Comment #3 from CVS Commits ---
The master branch has been updated by Andrew Macleod :
https://gcc.gnu.org/g:8e34d92ef29a175b84cc7f5185db43656ae762bb
commit r13-1965-g8e34d92ef29a175b84cc7f5185db43656ae762bb
Author: Andrew MacLeod
Date:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106514
--- Comment #2 from CVS Commits ---
The master branch has been updated by Andrew Macleod :
https://gcc.gnu.org/g:19ffb35d17474bb4dd3eb78963c28d10b5362321
commit r13-1952-g19ffb35d17474bb4dd3eb78963c28d10b5362321
Author: Andrew MacLeod
Date:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106514
--- Comment #1 from Andrew Macleod ---
(In reply to Richard Biener from comment #0)
>
> Part of the sub-optimality is probably the equiv chain becoming very long
> (can we simply limit that?) and clearing bits in all the very many
> bitmaps li
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106514
Richard Biener changed:
What|Removed |Added
Target Milestone|--- |12.2
CC|
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