https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66059
--- Comment #16 from Jonathan Wakely ---
Author: redi
Date: Wed May 17 17:18:07 2017
New Revision: 248163
URL: https://gcc.gnu.org/viewcvs?rev=248163=gcc=rev
Log:
PR libstdc++/66059 optimise _Build_index_tuple
Backport from mainline
2015-11-17
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66059
Jonathan Wakely changed:
What|Removed |Added
Status|NEW |RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66059
--- Comment #14 from rhalbersma ---
Ping to get this merged into the upcoming 5.4 release.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66059
Jonathan Wakely changed:
What|Removed |Added
CC||wmhkebe at gmail dot com
--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66059
--- Comment #10 from Jonathan Wakely ---
(In reply to Adrian Wielgosik from comment #9)
> TOTAL : 0.97 0.01 0.99
> 119627 kB
By passing in the length of the first sequence instead of using
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66059
--- Comment #11 from Jonathan Wakely ---
(In reply to Jonathan Wakely from comment #7)
> The version I came up with is very close to Xeo's at stackoverflow. I tried
> something more like yours and it used a LOT more memory.
>
> Here's what I
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66059
Adrian Wielgosik changed:
What|Removed |Added
CC||adrian.wielgosik at gmail dot
com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66059
--- Comment #12 from Jonathan Wakely ---
I've opened PR 68422 for the sizeof... inefficiency.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66059
--- Comment #4 from Jonathan Wakely ---
I already have a better make_integer_sequence, but have been trying to write an
intrinsic.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66059
--- Comment #7 from Jonathan Wakely ---
(In reply to Daniel Frey from comment #3)
> A better O(log N) library-only solution than the linked one is available at
> https://github.com/taocpp/sequences/blob/master/include/tao/seq/
>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66059
--- Comment #8 from Daniel Frey ---
(In reply to Jonathan Wakely from comment #7)
> (In reply to Daniel Frey from comment #3)
> > A better O(log N) library-only solution than the linked one is available at
> >
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66059
--- Comment #5 from Jonathan Wakely ---
Fixed on trunk
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66059
--- Comment #6 from Jonathan Wakely ---
Author: redi
Date: Tue Nov 17 19:54:33 2015
New Revision: 230496
URL: https://gcc.gnu.org/viewcvs?rev=230496=gcc=rev
Log:
PR libstdc++/66059 optimise _Build_index_tuple
PR libstdc++/66059
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66059
--- Comment #2 from rhalbersma ---
Apparently VC and Clang have compiler hooks for this:
https://www.reddit.com/r/cpp/comments/3t0nrc/true_story_efficient_packing_tales_of_c/cx26s02
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66059
Daniel Frey changed:
What|Removed |Added
CC||d.frey at gmx dot de
--- Comment #3 from
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66059
Jonathan Wakely redi at gcc dot gnu.org changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
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