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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/97623] [9/10 Regression] Extremely slow O2 compile (>>O(n^2))
Date: Mon, 11 Jan 2021 13:37:38 +0000 [thread overview]
Message-ID: <bug-97623-4-y4z7CgYVFH@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-97623-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97623
--- Comment #22 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:
https://gcc.gnu.org/g:eddcb627ccfbd97e025cf366cc3f3bad76211785
commit r10-9246-geddcb627ccfbd97e025cf366cc3f3bad76211785
Author: Richard Biener <rguenther@suse.de>
Date: Tue Nov 3 15:03:41 2020 +0100
tree-optimization/97623 - Avoid PRE hoist insertion iteration
We are not really interested in PRE opportunities exposed by
hoisting but only the other way around. So this moves hoist
insertion after PRE iteration finished and removes hoist
insertion iteration alltogether.
It also guards access to NEW_SETS properly.
2020-11-11 Richard Biener <rguenther@suse.de>
PR tree-optimization/97623
* tree-ssa-pre.c (insert): Move hoist insertion after PRE
insertion iteration and do not iterate it.
(create_expression_by_pieces): Guard NEW_SETS access.
(insert_into_preds_of_block): Likewise.
* gcc.dg/tree-ssa/ssa-hoist-3.c: Adjust.
* gcc.dg/tree-ssa/ssa-hoist-7.c: Likewise.
* gcc.dg/tree-ssa/ssa-pre-30.c: Likewise.
next prev parent reply other threads:[~2021-01-11 13:37 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-29 2:02 [Bug c++/97623] New: " wsnyder at wsnyder dot org
2020-10-29 2:03 ` [Bug c++/97623] " wsnyder at wsnyder dot org
2020-10-29 7:17 ` [Bug tree-optimization/97623] [9/10/11 Regression] " rguenth at gcc dot gnu.org
2020-10-29 7:18 ` rguenth at gcc dot gnu.org
2020-10-30 12:35 ` rguenth at gcc dot gnu.org
2020-10-30 12:35 ` rguenth at gcc dot gnu.org
2020-10-30 13:25 ` cvs-commit at gcc dot gnu.org
2020-10-30 13:28 ` rguenth at gcc dot gnu.org
2020-10-30 13:55 ` wsnyder at wsnyder dot org
2020-11-03 14:16 ` rguenth at gcc dot gnu.org
2020-11-03 15:23 ` cvs-commit at gcc dot gnu.org
2020-11-06 1:50 ` wsnyder at wsnyder dot org
2020-11-06 9:52 ` rguenther at suse dot de
2020-11-06 12:37 ` wsnyder at wsnyder dot org
2020-11-06 13:00 ` rguenth at gcc dot gnu.org
2020-11-06 13:19 ` marxin at gcc dot gnu.org
2020-11-06 13:28 ` rguenth at gcc dot gnu.org
2020-11-06 13:45 ` rguenth at gcc dot gnu.org
2020-11-11 11:51 ` cvs-commit at gcc dot gnu.org
2020-11-11 16:11 ` tschwinge at gcc dot gnu.org
2020-11-11 17:17 ` cvs-commit at gcc dot gnu.org
2020-12-07 13:03 ` [Bug tree-optimization/97623] [9/10 " rguenth at gcc dot gnu.org
2021-01-11 13:37 ` cvs-commit at gcc dot gnu.org
2021-01-11 13:37 ` cvs-commit at gcc dot gnu.org [this message]
2021-01-11 13:39 ` [Bug tree-optimization/97623] [9 " rguenth at gcc dot gnu.org
2021-06-01 8:18 ` rguenth at gcc dot gnu.org
2022-05-27 8:56 ` rguenth at gcc dot gnu.org
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