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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/100221] Takes two passes at DSE to remove some dead stores
Date: Tue, 24 May 2022 06:20:50 +0000 [thread overview]
Message-ID: <bug-100221-4-UAA9H9zVRY@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-100221-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100221
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:
https://gcc.gnu.org/g:1adf11822bd48f4d65156b7642514630c08c4d00
commit r13-723-g1adf11822bd48f4d65156b7642514630c08c4d00
Author: Richard Biener <rguenther@suse.de>
Date: Fri May 20 12:24:40 2022 +0200
tree-optimization/100221 - improve DSE a bit
When facing multiple PHI defs and one feeding the other we can
postpone processing uses of one and thus can proceed.
2022-05-20 Richard Biener <rguenther@suse.de>
PR tree-optimization/100221
* tree-ssa-dse.cc (contains_phi_arg): New function.
(dse_classify_store): Postpone PHI defs that feed another PHI in
defs.
* gcc.dg/tree-ssa/ssa-dse-44.c: New testcase.
* gcc.dg/tree-ssa/ssa-dse-45.c: Likewise.
next prev parent reply other threads:[~2022-05-24 6:20 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-22 20:07 [Bug tree-optimization/100221] New: missed optimization for dead code elimination at -O3 (vs. -O1, -Os, -O2) zhendong.su at inf dot ethz.ch
2021-09-25 10:54 ` [Bug tree-optimization/100221] " pinskia at gcc dot gnu.org
2021-12-16 4:35 ` pinskia at gcc dot gnu.org
2021-12-16 4:50 ` [Bug tree-optimization/100221] Takes two passes at DSE to remove some dead stores pinskia at gcc dot gnu.org
2021-12-16 4:50 ` pinskia at gcc dot gnu.org
2022-01-11 10:16 ` rguenth at gcc dot gnu.org
2022-01-11 11:04 ` rguenth at gcc dot gnu.org
2022-01-11 11:04 ` rguenth at gcc dot gnu.org
2022-01-11 11:05 ` rguenth at gcc dot gnu.org
2022-05-24 6:20 ` cvs-commit at gcc dot gnu.org [this message]
2022-05-24 6:21 ` rguenth at gcc dot gnu.org
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