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From: "amacleod at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/108696] querying relations is slow
Date: Wed, 08 Feb 2023 17:16:17 +0000	[thread overview]
Message-ID: <bug-108696-4-ofyZV43DTM@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-108696-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108696

--- Comment #1 from Andrew Macleod <amacleod at redhat dot com> ---
I think that change will end up missing equivalences and transitives.  The
m_relation_set bitmap is only used to track non-equivalence relations
registered with the oracle. Equivalences are handled separately in the
equivalence oracle.

The speedup you are seeing is likely because it is bailing on checking for
equivalences and transitive relations through equivalences.

  reply	other threads:[~2023-02-08 17:16 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-07 13:00 [Bug tree-optimization/108696] New: " rguenth at gcc dot gnu.org
2023-02-08 17:16 ` amacleod at redhat dot com [this message]
2023-02-08 17:50 ` [Bug tree-optimization/108696] " amacleod at redhat dot com
2023-02-08 18:01 ` rguenther at suse dot de
2023-02-10  8:38 ` rguenth at gcc dot gnu.org
2023-02-10 14:53 ` amacleod at redhat dot com

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