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From: "tnfchris at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/113163] [14 Regression][GCN] ICE in vect_peel_nonlinear_iv_init, at tree-vect-loop.cc:9420
Date: Thu, 28 Dec 2023 14:20:05 +0000 [thread overview]
Message-ID: <bug-113163-4-8drEKDBCu9@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-113163-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113163
Tamar Christina <tnfchris at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |ASSIGNED
Priority|P3 |P1
Last reconfirmed| |2023-12-28
Assignee|unassigned at gcc dot gnu.org |tnfchris at gcc dot gnu.org
--- Comment #7 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
ok, managed to reproduce using a cross cc1.
This seems to happen because the vectorizer decides to use partial vectors to
vectorize the loop and the target picks a nonlinear induction step which we
can't support for early breaks.
The attached patch fixes it by rejecting these kind of inductions when partial
vectors are forced.
I'll submit the patch for when maintainers are back from holidays.
next prev parent reply other threads:[~2023-12-28 14:20 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-28 11:37 [Bug middle-end/113163] New: " burnus at gcc dot gnu.org
2023-12-28 11:53 ` [Bug middle-end/113163] " tnfchris at gcc dot gnu.org
2023-12-28 12:20 ` burnus at gcc dot gnu.org
2023-12-28 12:22 ` tnfchris at gcc dot gnu.org
2023-12-28 12:25 ` tnfchris at gcc dot gnu.org
2023-12-28 12:27 ` burnus at gcc dot gnu.org
2023-12-28 12:30 ` burnus at gcc dot gnu.org
2023-12-28 14:20 ` tnfchris at gcc dot gnu.org [this message]
2023-12-28 14:20 ` tnfchris at gcc dot gnu.org
2023-12-29 14:48 ` tnfchris at gcc dot gnu.org
2023-12-29 21:06 ` tnfchris at gcc dot gnu.org
2024-01-02 11:29 ` ams at gcc dot gnu.org
2024-01-02 11:35 ` tnfchris at gcc dot gnu.org
2024-01-06 6:14 ` pinskia at gcc dot gnu.org
2024-01-09 11:18 ` cvs-commit at gcc dot gnu.org
2024-01-09 11:25 ` tnfchris at gcc dot gnu.org
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