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From: "linkw at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/94043] [9/10 Regression] ICE in superloop_at_depth, at cfgloop.c:78
Date: Thu, 26 Mar 2020 08:54:43 +0000 [thread overview]
Message-ID: <bug-94043-4-Z7bKc4NQ7X@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-94043-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94043
--- Comment #14 from Kewen Lin <linkw at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #13)
>
> + /* Find all SSA NAMEs in stmts which is defined in current loop,
> create
> + PHIs for them, and replace them with phi results accordingly. */
> + for (gsi = gsi_start (stmts); !gsi_end_p (gsi); gsi_next (&gsi))
> + {
> + gimple *stmt = gsi_stmt (gsi);
> + update_stmt (stmt);
> +
> ...
>
> should not be necessary. What's missing in your patch is that when the
> current code has computed vec_lhs it needs to create a LC PHI node for it
> _before_ computing the lane extraction and instead use vec_lhs' there.
OK, I was thinking the mask for LOOP_VINFO_FULLY_MASKED_P part is probably a
SSA name and can live out, as your comments, it looks impossible. Will update
it and send for review after testing. Thanks again!
next prev parent reply other threads:[~2020-03-26 8:54 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-94043-4@http.gcc.gnu.org/bugzilla/>
2020-03-12 11:58 ` jakub at gcc dot gnu.org
2020-03-17 14:36 ` marxin at gcc dot gnu.org
2020-03-18 2:49 ` linkw at gcc dot gnu.org
2020-03-20 2:56 ` linkw at gcc dot gnu.org
2020-03-20 7:06 ` rguenther at suse dot de
2020-03-20 7:14 ` linkw at gcc dot gnu.org
2020-03-20 7:22 ` rguenther at suse dot de
2020-03-22 8:39 ` linkw at gcc dot gnu.org
2020-03-23 13:21 ` rguenth at gcc dot gnu.org
2020-03-24 2:59 ` linkw at gcc dot gnu.org
2020-03-24 6:44 ` rguenther at suse dot de
2020-03-26 2:45 ` linkw at gcc dot gnu.org
2020-03-26 8:26 ` rguenth at gcc dot gnu.org
2020-03-26 8:54 ` linkw at gcc dot gnu.org [this message]
2020-03-26 9:05 ` rguenther at suse dot de
2020-03-26 12:56 ` linkw at gcc dot gnu.org
2020-03-26 13:36 ` rguenth at gcc dot gnu.org
2020-04-01 5:24 ` cvs-commit at gcc dot gnu.org
2020-04-01 6:44 ` linkw at gcc dot gnu.org
2020-04-01 6:56 ` [Bug tree-optimization/94043] [9 " rguenth at gcc dot gnu.org
2020-04-01 7:30 ` linkw at gcc dot gnu.org
2020-04-02 13:21 ` clyon at gcc dot gnu.org
2020-04-17 8:55 ` cvs-commit at gcc dot gnu.org
2020-04-17 9:01 ` linkw at gcc dot gnu.org
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