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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/102285] New flag -ftrivial-auto-var-init=zero causes crash in pr82421.c
Date: Fri, 01 Oct 2021 09:45:53 +0000 [thread overview]
Message-ID: <bug-102285-4-vnUXcdGFAd@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-102285-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102285
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ebotcazou at gcc dot gnu.org,
| |egallager at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org,
| |vries at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=82421
--- Comment #14 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to David Binderman from comment #11)
> (In reply to qinzhao from comment #10)
>
> > 2734 /* The heuristic of fold_builtin_alloca_with_align differs
>
> git blame says:
>
>
> 13e49da934e9 (Tom de Vries 2011-10-07 12:49:49 +0000 2732)
> /* The heuristic of fold_builtin_alloca_with_align differs before and
> 13e49da934e9 (Tom de Vries 2011-10-07 12:49:49 +0000 2733)
> after inlining, so we don't require the arg to be changed into a
> 13e49da934e9 (Tom de Vries 2011-10-07 12:49:49 +0000 2734)
> constant for folding, but just to be constant. */
> 9e878cf1bae7 (Eric Botcazou 2017-10-19 15:58:05 +0000 2735)
> if (gimple_call_builtin_p (stmt, BUILT_IN_ALLOCA_WITH_ALIGN)
> 9e878cf1bae7 (Eric Botcazou 2017-10-19 15:58:05 +0000 2736)
> || gimple_call_builtin_p (stmt, BUILT_IN_ALLOCA_WITH_ALIGN_AND_MAX))
> 1fed1006552c (Tom de Vries 2011-08-31 07:04:25 +0000 2737)
> {
> 13e49da934e9 (Tom de Vries 2011-10-07 12:49:49 +0000 2738)
> tree new_rhs = fold_builtin_alloca_with_align (stmt);
> 5d882cc1dafe (Richard Guenther 2011-09-02 11:53:55 +0000 2739)
> if (new_rhs)
> 5d882cc1dafe (Richard Guenther 2011-09-02 11:53:55 +0000 2740)
> {
> 52a5515ed661 (Richard Biener 2021-04-14 13:40:58 +0200 2741)
> gimplify_and_update_call_from_tree (gsi, new_rhs);
> 2f31f742a693 (Tom de Vries 2011-12-17 11:39:43 +0000 2742)
> tree var = TREE_OPERAND (TREE_OPERAND (new_rhs, 0),0);
> 2f31f742a693 (Tom de Vries 2011-12-17 11:39:43 +0000 2743)
> insert_clobbers_for_var (*gsi, var);
> 5d882cc1dafe (Richard Guenther 2011-09-02 11:53:55 +0000 2744)
> return true;
> 5d882cc1dafe (Richard Guenther 2011-09-02 11:53:55 +0000 2745)
> }
> 1fed1006552c (Tom de Vries 2011-08-31 07:04:25 +0000 2746)
> }
>
> so at least Tom, Eric and Richard have been in there.
cc-ing them
next prev parent reply other threads:[~2021-10-01 9:45 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-10 21:50 [Bug c/102285] New: New flag -ftrivial-auto-var-init=zero causes many crashes in the testsuite dcb314 at hotmail dot com
2021-09-10 22:11 ` [Bug middle-end/102285] " qinzhao at gcc dot gnu.org
2021-09-10 22:28 ` qinzhao at gcc dot gnu.org
2021-09-10 22:34 ` pinskia at gcc dot gnu.org
2021-09-10 23:10 ` qing.zhao at oracle dot com
2021-09-12 3:33 ` qinzhao at gcc dot gnu.org
2021-09-12 8:06 ` dcb314 at hotmail dot com
2021-09-13 10:25 ` rguenth at gcc dot gnu.org
2021-09-13 17:30 ` qinzhao at gcc dot gnu.org
2021-09-29 22:44 ` [Bug middle-end/102285] New flag -ftrivial-auto-var-init=zero causes crash in pr82421.c qinzhao at gcc dot gnu.org
2021-09-30 19:30 ` qinzhao at gcc dot gnu.org
2021-09-30 20:22 ` qinzhao at gcc dot gnu.org
2021-09-30 20:53 ` dcb314 at hotmail dot com
2021-09-30 22:09 ` qinzhao at gcc dot gnu.org
2021-10-01 6:51 ` rguenth at gcc dot gnu.org
2021-10-01 9:45 ` egallager at gcc dot gnu.org [this message]
2021-10-01 16:16 ` qinzhao at gcc dot gnu.org
2021-10-01 16:43 ` qing.zhao at oracle dot com
2021-10-01 20:09 ` qinzhao at gcc dot gnu.org
2021-10-01 20:23 ` qinzhao at gcc dot gnu.org
2021-10-04 6:27 ` rguenther at suse dot de
2021-10-04 6:29 ` rguenther at suse dot de
2021-10-04 9:10 ` rguenth at gcc dot gnu.org
2021-10-04 9:30 ` rguenth at gcc dot gnu.org
2021-10-04 11:53 ` rguenth at gcc dot gnu.org
2021-10-04 14:54 ` rguenth at gcc dot gnu.org
2021-10-04 17:16 ` qinzhao at gcc dot gnu.org
2021-10-04 20:34 ` qinzhao at gcc dot gnu.org
2021-10-04 20:59 ` qinzhao at gcc dot gnu.org
2021-10-04 21:44 ` qinzhao at gcc dot gnu.org
2021-10-05 8:36 ` cvs-commit at gcc dot gnu.org
2021-10-05 8:47 ` rguenth at gcc dot gnu.org
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