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From: "qinzhao 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: Thu, 30 Sep 2021 20:22:03 +0000 [thread overview] Message-ID: <bug-102285-4-jWFKLyZDZ1@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 --- Comment #10 from qinzhao at gcc dot gnu.org --- commented the following transformation in tree-ssa-ccp.c: 2733 #if 0 2734 /* The heuristic of fold_builtin_alloca_with_align differs before and 2735 after inlining, so we don't require the arg to be changed into a 2736 constant for folding, but just to be constant. */ 2737 if (gimple_call_builtin_p (stmt, BUILT_IN_ALLOCA_WITH_ALIGN) 2738 || gimple_call_builtin_p (stmt, BUILT_IN_ALLOCA_WITH_ALIGN_AND_MAX)) 2739 { 2740 tree new_rhs = fold_builtin_alloca_with_align (stmt); 2741 if (new_rhs) 2742 { 2743 gimplify_and_update_call_from_tree (gsi, new_rhs); 2744 tree var = TREE_OPERAND (TREE_OPERAND (new_rhs, 0),0); 2745 insert_clobbers_for_var (*gsi, var); 2746 return true; 2747 } 2748 } 2749 #endif cures the ICE. "fb.3" is a new temp variable that is created inside "fold_builtin_alloca_with_align".
next prev parent reply other threads:[~2021-09-30 20:22 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 [this message] 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 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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