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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/109585] [10/11/12/13/14 regression] Carla/sord miscompiled with -O2 on ARM64 with flexible array member Date: Mon, 24 Apr 2023 08:46:49 +0000 [thread overview] Message-ID: <bug-109585-4-EqrfzEqJ4O@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-109585-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109585 --- Comment #19 from Alexander Monakov <amonakov at gcc dot gnu.org> --- Manually minimized testcase for investigation, miscompiled at -O2: struct P { long v; struct P *n; }; struct F { long x; struct P fam[]; }; int f(struct F *f, int i) { struct P *p = f->fam; asm("" : "+r"(f): "r"(p)); p->v = 0; p->n = 0; return f->fam->n != 0; } Trunk emits: f: lea rdx, [rdi+8] mov rax, rdi mov QWORD PTR [rdi+8], 0 cmp QWORD PTR [rax+16], 0 mov QWORD PTR [rdi+16], 0 setne al movzx eax, al ret
next prev parent reply other threads:[~2023-04-24 8:46 UTC|newest] Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-04-21 10:39 [Bug c/109585] New: Carla/sord miscompiled with -O2 on ARM64 (inlining issue) hector at marcansoft dot com 2023-04-21 10:40 ` [Bug c/109585] " hector at marcansoft dot com 2023-04-21 10:52 ` rguenth at gcc dot gnu.org 2023-04-21 11:36 ` [Bug target/109585] " hector at marcansoft dot com 2023-04-21 11:37 ` hector at marcansoft dot com 2023-04-21 16:36 ` hector at marcansoft dot com 2023-04-21 16:38 ` hector at marcansoft dot com 2023-04-21 16:43 ` pinskia at gcc dot gnu.org 2023-04-21 16:50 ` [Bug middle-end/109585] " pinskia at gcc dot gnu.org 2023-04-21 16:55 ` hector at marcansoft dot com 2023-04-21 17:05 ` pinskia at gcc dot gnu.org 2023-04-21 17:08 ` hector at marcansoft dot com 2023-04-21 17:16 ` [Bug middle-end/109585] Carla/sord miscompiled with -O2 on ARM64 with flexible array member pinskia at gcc dot gnu.org 2023-04-22 21:48 ` [Bug rtl-optimization/109585] " amonakov at gcc dot gnu.org 2023-04-23 7:06 ` sjames at gcc dot gnu.org 2023-04-23 7:08 ` hector at marcansoft dot com 2023-04-23 7:50 ` xry111 at gcc dot gnu.org 2023-04-23 7:55 ` [Bug rtl-optimization/109585] [10/11/12/13/14 regression] " xry111 at gcc dot gnu.org 2023-04-24 6:39 ` rguenth at gcc dot gnu.org 2023-04-24 6:40 ` rguenth at gcc dot gnu.org 2023-04-24 8:46 ` amonakov at gcc dot gnu.org [this message] 2023-04-24 9:04 ` jakub at gcc dot gnu.org 2023-04-24 9:54 ` rguenth at gcc dot gnu.org 2023-04-24 11:35 ` rguenth at gcc dot gnu.org 2023-04-25 12:24 ` cvs-commit at gcc dot gnu.org 2023-04-25 12:25 ` [Bug rtl-optimization/109585] [10/11/12/13 " rguenth at gcc dot gnu.org 2023-04-26 9:33 ` cvs-commit at gcc dot gnu.org 2023-04-26 10:41 ` cvs-commit at gcc dot gnu.org 2023-05-02 12:04 ` [Bug rtl-optimization/109585] [10/11 " cvs-commit at gcc dot gnu.org 2023-07-07 10:08 ` [Bug rtl-optimization/109585] [10 " rguenth at gcc dot gnu.org
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