From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 9988B3858006; Sat, 9 Oct 2021 05:51:18 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9988B3858006 From: "guojiufu at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/102087] [12 Regression] ICE on valid code at -O3 on x86_64-linux-gnu: in determine_exit_conditions, at tree-ssa-loop-manip.c:1049 since r12-3136-g3673dcf6d6baeb67 Date: Sat, 09 Oct 2021 05:51:18 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: ice-on-valid-code X-Bugzilla-Severity: normal X-Bugzilla-Who: guojiufu at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 12.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 09 Oct 2021 05:51:18 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102087 --- Comment #16 from Jiu Fu Guo --- Thanks David, Richard, ~/gcc/install/gcc-mainline-base-debug/bin/gcc -v Using built-in specs. COLLECT_GCC=3D/home/guojiufu/gcc/install/gcc-mainline-base-debug/bin/gcc COLLECT_LTO_WRAPPER=3D/home/guojiufu/gcc/install/gcc-mainline-base-debug/li= bexec/gcc/x86_64-pc-linux-gnu/12.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /home/guojiufu/gcc/gcc-mainline-base/configure --prefix=3D/home/guojiufu/gcc/install/gcc-mainline-base-debug --disable-boo= tstrap --disable-multilib --disable-werror --with-pkgversion=3D29c92857039d0a10 --enable-checking=3Ddf,extra,fold,rtl,yes --enable-languages=3Dc,c++,fortra= n : (reconfigured) /home/guojiufu/gcc/gcc-mainline-base/configure --prefix=3D/home/guojiufu/gcc/install/gcc-mainline-base-debug --disable-boo= tstrap --disable-multilib --disable-werror --with-pkgversion=3D29c92857039d0a10 --enable-checking=3Ddf,extra,fold,rtl,yes --enable-languages=3Dc,c++,fortra= n,lto --no-create --no-recursion Thread model: posix Supported LTO compression algorithms: zlib gcc version 12.0.0 20210922 (experimental) (29c92857039d0a10)=20 ~/gcc/install/gcc-mainline-base-debug/bin/gcc -c -O3 -w ~/temp/t.c -march=3Dopteron ~/gcc/install/gcc-mainline-base-debug/bin/gcc -c -O3 -w -march=3Dbdver2 ~/temp/t.c cat ~/temp/t.c char **Gif_ClipImage_gfi_0; int Gif_ClipImage_y, Gif_ClipImage_shift; void Gif_ClipImage(void) { for (; Gif_ClipImage_y >=3D Gif_ClipImage_shift; Gif_ClipImage_y++) Gif_ClipImage_gfi_0[Gif_ClipImage_shift] =3D Gif_ClipImage_gfi_0[Gif_ClipImage_y]; } I build both 3087d1b0a2c and the latest trunk, the case could pass.=