From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id DF12A3858418; Wed, 13 Jul 2022 07:25:25 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org DF12A3858418 From: "zhendong.su at inf dot ethz.ch" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/106278] New: ICE on valid code at -Os and above on x86_64-linux-gnu: in ix86_output_ssemov, at config/i386/i386.cc:5555 Date: Wed, 13 Jul 2022 07:25:25 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: unknown X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: zhendong.su at inf dot ethz.ch X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: 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: Wed, 13 Jul 2022 07:25:26 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106278 Bug ID: 106278 Summary: ICE on valid code at -Os and above on x86_64-linux-gnu: in ix86_output_ssemov, at config/i386/i386.cc:5555 Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: zhendong.su at inf dot ethz.ch Target Milestone: --- It appears to be a recent regression. [552] % gcctk -v Using built-in specs. COLLECT_GCC=3Dgcctk COLLECT_LTO_WRAPPER=3D/local/suz-local/software/local/gcc-trunk/libexec/gcc= /x86_64-pc-linux-gnu/13.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-trunk/configure --disable-bootstrap --prefix=3D/local/suz-local/software/local/gcc-trunk --enable-sanitizers --enable-languages=3Dc,c++ --disable-werror --enable-multilib --with-system= -zlib Thread model: posix Supported LTO compression algorithms: zlib gcc version 13.0.0 20220713 (experimental) [master r13-1652-g43997608a08] (= GCC) [553] % [553] % gcctk -O1 small.c; ./a.out [554] % [554] % gcctk -Os small.c during RTL pass: final small.c: In function =E2=80=98main=E2=80=99: small.c:20:1: internal compiler error: in ix86_output_ssemov, at config/i386/i386.cc:5555 20 | } | ^ 0x7ba8c7 ix86_output_ssemov(rtx_insn*, rtx_def**) ../../gcc-trunk/gcc/config/i386/i386.cc:5555 0xb2ce53 final_scan_insn_1 ../../gcc-trunk/gcc/final.cc:2826 0xb2d35b final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*) ../../gcc-trunk/gcc/final.cc:2939 0xb2d43c final_1 ../../gcc-trunk/gcc/final.cc:1996 0xb2e034 rest_of_handle_final ../../gcc-trunk/gcc/final.cc:4284 0xb2e034 execute ../../gcc-trunk/gcc/final.cc:4364 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See for instructions. [555] % [555] % cat small.c void __assert_fail(); struct a { int b; int c; int d; int : 2; }; int e, f; struct a g, i; const struct a h; int main() { struct a j; g =3D h; if (e) __assert_fail(); if (f) j =3D h; i =3D j; return 0; }=