From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 485FA3858C31; Sat, 24 Jun 2023 12:52:26 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 485FA3858C31 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1687611146; bh=h/0McA4ltW+kSQ+YhEHfHVUxSh1igumQrAivYeJL2/0=; h=From:To:Subject:Date:From; b=UXrsOb04yvLix/v2c6+Fnvwx7HlfNmbct3wR5glsrtwqT9oWUJl/pd9j1Eh/d5k2F KI+qSaBUwh91hrHA6PTeRNV5Xc3OZTtZ9STTdBqGyBm3fsPTY+bmsvFuFou09dD9rx LarT0TT7zN3XJx7O6y8LYRNDK/Z4CipJga6rcsZw= From: "zhendong.su at inf dot ethz.ch" To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/110390] New: ICE on valid code on x86_64-linux-gnu with sel-scheduling: in av_set_could_be_blocked_by_bookkeeping_p, at sel-sched.cc:3609 Date: Sat, 24 Jun 2023 12:52:25 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: rtl-optimization 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 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110390 Bug ID: 110390 Summary: ICE on valid code on x86_64-linux-gnu with sel-scheduling: in av_set_could_be_blocked_by_bookkeeping_p, at sel-sched.cc:3609 Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: rtl-optimization Assignee: unassigned at gcc dot gnu.org Reporter: zhendong.su at inf dot ethz.ch Target Milestone: --- It appears to be a regression from 12.*, and affects 13.* and later. Compiler Explorer: https://godbolt.org/z/Gd15nnhrv [571] % gcctk -v Using built-in specs. COLLECT_GCC=3Dgcctk COLLECT_LTO_WRAPPER=3D/local/home/suz/suz-local/software/local/gcc-trunk/bi= n/../libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-trunk/configure --disable-bootstrap --enable-checking=3Dyes --prefix=3D/local/suz-local/software/local/gcc-trunk --enable-sanitizers --enable-languages=3Dc,c++ --disable-werror --disable-multilib Thread model: posix Supported LTO compression algorithms: zlib gcc version 14.0.0 20230623 (experimental) [master r14-924-gd709841ae0f] (G= CC) [572] % [572] % gcctk -O2 -fno-tree-dce -fsel-sched-pipelining -fno-dce -fno-tree-t= er -fno-gcse -fno-ssa-phiopt -fno-tree-dse -fno-if-conversion -fno-thread-jumps -fselective-scheduling2 -fno-guess-branch-probability small.c during RTL pass: sched2 small.c: In function =E2=80=98main=E2=80=99: small.c:23:1: internal compiler error: in av_set_could_be_blocked_by_bookkeeping_p, at sel-sched.cc:3609 23 | } | ^ 0x7d6356 av_set_could_be_blocked_by_bookkeeping_p ../../gcc-trunk/gcc/sel-sched.cc:3609 0x7d6356 code_motion_process_successors ../../gcc-trunk/gcc/sel-sched.cc:6386 0x7d6356 code_motion_path_driver ../../gcc-trunk/gcc/sel-sched.cc:6608 0xf857a9 code_motion_process_successors ../../gcc-trunk/gcc/sel-sched.cc:6342 0xf857a9 code_motion_path_driver ../../gcc-trunk/gcc/sel-sched.cc:6608 0xf857a9 code_motion_process_successors ../../gcc-trunk/gcc/sel-sched.cc:6342 0xf857a9 code_motion_path_driver ../../gcc-trunk/gcc/sel-sched.cc:6608 0xf86858 find_used_regs ../../gcc-trunk/gcc/sel-sched.cc:3272 0xf86858 collect_unavailable_regs_from_bnds ../../gcc-trunk/gcc/sel-sched.cc:1586 0xf86858 find_best_reg_for_expr ../../gcc-trunk/gcc/sel-sched.cc:1649 0xf893ac fill_vec_av_set ../../gcc-trunk/gcc/sel-sched.cc:3784 0xf893ac fill_ready_list ../../gcc-trunk/gcc/sel-sched.cc:4014 0xf893ac find_best_expr ../../gcc-trunk/gcc/sel-sched.cc:4374 0xf893ac fill_insns ../../gcc-trunk/gcc/sel-sched.cc:5535 0xf893ac schedule_on_fences ../../gcc-trunk/gcc/sel-sched.cc:7353 0xf893ac sel_sched_region_2 ../../gcc-trunk/gcc/sel-sched.cc:7491 0xf8a568 sel_sched_region_1 ../../gcc-trunk/gcc/sel-sched.cc:7533 0xf8bb86 sel_sched_region(int) ../../gcc-trunk/gcc/sel-sched.cc:7634 0xf8bb86 sel_sched_region(int) ../../gcc-trunk/gcc/sel-sched.cc:7619 0xf8bd29 run_selective_scheduling() ../../gcc-trunk/gcc/sel-sched.cc:7720 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. [573] % [573] % cat small.c int a, b, c, d, e, f; extern void k(); int main() { int h =3D 6, i; j: if (b) h =3D 0; if (c) { k(); goto l; } int m =3D i =3D 0; for (; i < 2; i++) ; long n =3D a; l: d =3D ~m || n ^ (a & f); m =3D f; f =3D ~(n && h | e) && a; if (h && a) goto j; return 0; }=