From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id C84333858401; Tue, 4 Oct 2022 09:14:42 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org C84333858401 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1664874882; bh=dd2PZ2vrgHAg0guThlG7hQdBwIlSVSzeKtxa+q4ZsKA=; h=From:To:Subject:Date:From; b=K+EEVbCfqcFtPrWqtMdXf+7FLmjKanLz5l/0Pnes3SB4sbMM4alsi+5JC8Zx9tzU2 Jqe9ykRMgxxpYb9P5xPu6kx4tyvPuOJvw4305NIeQ2RqSXC5W6zxY6XxmjprehKpCT GtNQwRf2cnMQqQ0iiHccy+9oE73J04DaVc45Vno4= From: "burnus at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/107149] New: [13 Regression] ICE during RTL pass: dse2 - internal compiler error: in require, at machmode.h:297 Date: Tue, 04 Oct 2022 09:14:38 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 13.0 X-Bugzilla-Keywords: build, ice-on-valid-code X-Bugzilla-Severity: normal X-Bugzilla-Who: burnus at gcc dot gnu.org 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 keywords bug_severity priority component assigned_to reporter cc target_milestone cf_gcctarget 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=3D107149 Bug ID: 107149 Summary: [13 Regression] ICE during RTL pass: dse2 - internal compiler error: in require, at machmode.h:297 Product: gcc Version: 13.0 Status: UNCONFIRMED Keywords: build, ice-on-valid-code Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: burnus at gcc dot gnu.org CC: ams at gcc dot gnu.org Target Milestone: --- Target: amdgcn-amdhsa Building current GCC mainline for AMDGCN, it fails when building libgfortran for several files with: during RTL pass: dse2 src/gcc-mainline/libgfortran/generated/maxloc1_16_i1.c: In function 'mmaxloc1_16_i1': src/gcc-mainline/libgfortran/generated/maxloc1_16_i1.c:460:1: internal comp= iler error: in require, at machmode.h:297 460 | } | ^ 0x672c50 opt_mode::require() const src/gcc-mainline/gcc/machmode.h:297 0x67474a opt_mode::require() const src/gcc-mainline/gcc/cselib.cc:1567 0x67474a void mode_iterator::get_known_wider(scalar_int_mo= de*) src/gcc-mainline/gcc/machmode.h:1124 0x67474a new_cselib_val src/gcc-mainline/gcc/cselib.cc:1579 0xabbc6b cselib_lookup_1 src/gcc-mainline/gcc/cselib.cc:2315 0xabbf4e cselib_lookup(rtx_def*, machine_mode, int, machine_mode) src/gcc-mainline/gcc/cselib.cc:2431 0xabeaf0 cselib_record_sets src/gcc-mainline/gcc/cselib.cc:2932 0xabfb59 cselib_process_insn(rtx_insn*) src/gcc-mainline/gcc/cselib.cc:3159 0x178d554 dse_step1 src/gcc-mainline/gcc/dse.cc:2771 0x178d554 rest_of_handle_dse src/gcc-mainline/gcc/dse.cc:3687 0x178d554 execute src/gcc-mainline/gcc/dse.cc:3760 Side note: I did spot in the log file the follow warning, which looks as if= it could be related: src/gcc-mainline/gcc/expmed.cc: In function 'rtx_def* extract_bit_field_1(r= tx, poly_uint64, poly_uint64, int, rtx, machine_mode, machine_mode, bool, bool, rtx_def**)': src/gcc-mainline/gcc/expmed.cc:1838:45: warning: '*(unsigned int*)((char*)&imode + offsetof(scalar_int_mode, scalar_int_mode::m_mode))' = may be used uninitialized in this function [-Wmaybe-uninitialized] 1838 | rtx sub =3D extract_bit_field_as_subreg (mode1, op0, imode, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~ 1839 | bitsize, bitnum); | ~~~~~~~~~~~~~~~~=