From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id A98EB385840E; Thu, 11 Nov 2021 16:48:55 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A98EB385840E From: "dcb314 at hotmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/103194] New: ice in optimize_atomic_bit_test_and, at tree-ssa-ccp.c:3626 Date: Thu, 11 Nov 2021 16:48:55 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Version: 12.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: dcb314 at hotmail dot com 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: Thu, 11 Nov 2021 16:48:55 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103194 Bug ID: 103194 Summary: ice in optimize_atomic_bit_test_and, at tree-ssa-ccp.c:3626 Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: dcb314 at hotmail dot com Target Milestone: --- For this C code: long pscc_a_2_3; int pscc_a_1_4; void pscc() { pscc_a_1_4 =3D __sync_fetch_and_and(&pscc_a_2_3, 1); } compiled by recent gcc trunk, does this: $ /home/dcb/gcc/results/bin/gcc -c -O1 bug771.c during GIMPLE pass: fab bug771.c: In function =E2=80=98pscc=E2=80=99: bug771.c:3:6: internal compiler error: in optimize_atomic_bit_test_and, at tree-ssa-ccp.c:3626 3 | void pscc() | ^~~~ 0xee6020 optimize_atomic_bit_test_and(gimple_stmt_iterator*, internal_fn, b= ool, bool) ../../trunk.git/gcc/tree-ssa-ccp.c:3626 0xee389a (anonymous namespace)::pass_fold_builtins::execute(function*) ../../trunk.git/gcc/tree-ssa-ccp.c:0 The bug first seems to occur sometime between git hash f2572a398d21fd52 and a97fdde627e64202,a distance of some 60 commits. In that range, commit fb161782545224f55ba26ba663889c5e6e9a04d1 looks a likely candidate.=