From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 2D903388A406; Thu, 6 May 2021 10:33:11 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 2D903388A406 From: "dcb314 at hotmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/100445] New: ice during RTL pass: vregs Date: Thu, 06 May 2021 10:33:11 +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: 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, 06 May 2021 10:33:11 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100445 Bug ID: 100445 Summary: ice during RTL pass: vregs Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: dcb314 at hotmail dot com Target Milestone: --- For this C code: int kgd_get_dense_grid_point_double_mesh_mesh_i; int kgd_get_dense_grid_point_double_mesh_mesh_address[3]; kgd_get_dense_grid_point_double_mesh_mesh() { for (; kgd_get_dense_grid_point_double_mesh_mesh_i; kgd_get_dense_grid_point_double_mesh_mesh_i++) { kgd_get_dense_grid_point_double_mesh_mesh_address [kgd_get_dense_grid_point_double_mesh_mesh_i] =3D (kgd_get_dense_grid_point_double_mesh_mesh_i - 1) / 2; } =20 get_grid_point_single_mesh(kgd_get_dense_grid_point_double_mesh_mesh_addres= s); } compiled like this: $ /home/dcb/gcc/results/bin/gcc -c -w -O3 -march=3Dbdver2 bug716.c 2>&1 | m= ore bug716.c: In function =E2=80=98kgd_get_dense_grid_point_double_mesh_mesh=E2= =80=99: bug716.c:11:1: error: unrecognizable insn: 11 | } | ^ (insn 22 21 23 5 (set (reg:V2SI 95 [ vect_patt_5.16 ]) (if_then_else:V2SI (reg:V2SI 105) (reg:V2SI 93 [ _40 ]) (reg:V2SI 94 [ vect__1.14 ]))) -1 (nil)) during RTL pass: vregs bug716.c:11:1: internal compiler error: in extract_insn, at recog.c:2770 The bug seems to occur sometime between git hash 61d48b1e2b5bae1e and e1fcf14f33e4f371.=20 My best guess, from a bit bisect, is that Uros's commit with hash f3661f2d63fbc5fd30c24d22137691e16b0a0a17 is the culprit.=