From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 9E5723858403; Sun, 29 Aug 2021 16:12:03 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9E5723858403 From: "dcb314 at hotmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/102118] New: ice in merge, at ipa-modref-tree.h:203 Date: Sun, 29 Aug 2021 16:12:03 +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: Sun, 29 Aug 2021 16:12:03 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102118 Bug ID: 102118 Summary: ice in merge, at ipa-modref-tree.h:203 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: typedef struct { int large_page_addr; long n_used_entries } CPUTLBDesc; typedef struct { long mask } CPUTLBDescFast; typedef struct { CPUTLBDesc d[8]; CPUTLBDescFast f[] } CPUTLB; typedef int RISCVCPU; CPUTLB *tlb_flush_page_bits_locked___trans_tmp_8, *tlb_flush_page_bits_locked___trans_tmp_6, *tlb_flush_page_bits_locked___trans_tmp_4; void tlb_flush_page_bits_locked(int *env, int midx) { { int *__trans_tmp_5 =3D env; { RISCVCPU *arch_cpu =3D __trans_tmp_5; tlb_flush_page_bits_locked___trans_tmp_4 =3D arch_cpu; } } CPUTLBDesc *d =3D &tlb_flush_page_bits_locked___trans_tmp_4->d[midx]; { int *__trans_tmp_7 =3D env; { RISCVCPU *arch_cpu =3D __trans_tmp_7; tlb_flush_page_bits_locked___trans_tmp_6 =3D arch_cpu; } } if (tlb_flush_page_bits_locked___trans_tmp_6->f[midx].mask) if (d->large_page_addr) { int *__trans_tmp_3 =3D env; { { RISCVCPU *arch_cpu =3D __trans_tmp_3; tlb_flush_page_bits_locked___trans_tmp_8 =3D arch_cpu; } tlb_flush_page_bits_locked___trans_tmp_8->d[midx].n_used_entries--; } } } compiled by recent gcc trunk and compiler flag -O1, does this: during GIMPLE pass: modref bug752.c: In function =E2=80=98tlb_flush_page_bits_locked=E2=80=99: bug752.c:43:1: internal compiler error: in merge, at ipa-modref-tree.h:203 43 | } | ^ 0xae7448 modref_access_node::merge(modref_access_node const&, bool) ../../trunk.git/gcc/ipa-modref-tree.h:203 The code was fine at git hash 3ac6b5cff1eca4e1 and broken at hash e28ac73af20028f8=