From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 75007386103E; Sat, 13 Feb 2021 07:59:22 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 75007386103E From: "asolokha at gmx dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/99085] New: [11 Regression] ICE: verify_flow_info failed (error: multiple hot/cold transitions found) Date: Sat, 13 Feb 2021 07:59:21 +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: 11.0 X-Bugzilla-Keywords: ice-on-valid-code X-Bugzilla-Severity: normal X-Bugzilla-Who: asolokha at gmx 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 keywords bug_severity priority component assigned_to reporter 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 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: Sat, 13 Feb 2021 07:59:22 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99085 Bug ID: 99085 Summary: [11 Regression] ICE: verify_flow_info failed (error: multiple hot/cold transitions found) Product: gcc Version: 11.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: rtl-optimization Assignee: unassigned at gcc dot gnu.org Reporter: asolokha at gmx dot com Target Milestone: --- Target: x86_64-unknown-linux-gnu gcc-11.0.0-alpha20210207 snapshot (g:3d912941f29c27b2ac7c79b9e7cb2f1150e757= 58) ICEs when compiling the following testcase, reduced from gcc/testsuite/c-c++-common/torture/builtin-clear-padding-4.c, w/ -O2 -fgraphite-identity -fsel-sched-pipelining -fselective-scheduling2: void foo (int m, int n, int o, int i) { long double a2[m]; int c2[n][o]; int j, k; while (i < m) a2[i++] =3D 13.132L; for (j =3D 0; j < n; j++) for (k =3D 0; k < o; k++) c2[j][k] =3D 1; __builtin_abort (); } % x86_64-unknown-linux-gnu-gcc-11.0.0 -O2 -fgraphite-identity -fsel-sched-pipelining -fselective-scheduling2 -c euiuvzbp.c euiuvzbp.c: In function 'foo': euiuvzbp.c:16:1: error: multiple hot/cold transitions found (bb 15) 16 | } | ^ euiuvzbp.c:16:1: error: multiple hot/cold transitions found (bb 11) during RTL pass: stack euiuvzbp.c:16:1: internal compiler error: verify_flow_info failed 0x965f92 verify_flow_info() =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210207/work/gcc-11-20210207/gc= c/cfghooks.c:269 0x97e2f9 checking_verify_flow_info =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210207/work/gcc-11-20210207/gc= c/cfghooks.h:212 0x97e2f9 commit_edge_insertions() =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210207/work/gcc-11-20210207/gc= c/cfgrtl.c:2115 0xd71ff0 convert_regs =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210207/work/gcc-11-20210207/gc= c/reg-stack.c:3270 0xd71ff0 reg_to_stack =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210207/work/gcc-11-20210207/gc= c/reg-stack.c:3374 0xd71ff0 rest_of_handle_stack_regs =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210207/work/gcc-11-20210207/gc= c/reg-stack.c:3429 0xd71ff0 execute =20=20=20=20=20=20=20 /var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210207/work/gcc-11-20210207/gc= c/reg-stack.c:3461=