From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id AEE0D3858004; Mon, 14 Dec 2020 08:16:42 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org AEE0D3858004 From: "acoplan at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/98268] New: ICE: verify_gimple failed with LTO and SVE Date: Mon, 14 Dec 2020 08:16:42 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 11.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: acoplan 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 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: Mon, 14 Dec 2020 08:16:43 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98268 Bug ID: 98268 Summary: ICE: verify_gimple failed with LTO and SVE Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: acoplan at gcc dot gnu.org Target Milestone: --- The following fails on the head of the GCC 10 branch (reproduced at g:907525c3063e6ec5cf02790a5d5a37053c731401 with both an aarch64-elf cross a= nd natively on aarch64-linux-gnu): $ cat a.c short d, e; void f(char, long*); int main() { long x; f(-114, &x); return d =3D=3D e; } $ cat b.c extern short d[], e[]; void f(char a, long *b) { for (int c =3D 0; c < a - 12; c++) { d[c] =3D b[c]; e[c] =3D 0; } } $ aarch64-elf-gcc a.c b.c -flto -O1 -march=3Darmv8.2-a+sve -ftree-vectorize -msve-vector-bits=3D128 a.c: In function 'main': a.c:3:5: error: constant not recomputed when 'ADDR_EXPR' changed 3 | int main() { | ^ _59 =3D &MEM [(short int *)&d + 256B]; a.c:3:5: error: constant not recomputed when 'ADDR_EXPR' changed _64 =3D &MEM [(short int *)&e + 256B]; during GIMPLE pass: dom a.c:3:5: internal compiler error: verify_gimple failed 0xcbba04 verify_gimple_in_cfg(function*, bool) /home/alecop01/toolchain/src/gcc/gcc/tree-cfg.c:5492 0xb6dca8 execute_function_todo /home/alecop01/toolchain/src/gcc/gcc/passes.c:1985 0xb6dea2 do_per_function /home/alecop01/toolchain/src/gcc/gcc/passes.c:1640 0xb6e03d execute_todo /home/alecop01/toolchain/src/gcc/gcc/passes.c:2039 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See for instructions. lto-wrapper: fatal error: aarch64-elf-gcc returned 1 exit status compilation terminated. /home/alecop01/toolchain/build-aarch64-elf/install/lib/gcc/aarch64-elf/10.2= .1/../../../../aarch64-elf/bin/ld: error: lto-wrapper failed collect2: error: ld returned 1 exit status I haven't been able to reproduce the issue on trunk, however.=